Nato Frequencies

7/27/2019 Nato Frequencies

1/106

http://ukspec.tripod.com/spectrum.html#b230

Close Ad

The Radio Spectrum - UKAllocations

Latest revision : 12.feb.2012 (tidied up, many updates)

A guide from 0 Hz to 30 EHz (DC to Gamma rays). The main bands, all frequencies

in MHz unless otherwise stated. With grateful thanks to OFCOM (previously the UK

Radiocomms Agency) for so openly publishling all you need to know... even ifactually tuning in to anything other than Broadcasting/CB/Ham is not allowed,

that's the rules, folks. Which is why there are no details of Private systems here...

this page details frequency ranges and channel schemes that couldbe used for

various services, but not actual, specific instances - unless the details are so

commonly available elsewhere that they can't be considered secret. OFCOM

themselves are now making licence details public, so the PMR bands usage is now

public domain.

As recommended by Short Wave Magazine (UK) - "Excellent...well worth a look"
http://ukspec.tripod.com/spectrum.html#b230http://ukspec.tripod.com/spectrum.htmlhttp://ukspec.tripod.com/spectrum.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra169.htmhttp://adtrack.ministerial5.com/clicknew/?a=637394http://adtrack.ministerial5.com/clicknew/?a=637394http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra169.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htmhttp://ukspec.tripod.com/spectrum.htmlhttp://ukspec.tripod.com/spectrum.html#b230


2/106

DISCLAIMER: This page is provided for interest/curiosity only. Private services

should remain that way, if you listen without a licence (you can't get them) to

anything other than licencedBroadcasting or Amateur Radio (& CB) you are

breaking the law. Even having a private frequency stored in a receiver's memory

channel is considered to be proof of intercepting messages that are not intended for

you. Penalties include heavy fines and/or imprisonment.

You have been warned.

Under Section 5(b) of the Wireless Telegraphy Act 1949 it is an offence touse radio equipment with intent to obtain information as to the contents,

sender or addressee of any messages, whether or not the information ispassed on, which the user has not been authorised to receive.

Eavesdropping is tempting because wide-area mobile comms are obviouslydesigned to cover a large area and so it really is quite easy to receive at least basestations and repeaters. If you say they deserve to be heard if they don't encrypt

their voice traffic in any way - I would say you need to consider the harsh economic

reality of replacing huge numbers of radios, but it will happen. You may think thatthe USA has things right, as they may listen to their public services (but not

cellphones) but you can't argue with our law unless you can get it changed, andunprocessed bacon might fly. There may well be a large number of cases of the USpublic assisting their law officers after having heard about incidents on theirscanners, but I don't think that justifies the personal details of victims of crime

being known. If anything, maybe there should be a clear channel in each area thatthe public MAY listen to, where the police actually ask the public for theirassistance. Could be tricky from a legal liability angle though! Please don't tell meyou think you have a right to listen to the movements of covert investigations...

PLEASE COPY THIS WEBPAGE TO YOUR PC FOR

SAFEKEEPING, in case this website vanishes.(c) Me, 1997-2012! However... PLEASEFEEL FREE TOCOPY ONTO YOUR OWN WEB-SPACE AND MAKE ITAVAILABLE TO THE PUBLIC. (CONDITIONSPlease usethe .JPG background, KEEP THE FORMATTING THE

SAME, do not remove my comments, use a fixed widthfont so that it all lines up still, bolt in a replacementhits counter, and do not claim it's all your own work!

Thank you)

Click here for a white background "Windows-style" version
http://ukspec.tripod.com/specbw.htmlhttp://ukspec.tripod.com/specbw.htmlhttp://ukspec.tripod.com/specbw.html


3/106

HINT: There is a glossary at the end of this page to explain all the funnyacronyms!

So what's the point of this page? Personally, I've been fascinated by the magic of

radio all of my life, fiddling around with radios since primary school, and over the

years having read a fair bit about communication systems and the radio spectrum,

I've now got a lot of radio information rattling around in my head. I thought it

would be nice to share it with the world, via the web, to show what a crowded

resource the RF spectrum is; how every nook and cranny is allocated to some

service or other; how OFCOM has to balance the needs of various services when

they are asked for more spectrum. Also, with all that RF energy passing through

your body, don't you think you have a right to know exactly what sort of emissions

are zapping through you? (I'm not saying you have a right to know the contentof

the messages, only the nature of the delivery). Also, Amateurs should be aware of

the services that could be affected should their equipment not be up to the required

standard. Likewise to anyone foolish enough to consider operating an unlicencedpirate station - just don't - there really isn't any point is there? And lastly, because

published books are often out of date or plainly wrong in these matters.

This revision of the page may be the last major update you'llbe getting for a while. I'll keep things up to date if theychange, but I'm happy with the layout and not much is

changing these days. Unless new channel plans or allocations

come along, this is just about it. I'll keep things as accurateas I can, but it's now too much work to go checking all the

links. I've researched all the topics that interest me and I'vedone my best to share what I've found. If you want to knowmore, firstly read the entire OFCOM site, then learn to use the

major search engines effectively, and join some of the manyexpert mailing lists.

Errors and Omissions are most likely to appear above therange of most scanners (1.3GHz), as that is of little interest

to most of us, and it's mostly digital these days.Many thanks to those who have had the patience to keep

replacing the page each time I updated it. Thanks everyone, Ihope it's been worthwhile - "The Author"

I think it has been VERY worthwhile, I've learnt a lot fromthis. I'd like to thank The Author for all their hard work. It has

been a pleasure hosting the page. Thank you!! - RF-man
http://www.nap.edu/readingroom/books/evolution/1.htmlhttp://www.nap.edu/readingroom/books/evolution/1.html


4/106

So if you've ever wondered what's beyond the dial on your ordinary radio, this isthe page for you. Just be aware that you shouldn't tune in to anything private - ifsomeone is talking loudly in the street and you can easily overhear, you still don'tmorally have the right to listen do you? If the vast amount of broadcasts and ham

radio conversations aren't enough to amuse you (and the rest of what life ingeneral has to offer) then that's quite sad. If I ever have time to switch on my

receiver (to see what the propagation's like) the only bands I need to go to areamateur ones. And good music is much more satisfying. If you can find it.

In a decade or so there may not be all that much else to listen to anyway on

current scanners, as almost all radio users head towards digital systems, oftensecure ones too. Maybe the spectrum will one day consist of just one system formobile access to THE NET which provides for all possible communication needs - aload of buzzing noises wherever you tune, except for the long-established amateurbands. Then you scanner owners can relax, you won't be able to do anything illegalwith them if you try - unless you decide to throw them through someone's window!

A scanner is already useless except for listening to the hams, airband, marine and a

few businesses. Those who were only into the naughty stuff will have to adjust to aworld where shopwatch schemes and the occasional search and rescue mission

provide the only interest - or find another hobby. Those who are genuinelyinterested in radio will have no choice but to go down the amateur route.

I would say that if you have an interest in these matters, devote your energies nowto Amateur Radio PLEASE! We need more activity in the bands. Amateur radiocovers bands from Low Frequencies (with 2km wavelengths) to ultra-high micro-wave bands (wavelengths in millimetres) with modes ranging from good old-fashioned morse code (CW) to AM/FM speech (communications bandwidths) toadvanced narrowband speech (Single Side Band) to Television (slow scan like FAX

through to full motion/definition FMW broadcast quality) to digital/data modes like

RTTY and Packet. Transmissions can be direct, fixed and mobile (and MaritimeMobile), via satellite, bent through the troposphere, bounced off various layers ofcharged particles in the upper atmosphere, or even bounced off the moon (EME), or

shooting stars (MS)! And all for just 15 quid per year - bargain. Go on, prove youknow what you're talking about, get a callsign soon. Even if you don't ever useit... See the OFCOM web-page info, or the Radio Society for Good Buddies sitefor more details, or the UK Ham Radio FAQ. And the G7KPF Quick Links. Join andsupport the RSGB too, it's a good idea as they do tend to negotiate new bands forus.

Here then, is my quick tour of the spectrum of 2012, with links to other sites whereappropriate.

All information sourced from freely published books, magazines and web-sites(RA,ERO), without the need for a scanner, as part of an ongoing quest to figure outwhat lies beyond the broadcasting bands...

Bands (MHz)

LW MW HF 3-26 CB 26-28

Low VHF 29.7 to 47 Band I 47-68 Low Band 68-87.5 FM, Band II 87.5-108
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra190/ra190.htmhttp://www.rsgb.org/contents.htmhttp://www.r-clarke.org.uk/hamfaq1.htmhttp://www.users.zetnet.co.uk/kama/hamlinks.htmhttp://ukspec.tripod.com/spectrum.html#blwhttp://ukspec.tripod.com/spectrum.html#bmwhttp://ukspec.tripod.com/spectrum.html#b3http://ukspec.tripod.com/spectrum.html#b27http://ukspec.tripod.com/spectrum.html#b30http://ukspec.tripod.com/spectrum.html#b47http://ukspec.tripod.com/spectrum.html#b68http://ukspec.tripod.com/spectrum.html#b87http://ukspec.tripod.com/spectrum.html#b87http://ukspec.tripod.com/spectrum.html#b68http://ukspec.tripod.com/spectrum.html#b47http://ukspec.tripod.com/spectrum.html#b30http://ukspec.tripod.com/spectrum.html#b27http://ukspec.tripod.com/spectrum.html#b3http://ukspec.tripod.com/spectrum.html#bmwhttp://ukspec.tripod.com/spectrum.html#blwhttp://www.users.zetnet.co.uk/kama/hamlinks.htmhttp://www.r-clarke.org.uk/hamfaq1.htmhttp://www.rsgb.org/contents.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra190/ra190.htm


5/106

Air Band 108-137 Mid Band 137-165 Marine Band 156-163 High Band 165-174

Band III 174-230 NATO Band 230-400 UHF1 & 2 400-470 TV, Bands IV & V 470-854

GSM & mobile 854-960 Amateur 23cm 1.2 GHz Microwaves 1-300 GHz Ku TV Band 10.7-12.75 GHz Light

Services

Broadcasting - LW,MW,SW, 87.5-108, DAB, TV, you're invited to listen (there's

money in it, or a license fee to justify!).

Amateur & CB - HF, 50, 70, 144, 430 MHz etc. Can be good, can be dull - youdecide. You may listen. (The rules)

Aeronautical - "airband" - HF, 108-137 MHz. You may not listen, but it seems to betolerated.

Maritime - HF, 156-163 MHz. Probably tolerated, but no listening unless licensed,and on-board.

...thou shalt NOT listen...

Low Power / Short Range Devices - Cordless telephones / headphones /microphones, remote control etc.

PMSE - SAB/SAP - when TV/radio/film/programme makers use radio. Managed byJFMG (2012 frequencies):a) Radiomicrophones - carrying "programme audio" obviously,b) Talkback - on-site comms (simplex or continous duplex) or wide-area commsback to base,

c) Links - mobile "programme audio" back to base, or Fixed links between sites.Like the military and many low-power devices, they seem to crop up all over thespectrum! However, some of the assignments in shared bands (mainly BBC) are tocease in 2000, leaving mostly primary bands.

As Bands I, III, IV and V are designated BROADCASTING it seems logical thatbroadcasters may also use these bands for mics and comms either at UHF onlocally unused "in-band" channels, or (also for links) in the VHF bands that are nolonger used for broadcasting.Around 174MHz is very popular for mics, as well as other parts ofBand III thatcoincide with French TV carriers and so are not used for PBR.Note that JFMG also deal with Special Event short-term assignments for localcomms, e.g. Ascot.

PMR - channels are allocated in all bands to different categories such as :. National exclusive,
http://ukspec.tripod.com/spectrum.html#b108http://ukspec.tripod.com/spectrum.html#b137http://ukspec.tripod.com/spectrum.html#b156http://ukspec.tripod.com/spectrum.html#b165http://ukspec.tripod.com/spectrum.html#b174http://ukspec.tripod.com/spectrum.html#b230http://ukspec.tripod.com/spectrum.html#b400http://ukspec.tripod.com/spectrum.html#b470http://ukspec.tripod.com/spectrum.html#b854http://ukspec.tripod.com/spectrum.html#b23cmhttp://ukspec.tripod.com/spectrum.html#bmicrohttp://ukspec.tripod.com/spectrum.html#bkuhttp://ukspec.tripod.com/spectrum.html#blighthttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/br68r11/br68.htmhttp://www.jfmg.co.uk/pages/freq/freq.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra255.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra255.htmhttp://www.jfmg.co.uk/pages/freq/freq.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/br68r11/br68.htmhttp://ukspec.tripod.com/spectrum.html#blighthttp://ukspec.tripod.com/spectrum.html#bkuhttp://ukspec.tripod.com/spectrum.html#bmicrohttp://ukspec.tripod.com/spectrum.html#b23cmhttp://ukspec.tripod.com/spectrum.html#b854http://ukspec.tripod.com/spectrum.html#b470http://ukspec.tripod.com/spectrum.html#b400http://ukspec.tripod.com/spectrum.html#b230http://ukspec.tripod.com/spectrum.html#b174http://ukspec.tripod.com/spectrum.html#b165http://ukspec.tripod.com/spectrum.html#b156http://ukspec.tripod.com/spectrum.html#b137http://ukspec.tripod.com/spectrum.html#b108


6/106

. Wide Area Shared "G3" - taxis "T1", despatch "H4" etc. - 30kms range,

. ...& Medical (ambulance service - high band)

. CBS (follow the link for Common Base channels),

. On-site shared - dual "C2" or single "O5" - 3km range max., why not use

PMR446?!. Suppliers Light (was Short Term Hire) (up to 1 year), demo (28 days), "parking"

(3 months), Test&Dev,. specific uses i.e. Road Construction

. Simple UK Light (was 'UK General') "U3" - mobile only, anywhere in UK, 5W ERPmax - Shared channels : 5 in low-band, 2 in mid-band, 5 in high-band, 3 at UHF.(in 2002 the UHF channels changed and various conditions too. No time limit now,so it's a good LICENSED replacement for SRBR and 446, 20 quid a year)

Which explains why that "spare channel" can't be used for anything else in yourarea!Given that the number of users of PMR channels runs into tens of thousands ( 2003

report, 2000 report, and 1997 report) , it would be quite futile to attempt to listthem all - it amazes me that publications even try.Even worse, once a frequency/user tie-up makes it into print, no-one ever seems to

doubt its validity and it's often printed way after it ceased to be used!Fair enough to list national allocations, the general type of use for a channel - butto try and find EVERY assigment, EVERY taxi firm.... ho hum.

Military - various web pages will show that there is a world market for equipmentoperating in the bands such as HF, 30-87.5 (25kHz FM), 116-155 & 225-400(25kHz AM), 470-512 etc. Note that whilst the odd Combat Net here and there maybe "in the clear" any serious tactical use would be very hard to find. Frequencyhopping and scrambling are used - after all, would you want your country defendedby forces that could be easily monitored?

Operational use (like PMR) for base security, training, Mil. Police, MOULD etc.involves fixed frequencies, and various books show that Low VHF, Low Band, Mid

Band, 406.1-420 and UHF1 are heavily used for these purposes. There is currentlya general move from VHF to UHF, and the use of a TETRA system is beingconsidered. This type of radio traffic is still not to be listened to!

...thou shalt definitely NOT listen...(2009 update: and now everything is digital you can't anyway!)

Public Telecomms - paging, mobile telephone/data - the reason why scannermanufacturers HAD to include coverage of the 900MHz band (! there's nowt else upthere to listen to). Eavesdropping on analogue mobile calls is quite rightly frownedupon.

Home Office for the Emergency Services - previous versions of this document didnot mention these allocations, but as the bands are shown on OFCOM pages, and invarious books, some are now included for the sake of clarity. Only the BANDS areshown, not actual frequencies in use. Do NOT listen in!

Notes

NOTE 1: Boundaries - a "equals" symbol (=) is used here to clarify a known

boundary between two band sections, this usually means no transmissions on the

frequency itself, but that use of the band includes RF emissions up to that point.This could be a point between two normal channels, such as the 165.04375
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra355.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra347.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra208/ra208.htmhttp://ofcom.org.uk/static/businessradio/BusinessRadioSimpleUK.pdfhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr-rep03/land_mobile_report_03.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr-rep03/land_mobile_report_03.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr_rep00/landm00.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra266/ra266.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra266/ra266.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr_rep00/landm00.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr-rep03/land_mobile_report_03.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/document/lmr-rep03/land_mobile_report_03.htmhttp://ofcom.org.uk/static/businessradio/BusinessRadioSimpleUK.pdfhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra208/ra208.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra347.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra355.htm


7/106

boundary between the last mid-band channel 165.0375 and the first high band

channel 165.050, or even a "wasted" channel giving "guard band" separation

between two types of service.

As an example, Band II is bounded by 87.5 to 108, whereas I try wherever possible

to specify bands by the first and last channel centres, in this case 87.6 to 107.9 (in

the USA, VOR tests are allowed on 108.0 just to confuse matters, so long as no

interference is caused). (Some aero DME channels are tuned by selecting 108.0

even though there's no signal on 108!)

One exception is the international marine 156.0 boundary - used for channel 0

uniquely in the UK, which isn't at odds with the 154-156 use below I guess!

The RA/OFCOM usually specify bands as boundaries - hence I try here to show

actual usage.

NOTE 2: Dots after a frequency signifies the start of a range, whereas a single spotfrequency has no trailing dots - although this doesn't apply in the two-columnsection. Frequencies given relate to the center of the transmission (COFDM, FM,AM) (i.e. the unmodulated carrier with carrier-based systems such as FM/AM), or

the absent carrier for SSB.

NOTE 3: Scanner folk often use the terms Simplex and Duplex wrongly to describeSingle and Dual frequency systems. The term Simplex means taking turns totransmit, whether on one or more frequencies. The proper terms to use are S.F.S.

(Single Frequency Simplex) and D.F.S (Dual..). Duplex only applies on telephonestyle systems where one party can interupt the other. Even TT (Talk-Through;repeaters) is still simplex. I use the abbrev.s Single and Dual. Any time I specify"Split" generally implies D.F.S., and details are given as base freq.s, with the

change in frequency in +/- MHz needed to hear the mobile.Even "Duplex" doesn't neccessarily mean two frequencies, new digital systems canrapidly take turns on the same freq. by time-compressing the audio data-stream!

ASSUMING you have permission to listen...S.F.S. and TT (repeaters) are obviously very easy to monitor with just one memory(or in manual mode) and "scan delay" isn't a problem - the longer the delay thebetter, as many radio users seem to need a few seconds to think of a reply (TT

"over" pips are generally a waste of time, most dimwits wait for the squelchcrunch). This means conventional scanners are fine for monitoring amateur, CB,airband, ship-shore-ship, some PMR etc.Private D.F.S is more tricky, depending on whether the base transmits pips to let

other mobiles know the channel is busy. True D.F.S. with no "busy signal" justrequires two scan memories and no scan-delay, which not all scanners allow. With"busy-pips" you'll need to be just a little smarter to catch all the action, should you

have permission. Dare I suggest investing in a cheap-n-cheerful second receiver to

take care of just the strong base freq.s while using the better set/antenna for themobile side...These difficulties could be quite easily overcome if the manufacturers thought just ateensy bit harder about the operation of their receivers. By the time they DO getsuch advances implemented, everything will be digital anyway!

NOTES: FM deviation and bandwidth :Bandwidth = 2(PeakDeviation+HighestModulationFreq) ... this is Carson's Rule - arule of thumb, but very close. For 3kHz maximum speech frequency comms :

BW= 2(5+3) = 16kHz (for 5kHz dev)BW= 2(2.5+3) = 11kHz (for 2.5kHz dev)

"The -60 or -70dBc bandwidth is approximately twice the Carson bandwidth."


8/106

The modulation index is defined as the peak deviation divided by the highestmodulating frequncy. "This would be 5/3 for NBFM and 2.5/3 for the really narrowstuff. Modulation indexes under 1 don't really work that well, 5/3 is almost 2, andbroadcast FM uses 75/15 or 5. It depends on the type of Signal-to-Noise Ratio you

need." Note also that true FM uses pre-emphasis per octave from 300 to 3000Hz -which matches the effect of Phase Modulation.

deviation v. bandwidth (not accounting for frequency accuracy)

kHz kHz max band modspacing dev mod width index

6.25 1 2 6 0.5 narrowband experimental10 2 3 10 0.66 CB/10m/6m12.5 2.5 3 11 0.833 PMR/2m15 3 3 12 1 (USA)20 4 3 14 1.33 (some amateur)25 5 3 16 1.66 70cm/marine

WEFAX 9 4 26 2.25 137MHz etcWFM 75 15 180 5 Band II

"Analog FM doesn't perform as well in narrowband channels as it doesin 25kHzchannels. If narrowband analog is deployed, there is a 6dB degradationinperformance from reduced deviation coupled with a 3dB improvement inreceivernoise performance due to the narrower IF filter, resulting in a 3dBoveralldegradation. High-signal performance is reduced and a high SINADcannot beachieved because some FM sideband information is lost passing throughthe

narrow IF filter. Also, narrowband analog becomes more susceptible tonoisepops, giving up the advantage that normal analog FM enjoys." - inother wordsa wider bandwidth system enjoys a higher S/N ratio due to increaseddeviation,overcoming the additional noise getting through the wider receivefilter.

But, enjoy your analogue FM while you can, because everything isheading towardsdigital. Currently it seems that PBR in the UK is all heading towardsa couple of

competing systems using the same voice codec (AMBE+2 at 3.6kbit/s),and bothmodulate the RF with 4 level FSK. These two ETSI Euro standards varybybandwidth and channel sharing (timeslots) :

DMR Tier II (TDMA)Pulsed due to Time Division with 2 slots in a 12.5kHz channelMotorola's MotoTRBO is DMR-IIDMR tier 1 is used on the 8 wider channels on digital 446 at 446.1-

446.2DMR tier 3 is a trunked system under development.

NXDN (FDMA)Continuous with no timeslots, narrowband (6.25kHz)Kenwood's NEXEDGE and Icom's IDAS


9/106

dPMR on the 16 narrow channels on digital 446

In the amateur world, VHF/UHF digital voice comms are mostly D-Star,which is an earlierversion of the AMBE codec at the same bitrate as the above, andcontinuous (FDMA) like NXDN

but FM modulated as GMSK.

I expect future scanners to decode all 3 open standards if the AMBEcodec is licenced.

Electromagnetic spectrum... (Radiocomms Agency allocations page) try the

glossary at the end for abbreviations

MHz0 Hz No cycles per second - let's call it DC!

The planet Earth itself hums accoustically (apparently)with around 50 persistent notes

between 2 and 7 milliHertz. We are talking of cyclelengths of several minutes here.

--0.000001--(1Hz, 1 per sec.)---

Hz Brainwaves... (Electrical activity in your thinking-gear)0.1... Delta - Sleep3... Theta - Sluggish, day-dreaming

7... Alpha - Relaxed and receptive13... Beta - Very alert30... High Beta - Paranormal powers!

--0.00002=--(20Hz)-------------- Audible if converted to soundwaves (like with, er,

speakers)

ELF,ILF,VLF Atmo-"sferics", "chorus", "tweeks" (1.5-5kHz), "whistlers" - natural phenomena

mainly from lightening pulses trapped in "waveguides"

between ion. layers

0.000050 UK mains AC electricity (50Hz, 240V) - 6000 kmwavelength

0.000067... CTCSS (Tone squelch) tones, background(non standard 33 35.4 36.6 37.9 39.6 44.4 47.5 49.2

51.2 53 54.9 56.8 58.8 63)67 69.3/69.4 71.9 74.4 77 79.7 82.5 85.4 88.5 91.5 94.8

97.4 100 103.5 107.2 110.9 114.8 118.8123 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8

162.2 165.5 167.9 171.3 173.8 177.3

179.9183.5

186.2189.9

192.8196.6

199.5

203.5206.5

210.7 218.1 225.7 229.1 233.6 241.8
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htmhttp://fhdno2.tch.harvard.edu/www/qeeg/qeegintro.htmlhttp://www.futuremind.com/programs.htmlhttp://www.auroralchorus.com/http://www.auroralchorus.com/http://www.eecis.udel.edu/~dra/pl.htmlhttp://www.com-spec.com/64sw.htmhttp://www.geocities.com/rf-man/pmr446http://www.geocities.com/rf-man/pmr446http://www.com-spec.com/64sw.htmhttp://www.eecis.udel.edu/~dra/pl.htmlhttp://www.auroralchorus.com/http://www.auroralchorus.com/http://www.futuremind.com/programs.htmlhttp://fhdno2.tch.harvard.edu/www/qeeg/qeegintro.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra365.htm


10/106

250.3 254.1 Hz (150 Hz is a military standard) (DCSuses 134.4 baud rate)

--sound--------- known as: Headphones0 - 32 Hz Extreme bass

20 - 40 Hz Low bass, bottom octave40 - 80 Hz Mid bass80 - 160 Hz Upper bass160 - 320 Hz Lower midrange0.32 - 2.56 kHz Midrange2.56 - 5.12 kKz Upper midrange5.12 - 10.24 kHz Highs

10.24 - 20 kHz Extreme highs, top octave

---music---0.000016,35 C-1 nice and bass-y (16Hz)

0.000261,63 C3 note "middle C" (see Piano Tuning)277.18 C# (these in Hz)293.66 D311.13 D# To double a frequency in 12 equal steps (semi-

tones) to complete329.63 E one octave, multiply a note by 2 to the power of

1/12th to obtain349.23 F the next note. 440 (A) x 1.059463094 = 466.16

(A#)369.99 F#392.0 G415.3 G#440.0 A used for main reference466.16 A#493.88 B

0.000523,25 C4 the note C again. Only an octave higher. (x2,yeah?)

4186.00 C7 a really annoying 4kHz note C7902.13 B7

0.012543,85 G8 highest midi note

0.002700.. above 2.7 kHz not neccessary for comms speech, phonesetc, and so for

phones it's filtered out. Hence too the 3kHz channelspacings on HF.

0.015... FM broadcast audio is filtered out above 15kHz0.019 FM stereo "pilot tone"

0.020 approx. limit of human hearing (location : Bats 30k-80k, Whales 50k-200k)

--0.003=-----(3kHz)------------- VLF,LF: Mobile, Fixed, Navigation, DGPS, Time Signals

(20,25,50,60,66.6,75kHz)Enormous wavelengths are very useful for penetrating rock

(cave to surface - molephones) andthe oceans (for submarines) but the antennas need to be

rather large, or magnetic loops.See LW enthusiasts site http://www.lwca.org

0.009 UK Thunderstorm detection system, airborne and ground based
http://headwize.com/articles/judging_art.htmhttp://members.aol.com/pianotuned/faq.htmlhttp://www.iua.upf.es/~sms/db/nomenclature.htmlhttp://www.hut.fi/Misc/Electronics/telephone.htmlhttp://w4u.eexi.gr/~sv1xv/lw.htmlhttp://ares.redsword.com/gps/old/sum_pre.htmhttp://www.elec-eng.leeds.ac.uk/staff/eenct/caverad0.htmlhttp://web.tiscalinet.it/vlfradiohttp://www.lwca.org/http://www.lwca.org/http://web.tiscalinet.it/vlfradiohttp://www.elec-eng.leeds.ac.uk/staff/eenct/caverad0.htmlhttp://ares.redsword.com/gps/old/sum_pre.htmhttp://w4u.eexi.gr/~sv1xv/lw.htmlhttp://www.hut.fi/Misc/Electronics/telephone.htmlhttp://www.iua.upf.es/~sms/db/nomenclature.htmlhttp://members.aol.com/pianotuned/faq.htmlhttp://headwize.com/articles/judging_art.htm


11/106

0.0102 ex Omega hyperbolic fix Nav. (& 11.05 & 11.33 & 13.6kHz) ** ceased sep.97 **

0.016 ex GBR, Rugby. A BT service, closed 31.mar.20030.060 MSF British Time signal

0.070...ex Decca Nav. purple slaves, to 72kHz (5f)Llancarfan

0.073 ex UK Ham 4km band ( 71.6= - 74.4= kHz) ** UK only,1996 until 30.jun.2003 **0.084=..ex Decca Nav. masters, to 86= kHz (6f)

Bolberry Down (f=14.046666.)0.100 NELS Loran-C Navigation. 4MW pulsed.

Loophead,Lessay,Sylt,Soustons (90 - 110)0.112...ex Decca Nav. red slaves, to 117.6kHz (8f) Jersey0.126...ex Decca Nav. green slaves, to 129kHz (9f)

St.Marys0.13347 Mobile data service (& 146.705 kHz)0.13675 Ham 2km band (135.7= - 137.8= kHz) ** new Euro band, 1998

**

Decca involved a non-radiated fundamental freq around 14kHz,and a "chain" usedfreq.s that were 5,6,8 and 9 times that of the fundamental.

Ended 31.mar.2000

--0.1485=----------------------- [checked 2012 - wiki link added]0.153.. LW Long Wave AM Broadcasting, to 0.279 - 9kHz channels (ITU

Region1) + some Nav. (NDB)See wikipedia.org/wiki/Longwave

153 Germany, Romania, Algeria162 France (FSK data), Turkey 165 to 190kHz is 1800m

band in NZ (5W ERP max)171 Russia, Morocco (ex possible future Dutch "Delta 171")177 Germany180 Turkey, Russia183 Germany189 Iceland, Russia ex Italy

198 UK BBC Radio 4 (FSK data) Droitwich, Burghead & Westerglenused to be 200kHz(1500m) until Feb 1st 1988... ex BBC R2 ex

Light Programme ex National Prog.For as long as the remaining few valves last, then it will

go silent!

207 Germany, Morocco216 RMC Monaco, ex Norway225 Poland, Turkey, Russia spare UK INR allocation234 Luxembourg, Russia243 Denmark, Russia252 EIRE RTE R1 (ex TeamTalk 25/2/02) ex Atlantic 252, Algeria261 Moscow270 Czech279 Belarus, ex planned MusicMann 279 (Isle of Man)

On old radios, French GO=Grandes Ondes (LW), PO=PetitesOndes (MW), OC=Ondes Courtes (SW)
http://www.eecis.udel.edu/~mills/ntp/msf.htmlhttp://www.imo.org/imo/focus/safnav/safenv15.htmhttp://www.sees.bangor.ac.uk/~paulw/loran/loranwelcome.htmhttp://www.ero.dk/doc98/Official/HTML/REC6201E.HTMhttp://www.ero.dk/doc98/Official/HTML/REC6201E.HTMhttp://en.wikipedia.org/wiki/Longwavehttp://www.bbc.co.uk/enginfo/rpb/http://www.atlantic252.com/http://www.longwaveradio.com/http://www.longwaveradio.com/http://www.atlantic252.com/http://www.bbc.co.uk/enginfo/rpb/http://en.wikipedia.org/wiki/Longwavehttp://www.ero.dk/doc98/Official/HTML/REC6201E.HTMhttp://www.ero.dk/doc98/Official/HTML/REC6201E.HTMhttp://www.sees.bangor.ac.uk/~paulw/loran/loranwelcome.htmhttp://www.imo.org/imo/focus/safnav/safenv15.htmhttp://www.eecis.udel.edu/~mills/ntp/msf.html


12/106

A conference in Prague in 1929 provided for the 9-khzchannels (then called kilocycles) in the

Europeen Broadcasting Area for LW and MW ... "a few hadn'tmoved even by 1964 (MW)"

"LW .. built around 200 Khz being a frequency check by

Droitwich, so went 200,209, 218,..etc and 191, 182...etc the other way. A lot later whenPLL and synthesised tuning came in,

the channels were changed to be multiples of 9, so the LWall moved down 2 Khz.

Before that, the MW had moved (November 1978) UP freq byjust 1 khz for the same reason,

thus 908 (then the BBC Radio 4) became 909 (now 5 live)"

LW : " lower freqs (up to 177 kHz?) moved in late 1987, themiddle section (180-225) in

February 1988 and the top end in Feb 1990. Atlantic 252launched on 254 kHz in Sept 1989"

"Before November 1978 the arrangement on Medium Wave waslike this:

Most channels were 9 kHz spaced, on a frequency which was amultiple of 9 kHz, minus 1 kHz.

For example, London Radio 4 was 908 kHz, Radio 3 was 647kHz, and Radio 1 was 1214 kHz.

There was one 10 kHz spacing at the bottom end: 539 kHz(normal pattern), then 529 kHz.

At the top end there were 8 channel spacings of 8 kHz. Iassume this must have been done to

get one extra channel when the top end of the band wasextended from around 1550 kHz to 1606.5 kHz.

The frequencies were 1538 kHz (normal pattern), then 1546,1554, 1562, 1570, 1578, 1586, 1594, 1602."

1967, 30th Sept : BBC Radio 1 launched, and BBC Light(29.jul.1945), Third (sept 1946) and Home (sept 1939)

are reorganised as Radios 2,3 & 4 (timeline)Light Prog was Forces Prog (1940) renamed for peacetime.Home Service was merger of old National Prog (1930,

previously 2LO (May 1922)) and Regional Prog (1930)

BBC services moved on 23.nov.1978 :R1 from 1214kHz/247m to 1089/275 and 1053/285R2 from 200/1500 to 693 and 909 kHzR3 from 647kHz to 1215/247 "3rd Programme was

on 464m (647kHz) from 1951"R4 from 908kHz (and others) to 200/1500

R5 took over R2's 693/909 on 27.aug.1990INR1 : Classic FM (1992)INR2 : Virgin took over R3's 1215, launched 30.apr.1993 -

Virgin became Absolute in 2008 (sold)INR3 : Talk Radio took over R1's 1053/1089 in Feb 1995

R6 Music : (digital) 11 Mar 2002R1 Xtra : (digital) 16 Aug 2002BBC7 : (digital) 15 Dec 2002 - relaunched as Radio 4

Extra on 2 April 2011
http://www.ebu.ch/trev_290-doeven.pdfhttp://www.mediauk.com/article/8/Guesthttp://www.mediauk.com/article/8/Guesthttp://www.ebu.ch/trev_290-doeven.pdf


13/106

More history from frequencyfinder.org.uk [2012]1922: BBC opened the first regular public broacasting

station in the world on 14th November, London.MW was 600 - 1000 kHz

1926: 25kW LW station opened at Daventry on 187.5 kHz (1600

metres), October.

1926: On 14.Nov.1926, first of many international re-plans,extending to 1200 kHz, with 10kHz spacing.

1929: 2 re-plans, 13.Jan & 30.June - extended to 1500 kHzand abandoned 10kHz channel spacing.

Frequencies allocated to countries instead of toindividual stations.

1934: 15.Jan plan, included UK LW moving to 200 kHz. Thisplan lasted until...

1950: March, new plan extended MW from 530 to 1600 kHz.1978: 9kHz plan introduced.

--0.2835=----------------------- Marine/Aero Navigation (NDB beacons) + Maritime Mobile (CW)

0.472 472-479 Amateur 630m band (WRC-12) - worldwide secondary,limit of 1 W EIRP, likely to start 2013

(followed experimental CW/PSK 600m band 0.495-0.510)0.500 Calling, Distress (CW) from 1906 until near turn of 21st

century. WRC-12 reallocated to nav use.0.518 Navtex, (& 490 & 4209.5 kHz)

--0.5265=-MF-------------------- 0.531.. MW Medium Wave AM Broadcasting, to 1.602 - 9 kHz channels

(to 1.700 in USA, 10kHz ch)See the British DX Club's Lists.

Channels internationally assigned to countries with maximumpower levels specified.

Hence the terms "national clear channel" etc. A country'schannel will thus be used

for either national networks or for lower powered localstations. If the international

plan (Geneva, 22.11.1975) exists anywhere on the web, do letus know!

(update: thanks Adam G1 ZHD )

--kHz-- UK band plan: [checked 2012] see mediumwaveradio.com &mediumwave.de, Wikipedia

558 ILR Spectrum (London), ex Pirates e.g. Laser 558585 BBC regional (Scotland)603 local (BBC/ILR)630 BBC local (2)648 UK: ex National BBC World Service (ceased 2011)657 BBC local (2)666 local (BBC/ILR)693 National BBC R5 Live

720 some BBC R4729 BBC local (1)
http://frequencyfinder.org.uk/trans_hist1.htmlhttp://en.wikipedia.org/wiki/500_kHzhttp://www.navcen.uscg.mil/marcomms/gmdss/navtex.txthttp://www.co.umist.ac.uk/BDXC/lists/lists.htmlhttp://www.ancom.org.ro/uploads/links_files/Legis_conf_reg_geneva_1975.pdfhttp://www.mediumwaveradio.com/uk.phphttp://www.mediumwave.de/http://en.wikipedia.org/wiki/List_of_radio_stations_in_the_United_Kingdomhttp://www.bbc.co.uk/enginfo/rpb/http://www.bbc.co.uk/enginfo/rpb/http://en.wikipedia.org/wiki/List_of_radio_stations_in_the_United_Kingdomhttp://www.mediumwave.de/http://www.mediumwaveradio.com/uk.phphttp://www.ancom.org.ro/uploads/links_files/Legis_conf_reg_geneva_1975.pdfhttp://www.co.umist.ac.uk/BDXC/lists/lists.htmlhttp://www.navcen.uscg.mil/marcomms/gmdss/navtex.txthttp://en.wikipedia.org/wiki/500_kHzhttp://frequencyfinder.org.uk/trans_hist1.html


14/106

738 BBC local (low power)756 local (1)765 BBC local (1)774 local (mainly BBC - some R4)792 local (BBC/ILR) (2)801 BBC local (1)

810 BBC regional (Scotland)819 local (BBC/ILR)828 local (BBC/ILR)837 BBC local855 local (BBC/ILR)873 BBC local882 BBC regional (Wales)909 National BBC 5 Live936 ILR (2)945 ILR (2), University inductive loops954 ILR (2)963 ILR (2), University inductive loops972 ILR (1)

990 local (BBC/ILR)999 ILR + University/Hospital Radio loops1017 ILR1026 local (BBC/ILR)1035 local (BBC/ILR)1053 INR3 Talk Radio UK1089 INR3 Talk Radio UK1107 ILR + INR3 Talk Radio1116 local (BBC/ILR)1125 BBC regional (Wales)1134 RSL low power1143 CFA tests, 11/2000, Wooferton1152 ILR1161 local (BBC/ILR)1170 ILR1197 fill-in INR2 Virgin / Absolute1215 INR2 Virgin (once "Virgin 1215") / Absolute1233 fill-in INR2 Virgin / Absolute1242 local (ILR/INR2 Virgin / Absolute)1251 ILR (1)1260 local (BBC/ILR/INR2 Virgin / Absolute)1269 RSL Brands Hatch1278 ILR + RSL1287 RSL1296 National BBC World Service1305 ILR1323 local (BBC/ILR) + ex RSL

1332 local (BBC/ILR)1341 BBC regional (Ulster)1350 RSL (Hospital RSL)1359 local (BBC/ILR)1368 local (BBC/ILR)1377 ILR (1)1386 RSL1395 the new 'Big L' bigl.co.uk (3 December 2009 to 25 January

2011)1404 RSL1413 local (BBC/ILR/RSL)1431 ILR, RSL1440 ex The Great 208 - Radio Luxembourg (MW closed

30.dec.1991) started 1933, LW, moved 1439 2.jul.19511449 BBC local (some BBC R4), RSL
http://www.virginradio.co.uk/http://www.virginradio.co.uk/


15/106

1458 local BBC/ILR)1476 ILR1485 local (BBC/BBC R4/ILR)1494 RSL Tooting1503 local (BBC/RSL)1521 local (BBC/ILR) 1520 was Radio Caroline (started 28 Mar

1964)1530 local (BBC/ILR)1548 local (BBC/ILR)1557 local (BBC/ILR)1566 ILR1575 RSL1584 local (BBC/ILR)1602 local (BBC/ILR), RSL (top channel of Geneva Plan)

1611 used elsewhere, but out-of-band

--1.6065=------------------------ MF "Fixed & Mobile" - Maritime / Land / Aero(OR)

1.642...Cordless phones (CT0 base), to 1782 (8x 20kHz FM),handsets duplex at 47.456-47.543 MHz (12.5kHz spacing, 6.25

offsets)Channel 7 (1762) may use 47.531 or 47.444To be phased out. No new equipment after apr.2005Handsets on 1690, 1710, 1730, 1750, 1770 may be unapproved

USA gear (base 49.86-49.93)

Amateur Radio 160m "Top Band" (1.81-2.0) shared (SSB used ismainly LSB below 10MHz)

1.6 to 3.8MHz mostly known for maritime use (intership,trawler chat etc)

(3kHz SSB channels 1635-1797 and 2053-2153?)

UK "Fishphone" Coastal Radio Stations (BT) all closed by30.jun.2000

used 25 paired channels :Alpha 2751 2006 Shetland via Wick ex NorwickBravo 2841 2277 Shetland via Wick, ex NorwickCharlie 2604 2013 Shetland via Wick, ex NorwickDelta 1659 2084 Shetland via Wick, ex Norwick

Echo 2705 2524 WickFoxtrot 1797 2060 WickGolf 1755 2099 WickHotel 2625 2108 WickIndia 1856 2555 StonehavenJuliet 1650 2075 StonehavenKilo 1946 2566 StonehavenLima 2607 1999 StonehavenMike 3617 3249 StonehavenNovember 1731 2527 CullercoatsOscar 2828 1953 CullercoatsPapa 3750 2123 CullercoatsQuebec 1925 2105 Humber

Romeo 2684 2002 HumberSierra 2810 2562 Humber
http://www.ou.edu/engineering/emc/phone_cha.htmlhttp://www.ou.edu/engineering/emc/phone_cha.html


16/106

Tango 2698 2016 StonehavenUniform 2628 2009 NitonVictor - Not AssignedWhisky 2782 2111 Land's EndX-Ray 3610 2120 Land's EndYankee 1710 2135 Portpatrick

Zulu 1866 2534 Hebrides via Stonehaven

Coastguards working channels & Maritime Safety InfoBroadcasts - cruising.org.uk/RYA

1641, 1743, 1767, 1770, 1869, 1880, 1883, 1925, 2226, 2596,2670, 2691, 2719

2.182 Calling, Distress (Coastguards)

"...UK, where anyone could hear the Met police on CW - theoperator sat next to the driver with

a Morse key and he would send 'coded' messages to ScotlandYard, like 'X231 Marble Arch to OxfordCircus' which didn't take a lot of imagination to decipher.

These were the Wolsley saloons withthe bell on the front. Frequency again was around 2 megs

and it is the 1930s.

"The ground transmitter was GWW (?) at West Wickham, SE ofLondon, which later became the Interpol

link with France (FSB) and other continental countries,still using Morse and equally obvious

'X-codes' well into the 1980's."

--2.85=---HF-------------------- the "real shortwave bands"!mobile, fixed, military, ISM, SRD, and...

"numbers stations"/more Guide/Newer SGC Guide PDF

o AM BroadcastingTropical bands around 2.4 MHz (120 metres), 3.3 MHz (90

metres) and 5 MHz (60 metres)kHz Bands (as used by the BBC) :3950= - 4000= 75 metres

5900= - 6200= 49 metres +58757100= - 7350= 41 metres (7200-7450 from 29.mar.2009)9400= - 9900= 31 metres +991511600= - 12050= 25 metres +1209513570= - 13870= 22 metres15100= - 15800= 19 metres +1507017480= - 17900= 16 metres

( 18900= - 19020 15 metres SSB broadcasting after 2007 )21450= - 21850= 13 metres25600= - 26100= 11 metresBand boundaries are often ignored by broadcasters trying to

get a clear channel

Pirates, typically abused areas :3880 - 4000 76 metres
http://www.cruising.org.uk/msisched.htmhttp://www.rya.org.uk/cruising/cn/cn42.htmlhttp://www.ibmpcug.co.uk/~irdial/conet.htmhttp://www.blackcatsystems.com/numbers/numbers.htmlhttp://members.tripod.com/bobellis/guide.htmlhttp://www.aoruk.com/guidehttp://www.sgcworld.com/ftp/Books/hfguide.pdfhttp://www.nordicdx.com/iguide/http://www.nordicdx.com/iguide/http://www.sgcworld.com/ftp/Books/hfguide.pdfhttp://www.aoruk.com/guidehttp://members.tripod.com/bobellis/guide.htmlhttp://www.blackcatsystems.com/numbers/numbers.htmlhttp://www.ibmpcug.co.uk/~irdial/conet.htmhttp://www.rya.org.uk/cruising/cn/cn42.htmlhttp://www.cruising.org.uk/msisched.htm


17/106

5700 - 5900 52 metres6200 - 6400..48 metres (very popular)6940 - 6955 43 metres (USA main - SSB)7395 - 7555 42 metres9180 - 9400 32 metres (experimental)11400 - 11600 25 metres

15025 - 15835 19 metres

o Amateur Radio - Current [2012] RSGB Band Plans160m ( 1.81- 2.0) shared (SSB mainly LSB) (1920s)80m ( 3.5 - 3.8) shared (SSB mainly LSB) (1920s)60m ( 5.1 - 5.405) various arrangements worldwide since

200240m ( 7.0 - 7.1) primary (SSB mainly LSB) (1920s)

& ( 7.1 - 7.2) primary (SSB mainly LSB) (WRC-03.Shared from 31.oct.2004, primary 29.mar.2009)

30m (10.1 - 10.15) shared (SSB not recommended) (WARC

1979) 20m (14.0 - 14.35) primary (1920s)16.5m (18.068-18.168) primary (WARC 1979)15m (21.0 - 21.45) primary (1940s)12m (24.89- 24.99) primary (WARC 1979)10m (28.0 - 29.7) primary (1920s)Note: the original bands were harmonically related 1.8, 3.6,

7, 14, 28 (ex 56 band!) etc

UK 'Fivemegs' NoV experiments (Aug2002, for 4 years) 3kHz channels centered:

5260 1st Working Ch FA speech USB:5258.5

5280 2nd Working Ch FB cw / narrowdata

5290 3rd Working Ch FC wide data /speech

5368 (new 1 Aug 2006 - 30 Jun 2010)5373 (new 2006)5400 Primary Calling Channel FE

nets/calling5405 Secondary Calling Channel FM

calling only

o Standard Frequency references, and Time signals

at 2.5, 5.0 (Rugby), 10.0 (Rugby), 15.0, 20.0, 25.0 etc.

o Maritime moreBands :4063= - 4438= kHz6200= - 6525=8195= - 8815=12230= - 13200=16360= - 17410=18780= - 18900=19680= - 19800=22000= - 22855=

25070= - 25210=26100= - 26175=
http://www.rsgb.org/committees/spectrumforum/docs/rsgb_band_plan_2012.htmhttp://en.wikipedia.org/wiki/60-meter_bandhttp://www.navcen.uscg.mil/marcomms/cgcomms/rtchan.txthttp://www.navcen.uscg.mil/marcomms/cgcomms/rtchan.txthttp://en.wikipedia.org/wiki/60-meter_bandhttp://www.rsgb.org/committees/spectrumforum/docs/rsgb_band_plan_2012.htm


18/106

Note the "even MHz" 2,4,6,8,12,16,18 etc (& 0.5 is a quarterof 2!)

whereas Aero has the "odd MHz" 3,5,9,11,13,15 etc.

SSB (3kHz SSB channels) :kHz

2182 Calling, Distress2046+ 2049 intership2053+ 2056 intership2241 British intership2246 British intership2301 British intership4000- 4060 shared with Fixed Service chs 1-214146+ 4149 intership 4B & 4C (4125=4A)4357- 4435 shore chs 401- 427 ( -292kHz split: 4065- 4143)

4417/ 4125 calling6224- 6230 intership 6A,6B,6C6501- 6522 shore chs 601- 608 ( -301kHz split: 6200- 6221)

6516/ 6215 calling

8101- 8191 shared with Fixed Service chs 1-318291 ch 833 GMDSS8294+ 8297 intership 8A & 8B8364 SAR8707- 8716 chs 834-8378719- 8812 shore chs 801- 832 ( -524kHz split: 8195- 8288)

8779/ 8255 calling12353-12365 intership13077-13197 shore chs 1201-1241 ( -847kHz split: 12230-12350)

13137/12290 calling16528-16546 intership17242-17407 shore chs 1601-1656 ( -882kHz split: 16360-16525)



22756/22060 calling25100-25118 intership26145-26172 shore chs 2501-2510 (-1075kHz split: 25070-25097)

26172/25097 calling

12359 Herb VAX498 (nr Toronto) 20:00 - 22:00 UTC

o Aeronautical R or ER (En-Route on fixed airways; so mainlycivil) (3kHz SSB channels) more

kHz2851- 3019 NATS: 2872, 2899, 2971, 3016 (Ireland)3401- 3497 NATS: 3413 (VolMet), 3476 BT: 34824651- 4696 NATS: 46755481- 5676 NATS: 5505 (VolMet), 5598, 5616, 5649 BT: 5610, 5670

(Rugby) Speedwing: 5535 (Cove)6526- 6682 NATS: 6622 BT: 6634 +EC!8816- 8960 NATS: 8831, 8864, 8879, 8891, 8906, 8957 (VolMet) BT:

896010006-1009611276-11396 NATS: 11279, 11336 BT: 11306

13261-13357 NATS: 13264 (VolMet), 13291, 1330617901-17967 NATS: 17946
http://home.sol.no/~stabell/aerohtm.htmhttp://home.sol.no/~stabell/aerohtm.htm


19/106

21925-21997

o Aeronautical OR (Off-Route; so mainly military) (3kHz SSBchannels) GHFS

Watch for "Airfield colour states" every hour at the sameminutes past the hour.Volmet weather info broadcasts are easy to find...

kHz3023 - 3152 3023 SAR (night) and up to 3230= ?3800 - 39504700= -4995= +CCF5450= -5480= 5450 RAF VolMet5680 GMDSS SAR (day)5684 - 5726 57116685 - 6763 67398965 - 9037 9031 "On-the-hour" and H+30 "Architect"

11175 -11271 11175 is the "triple 1" calling channel 11253

RAF VolMet13200 -1325715010 -1509717970 -1802721870=-21924= Fixed23200=-23350=

o Sounding - investigating the ionospheric conditions bysweeping 2 to 30MHz every

5 minutes (100kHz per second). A chirp hits 7MHz at about2:28 into each 5 minute segment

o In the remaining parts of HF, you'd be forgiven for thinkinganything goes :o)

I presume "fixed" on its own means mobile so long as onestation is fixed!

kHz3155= -3400= Fixed + Land & Sea Mobile4000= -4063= Fixed + Sea Mobile (4000-4060 USB, ch1-21)4438= -4650= Fixed + all Mobile +CCF5005= -5450= Fixed + Land & Sea Mobile +CCF5730= -5950= Fixed + Land & Sea Mobile6765= -7000= Fixed + Land Mobile (6.78 ISM : 6.765-6.795, half of

13.56)

7300= -8100= Fixed + Land Mobile8100= -8195= Fixed + Maritime Mobile (8101-8191 USB, ch1-31)9040= -9500= Fixed9900= -9995= Fixed

10150=-11175= Fixed + Land & Sea Mobile11400=-11700= Fixed12050=-12230= Fixed13360=-13600= Fixed + all Mobile (13.56 ISM : 13.533-13.587)13800=-14000= Fixed + all Mobile + EC!14350=-14990= Fixed + all Mobile15600=-16360= Fixed17410=-17550= Fixed18030=-18068= Fixed

18168=-18780= Fixed + Land & Sea Mobile18900=-19680= Fixed (18.9 to 19.02 broadcasting after 2007)
http://www.primenet.com/~rfwatts/uteworld/ghfs.txthttp://www.primenet.com/~rfwatts/uteworld/ghfs.txt


20/106

19800=-19990= Fixed20010=-21000= Fixed + all Mobile21750=-21870= Fixed22855=-23000= Fixed23000=-23200= Fixed + all Mobile23350=-24890= Fixed + Land Mobile

25010=-25070= Fixed + Land Mobile25210=-25550= Fixed + Land & Sea Mobile25550=-25600= Radio Astronomy

o Cadets - CCF etc.

CCF (Combined Cadet Force)Equipment they use tends to read 2kHz higher - 5330

etc.22732413

276838484029 ?4363 ?middle of a Maritime SSB channels section4443

4453 - 4498 4478 49534918 - 4995 4973 calling, 4918 4921 49535300 - 5346 5328 5343 calling

691377087751 data

Sea Cadets (Sunday mornings)6992 RL25 and RL22 6806

RAF Cadets (Sunday 10-13 hrs, Tues & Fri 1930)3236 B33615 A7,B7 3678 A6 3715 B6 3752 C64610 A1 4782 B2 4925 B15245 C1 5770 A2,C2 5792 C47450 A5 7740 A4,B4

o Unlicensed pirate pseudo-hams."Echo Charlie" band at 6.6MHz (please let me know what EC

means!) has been around for decades.

They argue that little real harm is done on the unused civilaero channels, but a lot of

channels ARE used, especially between 6600 and 6635. Of thehundreds of stations active,

some do venture down as far as 6530 but "most don't reallygo below 6635" has been heard.

International flight control may be affected. There may be adozen or more QSOs at any time!

kHz (approx)3430 - 3500 86 or 85m, LSB/USB calling 3475 LSB much aero

use... SAR on 3488 etc.6530 - 6700 45 metres, LSB/USB calling 6670 LSB Italy 6660

Sweden 6685 military above 6682!

12105 -12256 22 metres, USB 12.105 12.1312.16
http://www.geocities.com/CapeCanaveral/Hall/8701/ham/ccf1.htmhttp://members.aol.com/wwoerner/pirat.htmhttp://members.aol.com/wwoerner/pirat.htmhttp://www.geocities.com/CapeCanaveral/Hall/8701/ham/ccf1.htm


21/106

13630 -14000 21 metres, USB/LSB calling 13970 USB 13995? muchdata use, but not all the time

18010 -18050 16 metres, USB/LSB calling 18030 USB stay above18030, it's military aero below!

20900 -20980 14 metres, USB/LSB calling 20930 USB I'd staybelow 20960, if I were you.

I hesitate to include the following because the wholeapproach is subtly different...

26185 -28000 11 metres, USB/LSB calling 27555 USB CB"Freeband"

--26.175=------------------------- Fixed & Mobile (not aero)

The use of HF spectrum as we know it changes near 26.1MHz,where usage becomes morelike VHF/6 metres - services intended to be local, rather

than long-distance.

26 (25?!!) to 28 MHz littered with freeband unofficial CBchannels. (+Callsigns) more

Very nicely operated SSB DX, putting Amateur radio to shame!

26.185..CB freeband Lo-Lo channels 11-40, to 26.505 (midband - 2 x 450kHz) 26285 calling

26.3125.unapproved French cordless phones 15 x 25kHz, to26.4875 (handsets +15: 41.3125-41.4875)

26.330..New Zealand CB 1-40, to 26.770 (mid band -635kHz)calling 26.5 (ch 15)

26.225=.Paging, to 26.9325= 25kHz STH Paging 26.835 & 26.9226.25 JFMG talkback (simp) 12.5kHz 20W, and 26.35, 26.45

26.515..CB freeband Lo channels 1-40, to 26.955 (mid band -1 x 450kHz)

Allowed in Hungary AM/FM 4W mobile, 1W base - andSSB 12 or 3W

26.565..German CB ch.s 41-80, to 26.955 (straight 10kHzsequence)

26.87 ..future SSB CB, to 26.96 (provisional plans - 1999)

"The UK indicted their willingness to participate in thiswork, although they indicated

that they would be opposed to introducing AM/SSB CBoperation."

EU 4026.965..CB, to 27.405 (PR27) 40 FM CEPT "EURO" channels 10kHz

spacings with gaps (+/-2kHz FM deviation)Allowed in the UK since 1988, this is now a Euro band as

agreed by an ERC decisionin 1996. These CEPT channels are the original USA freqs,

known as the "mid" channels, or EU.
http://rob.acol.com/~cb/freeband.htmlhttp://www.geocities.com/CapeCanaveral/Launchpad/8243/cb/http://www.geocities.com/CapeCanaveral/Launchpad/8243/cb/http://www.whitecliffsdx.freeserve.co.uk/freqs.htmhttp://www.geocities.com/RodeoDrive/Mall/3124/chanlcb.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra242.htmhttp://www.jfmg.co.uk/http://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra246/ra246.htmhttp://www.ero.dk/doc98/Official/Pdf/DEC9602E.PDFhttp://www.ero.dk/doc98/Official/Pdf/DEC9602E.PDFhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra246/ra246.htmhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.ero.dk/EROWEB/sewg/Reports/jan99SE.htmlhttp://www.jfmg.co.uk/http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra242.htmhttp://www.geocities.com/RodeoDrive/Mall/3124/chanlcb.htmlhttp://www.whitecliffsdx.freeserve.co.uk/freqs.htmhttp://www.geocities.com/CapeCanaveral/Launchpad/8243/cb/http://www.geocities.com/CapeCanaveral/Launchpad/8243/cb/http://rob.acol.com/~cb/freeband.html


22/106

Shared with ISM, and up to 27.28= with SRD (models - AM oncolour coded channels) (USA models)

26.965 0126.975 02 +"Black" (Models code)26.985 03

26.995 "Brown" / 3A27.005 0427.015 05 +27.020 "Brown/Red" (5a)27.025 0627.035 0727.045 "Red" +Test/Dev / 7A27.055 0827.065 09 +27.070 "Red/Orange" (9a)27.075 1027.085 1127.095 "Orange" +Railway SRDs / 11A27.105 1227.115 13 +27.120 "Orange/Yellow" (13a), +ISM (2x13.56!), ex

Paging (Test/Dev.), & 27.16227.125 1427.135 1527.145 "Yellow" / 15A27.155 1627.165 17 +27.170 "Yellow/Green" (17a)27.175 1827.185 1927.195 "Green" / 19A27.205 20 from 20 to 40 channel num = first two decimals

except 23 to 25...27.215 21 +27.220 "Green/Blue" (21a)27.225 2227.235 24 ! ex 22A27.245 25 ! +"Blue (UK)" ex 22B before 197727.255 23 ! +"Blue (US)" ex top channel until 197727.265 26 +27.270 "Blue/Grey" or sometimes "White" (26a) or

even purple!to

27.405 40 27.315 31 Calling?

Packet (AX25) allowed 20.dec.2002 on channels 24,25 & 32

pre-1958 : USA Ham band at 26.96-27.23 very underused, andthere was little business/military

use up to 28MHz. Model control on 27.255 was inadequate andshared with all sorts of paging.

11.sep.1958 : CB starts, on 22 new 10kHz channels in the oldham band, fitted around 5 new model

channels later known as 3A, 7A, 11A, 15A and 19A. The oldmodel channel was allocated to CB as channel

23 as well as remaining as the sixth model channel. The two-channel gap between 22 and 23 gave rise

to pirate channels 22A and 22B in the Business Band thatcouldn't yet be used for CB.

1.jan.1977: more CB channels added - there had been plansfor 99 channels up to 27.995 but it was

decided not to allow a span of more than 440kHz - to preventintermod breakthrough to any 455kHz

receiver Intermediate Frequency stages. The business band

lost 27.23 to 27.41 to CB, the new channels
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.modelaircraft.org/Comp/frequency.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra127.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra127.htmhttp://www.modelaircraft.org/Comp/frequency.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htm


23/106

(24 onwards) filled in the reclaimed gap between 22 and 23,and then continued up to 27.405 to make 40

channels in all. The five newer model freqs (50kHz apart)are now part of an allocation up to 27.28= in the

UK with channel 25 now being "Blue" (27.245) and channel 02now "Black", amongst other interleaved channels.

The mid channels are transposed up and down the spectrum bymultiples of 450kHz to create

extra sets of 40 channels such as "hi" and "lo", includingthe gaps and sequence jumps!

26.957 to 27.283 is still an 11m Amateur band in NewZealand!

Around 2000 I wrote: "CB should be license-free! Wakeywakey, UK!

Very commendable, I'm sure, but licensing is really needed

as a mechanism to stop idiots using

it - licenses can be revoked. Interesting issue. Maybe a

license should be for life... (unless forfeited)."Then OFCOM announced 23.nov.06 "measures to remove the need

for users of CB radio, of which there arecurrently 20,000, to obtain a licence from Ofcom" -

effective 8.dec.2006

2012 UPDATE :ECC Decision (11)03 of 24 June 2011 paves the way for the

use of 27 MHz SSB CB across the British Islesand Europe, permitting SSB equipment (12W PEP) within band

26.96-27.41 MHz (the EU 40 channels).Preferred date for implementation by national

administrations is October 1, 2011.OFCOM have said they are likely to work on this after 2012

Olympics.

main 11m 'freeband'27.415..CB freeband Hi channels 1-40, to 27.855 (mid band +

1 x 450kHz)

27.41=... Alarms (27.45 12.5kHz 0.5mW)27.41=... once considered for future

Digital CB, to 27.51CB in Roumanie, to 27.66

27.5= ... Mobile, to 28 Weather balloons (sondes)

27.555 International "Freeband" calling, USB, hi channel 12Callers announce the freq they'll move to, usually between

27.41 and 28MHz in 5kHz chs. Very civilised!

UK 4027.601..CB, to 27.99125 (27/81) UK ONLY - 40 FM 10kHz channels

allocated 2.nov.1981

27.60125 ch 1 MHz = (channel x 0.01) + 27.59125 Ch =

first two decimals -60 +1to
http://www.nzart.org.nz/nzart/Repeaters/4-12-Band-Usage-030510NZART-WEBa.pdfhttp://www.nzart.org.nz/nzart/Repeaters/4-12-Band-Usage-030510NZART-WEBa.pdfhttp://www.ero.dk/doc98/Official/Pdf/DEC9816E.PDFhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra246.htmhttp://www.dove.net.au/~ramab/ukcb.htmlhttp://www.dove.net.au/~ramab/ukcb.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra246.htmhttp://www.ero.dk/doc98/Official/Pdf/DEC9816E.PDFhttp://www.nzart.org.nz/nzart/Repeaters/4-12-Band-Usage-030510NZART-WEBa.pdfhttp://www.nzart.org.nz/nzart/Repeaters/4-12-Band-Usage-030510NZART-WEBa.pdf


24/106

27.99125 ch 40 (09 was emergency monitored) 14 some calling19 mobile (27.78125)

27.865..CB freeband Hi-hi channels 1-11a, to 27.995 (mid

band + 2 x 450kHz)

CB can be fairly useful (when you want to speak to normalpeople, not just radio

nutters), but what a pity we're stuck with an HF allocationclogged up with

foreign SSB rather too often... We need a system thatallows silent monitoring,

like CTCSS, or (even better) a 460 MHz system as they do inthe USA, Australia etc.

NOTE: (oct98) it looks like PMR 446 will do nicely, apartfrom the low power.

For the unlicensed, or simply licensed, there are three maintypes of radio use:1) Low-power handheld - now well served by PMR 4462) Base/mobile use that is well served by CB SOME OF THE

TIME3) DX-ing - wasn't well served at all, leading to the 27MHz

SSB and 6.6MHz problems,although getting onto HF legally is now far more simple.6.6MHz SSB should eventually ease off, and to make

matters bearable for FMusers of 27MHz I would say CTCSS is needed. I can't see

11m SSB stopping yet!

There is a need for the kind of local service that allows alow-powered

service with roof-mounted antennas to acheive local CB-likeranges WITHOUT any

possibility of SSB interference (i.e. above 30MHz)preferably using CTCSS/DCS as

with PMR 446. With CTCSS, and given the current demand, Iwould imagine 20 channels

or less would meet the demand. A 200kHz section of spectrumallocated throughout

Europe somewhere between 30 and 217 is hardly asking toomuch is it? The same

bandwidth as ONE radio mic channel? Or extend PMR 446 with 8more channels,

all available to handhelds with captive antennas, but thenew channels available

to base/mobile sets with external antennas and a couple ofWatts of power.

--28.0=------------------------- [checked and updated 2012]

28=... Amateur 10m band, to 29.7= primary CW,USB,Satellite,FM(RSGB Bandplan 2012)

28.32.. Voice... (and other modes 2.7kHz or less), to 29.1=

29.00.. AM usually found here, to 29.1.. maybe 29.2 ...
http://www.geocities.com/CapeCanaveral/Station/5109/http://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.geocities.com/CapeCanaveral/Station/5109/


25/106

29.0029.0129.02

to29.10

29.11.. FM simplex (new from 2011, officially) - still "all modes"allowing AM29.1129.12

to29.20

29.21.. All modes - automatically controlled data stations(unattended) ...

29.21 UK Internet voice gateway - unattended29.22 FM...

to29.28

29.29 UK Internet voice gateway - unattended

29.3=.. Satellite, to 29.5= (Not much remaining satellite use! Soit gets used for FM DX)

Current operational frequencies (AMSAT) [updated 2012](29.30-29.34 probably won't annoy anyone)29.35-29.40 RS-15 (Semi-Operational 2012)29.40-29.50 Oscar 7 (Semi-Operational 2012) & 29.502

29.51.. FM (6kHz), to 29.69 10kHz steps simplex or Repeaters(split: -0.1) 10 or 20kHz

Various parts of these channels used for repeaters indifferent regions

with the remaining channels used for simplex.

29.51.. repeater inputs or simplex, to 29.5929.6 simplex calling

Repeaters shift -0.1 MHz (10 x 10kHz :29.51-29.59)

Region 1 Region 2 Region 3EU/Africa/CIS Americas Australia/East

29.61 simplex 129.62 simplex 2 1 (20kHz)29.63 simplex 329.64 simplex * 4 2 (20kHz) *

GB3CJ (20kHz)29.65 simplex 529.66 RH1 6 3 (20kHz)29.67 RH2 729.68 RH3 8 4 (20kHz)29.69 RH4 9

--29.7=---VHF------------------- (30.0 for the pedantic. I'm going byuse)

Mobile

military (30.3-30.5 and 32.15-32.45 EU1 harmonised) CombatNet Radio, etc
http://www.amsat.org/amsat-new/satellites/frequencies.phphttp://www.amsat.org/amsat-new/satellites/satInfo.php?satID=6http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=9http://www.darc.de/referate/hf/repeater/repeater.txthttp://ac6v.com/repeaters.htmhttp://ac6v.com/repeaters.htmhttp://www.darc.de/referate/hf/repeater/repeater.txthttp://www.amsat.org/amsat-new/satellites/satInfo.php?satID=9http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=6http://www.amsat.org/amsat-new/satellites/frequencies.php


26/106

+ SRD, mics, R/C Models, Cordless Phones, Alarms, HospitalPaging

Military SINCGARS 2320 x 25kHz channels 30-88 MHz, FrequencyHopped (about 100x per second over

portions of the band - typically 1200ch)or Single Channel (AM/FM voice/data) with +/- 5 or 10 kHz

shift - effectively 5kHz steps.

USA :30-40 MHz allocated for private land mobile use in 194725-30 MHz and 44-50 MHz bands allocated for private land

mobile use in 194920kHz channels were introduced in the 25-50 MHz band in 1957Parts of 25-50 MHz allocated to Highway Maintenance, Police

and Special Emergency Radio Services in 1960On rare occasions ion layer conditions allow the reception

of these signals over the Atlantic into Europe.

31.0375.Cordless phone base, to 31.2125 (duplex, split +8.9:39.9375-40.1125) 8 x 25kHz channels MPT1384new in 1997 10mW (4 more channels in

Europe(Netherlands), up to 40.2125)Some countries (i.e. Spain) use 31.025-31.325, 12 x 25kHz

channels (+8.9)Australia has 30.075-30.3, 10 x 25kHz channels (+9.7:

39.775-40.0)

31.725..Hospital Paging, to 31.775Speech in emergency only. Returns at 161/164

34.25... unapproved New Zealand cordless phones 25kHz ch11-20, to 34.475 (handsets +6: 40.25-40.475)

34.925 Alarms for elderly/infirm & 34.95 & 34.975 500uW34.95.. Model aircraft, to 35.3 (26x 10kHz) 100mW channels 55

to 90 EU(was originally 35.0 to 35.25 in 1987 - changed when? 1999?)34.995=.. Euro Harmonised, to 35.225= (35.00-35.20)

ERC/DEC/(01)11: ERC Decision 12 March 2001

34.5=...Marine databuoys, to 34.995=35.225=.Marine databuoys, to 35.5= 25kHz, 250mW

36.5.. Prefered band for use by visiting foreigners fortemporary mics use, to 38.5 (espec. 36.7, 37.1, 37.9)

36.7 Cordless domestic audio devices, & 37.1 (18kHz bandwidtheach)

commonly stereo left/right, deregulated, 10 micro-Watts max

39.0= MBC Meteor Burst Comms, to 39.2= (8x 25kHz : 39.0125to 39.1875) 500-1600km range

now changed their minds to (7x 25kHz : 39.025 to39.175)

Proposed wideband systems at 37MHz

39.9375...phone handsets, to 40.1125 - see 31.0375

40.050 GB3RAL Beacon
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra114/ra114.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/mpt/mpt4.htm#1384http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.ukrcc.org/35mhz.htmlhttp://www.ukrcc.org/35mhz.htmlhttp://home.nordnet.fr/~fthobois/35_mhz.htmhttp://www.ero.dk/doc98/Official/HTML/TR7503E.HTMhttp://www.ofcom.org.uk/static/archive/ra/topics/research/topics/propagation/ionosphere.pdfhttp://www.ofcom.org.uk/static/archive/ra/topics/research/topics/propagation/ionosphere.pdfhttp://www.ero.dk/doc98/Official/HTML/TR7503E.HTMhttp://home.nordnet.fr/~fthobois/35_mhz.htmhttp://www.ukrcc.org/35mhz.htmlhttp://www.ukrcc.org/35mhz.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/mpt/mpt4.htm#1384http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra114/ra114.htm


27/106

40.500 Distress, Rescue (often wrongly listed as 40.050) 40.5 x 3= 121.5

40.66=..ISM, to 40.7= (40.68 +/- 20kHz; = 3 x 13.56) DEC(01)03 SRD** proposed new Euro amateur beacons band **

40.665, 40.675, 40.685, 40.695 Baby Alarms, etc.

40.665..Surface models, to 40.995 (34x 10kHz) 100mW cars andboats channels 665 to 99540MHz, 41MHz (France)

41= ... Harmonised Military Band (EU1)

465=.. meteor burst communications, to 47= UK 46.4,46.95, 46.975

--47=-------------------------- Band I - TV Broadcasting (405 lines b/w BBC1 until 1984 -

so, great for TV DXing now it's clear!)UK: Mobile - SRD, Radio Mics, Alarms

Euro TV 7MHz ch.: E2 47-54, E3 54-61, E4 61-68Old UK 5MHz ch.: B1 41.25-46.25, B2 48-53, B3 53-58, B4 58-

63, B5 63-68 (snd. @ +0.25, vis. @ +3.75)

DAB, if implemented here: 2A 47.936 to 2D 53.072, 3A 54.928to 3D 60.064, 4A 61.936 to 4D 67.072

There was a pre-war (1928) 56MHz ham band, and the 5m band(58.5-60) for three years post-war.

Many imported (UK unapproved) cordless telephones... basechannels :

43.72...US(25ch) & Dutch, to 46.97 (handsets 48.76-49.99) more

45.25...Chinese 10 x 25kHz, to 45.475 (handsets +3: 48.25-48.475)

46.51...Korean 15ch, to 46.97 (handsets 49.67-49.99)

47.64...Dutch to 49.99 (handsets 67.55-71.805)

48.99..."Supaphones" to 49.82 (handsets 67.55-71.745)

47.0 ... Future Euro-harmonised Paging band, to 47.25

47.3=...Alarms & Cordless phones, to 47.55=47.310 Security alarms, & 47.319, 47.331, 47.35647.4 Vehicle alarms47.419 CT0 base, & 47.431 - duplex, see 77.5125 to be

phased out. None new after April 200547.443...CT0 mobile, to 47.544 - duplex, see 1642-1782 kHz

to be phased out

47.550=.JFMG, to 48.880= - talkback (base - split to 52MHz) + links48.3 links - 200kHz stereo, 2/30/365 days48.4=... also used for low power conference/touring, to

48.55=48.425 links - 50kHz mono, + 48.475, 48.525 ( 2/30/365

days, directional TX antenna, 10W max ERP)
http://www.uksmg.org/40mhz.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.bmfa.org/handbook/hbook_13.htmlhttp://home.nordnet.fr/~fthobois/40_mhz.htmhttp://home.nordnet.fr/~fthobois/41_mhz.htmhttp://www.hmso.gov.uk/si/si2001/20010730.htmhttp://www.hmso.gov.uk/si/si2001/20010730.htmhttp://www.geocities.com/SoHo/Coffeehouse/5801/cordless.htmhttp://www.dkscan.dk/telefon.htmhttp://www.itu.int/ITU-D/study_groups/SGP_1998-2002/JGRES09/004e.dochttp://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.itu.int/ITU-D/study_groups/SGP_1998-2002/JGRES09/004e.dochttp://www.dkscan.dk/telefon.htmhttp://www.geocities.com/SoHo/Coffeehouse/5801/cordless.htmhttp://www.hmso.gov.uk/si/si2001/20010730.htmhttp://www.hmso.gov.uk/si/si2001/20010730.htmhttp://home.nordnet.fr/~fthobois/41_mhz.htmhttp://home.nordnet.fr/~fthobois/40_mhz.htmhttp://www.bmfa.org/handbook/hbook_13.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra60.htmhttp://www.uksmg.org/40mhz.htm


28/106

48.880=.Paging - 12.5kHz - 48.975 to 49.4875 one-way only48.975 STH48.9875 STH49.2625 SRBR49.2875 SRBR49.425...Hospitals, to 49.475 (speech only in emergencies)

returns at 161/164

49.5= ...49.82...SRD, to 49.98 baby alarms etc. 10mW max

6m [checked and updated 2012] (RSGB Bandplan 2012)

50=... Amateur Radio 6m band, to 52= (varies in other countries).Primary (51-52 secondary).

Synchronised Beacon Project (others to move by Aug 2014),Telegraphy...

50.10...SSB/Telegraphy - International Preferred, to 50.250.11 Inter-continental SSB DX50.15 SSB centre-of-activity

50.2.. SSB/Telegraphy - General Usage, to 50.350.285 Crossband centre-of-activity

50.3=.. MGM/Narrowband/Telegraphy, to 50.4 (MGM=MachineGenerated Mode)

50.305 PSK Centre of Activity50.31-50.32 EME50.32-50.38 MS

50.4=.. Propagation Beacons Only...50.5=.. ALL MODES...

(railway track to train video over 'leaky feeders' on50.5)

(505-510 Ocean Surface Current Radars. Short-term, NIB)

50.51 SSTV (AFSK)50.52.. Internet voice gateway (10 kHz channels), (IARU common

channel), & 50.53 & 50.5450.55 Image/Fax working frequency50.60 RTTY (FSK)50.62.. Digital communications, to 50.7=

50.63 Digital Voice (DV) calling50.71.. FM/DV Repeater Outputs (10kHz spacing), to 50.89 (split:

+0.5) R50-1 to R50-1750.9=.. general use, to 51.2= ( secondary from 51= )50.91.. UK gateways, to 50.95

51.21.. repeater inputs, to 51.39 (both UK and Euro systems)51.41.. FM simplex, to 51.59 (20kHz channels)

51.51 FM calling channel51.53 GB2RS news broadcast and slow morse

51.6=.. general use, to 51.8=51.65 Emergency and Community Events, & 51.75 (25kHz

aligned), also 51.77 & 51.7951.81.. Euro. repeaters, to 51.99 (split: -0.6) RF81 to RF99 -

20kHz spaced51.91.. Internet voice gateways, to 51.94

USA 6m band is 2x the size, 50-54! (ARRL Bandplans 2012)
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra114/ra114.htmhttp://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.scit.wlv.ac.uk/vhfc/iaru.r1.tel.aviv/taaxe.htmlhttp://www.arrl.org/band-plan-1http://www.arrl.org/band-plan-1http://www.scit.wlv.ac.uk/vhfc/iaru.r1.tel.aviv/taaxe.htmlhttp://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra114/ra114.htm


29/106

52.0=.. JFMG, to 52.95= - talkback (mobile - split to 48Hz) + links

52.75 links - 200kHz stereo - TX antenna directional52.85=.also used for low power conference/touring, to 52.95=52.875 links - 50kHz mono + short term OB, + 52.925

52.95=... ?

53.75=..JFMG, to 55.75= - links (5W)53.8 low power (10mW) 50kHz conference/touring, and 54.1

54.3 54.7 55.4 55.5

Band I 55.75000 - 68.00000 MHz ... channels will be madeavailable to CBS & PBR services...

... No assignments at present... 380 dual channels

Here is an early plan, more recently 62.75-67.75 is one

block with -7 split

55.75=... PBR, see 62.75

ITT Industries Ltd (0787664) 25kHz56.2125 56.2625 56.3125 56.3625

57.5=...CBS (planned), to 60.75= (split +7: 64.5 -67.75)60.050 GB3RAL Beacon

60.75=..JFMG links (5W)61.2 Audio Distribution & 61.7, 62.3, 62.7

62.75=..PBR (planned), to 64.5= (split -7: 55.75-57.50)64.5=... CBS, see 57.5=

67.00625to PBR Tech. Assigned (split -7) CSS

Spectrum Management Services Ltd (0784033)67.19375

67.75... Land Mobile, single, to 68=some JFMG (BBC) :67.75625 (split +6.94375 : 74.7)67.76875 (split +6.94375 : 74.7125)67.78125 (spilt +7.4875 : 75.26875)67.79375 (split +7.4875 : 75.28125)67.8062567.81875

67.83125 (split +7.4625 : 75.29375)

69.15625-69.18125 JFMG mobile :69.1625 : 82.662569.175 : 82.675

Tech. Assigned (on-site data/speech) i.e. forPrimex GPS sync Wireless clock system

67.94375 67.95625 67.96875 67.98125

Euro Recommendation T/R 75-03 (Nice 1985) set 67.5-68 as a

prefered band for UK use by visiting foreigners for
http://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/digital/bandplans/lowband-midband.dochttp://www.ero.dk/doc98/Official/Pdf/TR0201E.PDFhttp://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.ero.dk/doc98/Official/Pdf/TR0201E.PDFhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/digital/bandplans/lowband-midband.dochttp://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.ofcom.org.uk/static/archive/ra/publication/misc/lmr_rep99/landmobile99.htmlhttp://www.jfmg.co.uk/http://www.jfmg.co.uk/


30/106

temporary PMR use by "ITINERANT ENTERPRISES AND SPORTINGEVENTS", but 75-03 has not been implemented by the UK

There is a Euro plan (25-08) to re-organise 54-68:61.0125 ... Base, to 67.9875 (split -7: 54.0125-60.9875)

--68=-----Low Band-------------Mobile, military, emergency services (French splits -

4.05, -5, -3)Military PTARMIGAN access links

There is a Euro plan (TR 25-08) to re-organise this band:77.8125 ... Base, to 87.4875 (split -9.8: 68.0125-77.6875)

single: 77.7-77.8 and 74.8-75.2 & 84.6-85

Various countries overseas allow FM broadcasting from 65-74and 76-87.5 (eg OIRT), this often reaches us.

68.08125= start of VHF Low for PBR, boundary68.0875.PBR, to 69.9875 single, dual: see 81.5875

68.55 OFCOM plan says this is single (unpaired)68.625 demo/parking

(68.816=.. JFMG, to 69.904= - Talkback base (12.5kHz - splitto 75MHz) to cease in 2000)

4m [checked and updated 2012] (RSGB Bandplan 2012)-70=--...Amateur 4m band, to 70.5= (since 1956; when 70.2-70.4)

CountriesSecondary (Full/Intermediate Classes only).started as UK (G/M/2) only, with British Gibraltar (ZB) and

Cyprus (5B), and Eire (EI)

now with South Africa (ZS/ZR), and Slovenia (S5)
http://www.ero.dk/doc98/Official/HTML/TR7503E.HTMhttp://www.ero.dk/doc98/official/pdf/TR2508E.PDFhttp://www.jfmg.co.uk/http://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.70mhz.org/theband.htmhttp://www.70mhz.org/stuff.htmhttp://www.70mhz.org/bands.htmhttp://www.70mhz.org/bands.htmhttp://www.70mhz.org/stuff.htmhttp://www.70mhz.org/theband.htmhttp://www.rsgb.org/committees/spectrumforum/band-plans.phphttp://www.jfmg.co.uk/http://www.ero.dk/doc98/official/pdf/TR2508E.PDFhttp://www.ero.dk/doc98/Official/HTML/TR7503E.HTM


31/106

Denmark (OZ) now allows (July 2003) 70.025, 70.05 and 70.1(max 25W, 10 kHz)

Faroes (OY) CW on 70.1Greenland (OX) (Sept 2003)Croatia (9A) (2003) 70-70.45 (10W)

70.0... Beacons...

-70.10= -Narrowband - CW/SSB70.185 Cross-band centre-of-activity70.2 SSB/CW calling-70.25= -all modes---70.25 Meteor Scatter calling70.26 old calling frequency (from 1950s) still in use - AM/FM70.270 MGM centre of activity (MGM=Machine Generated Mode)70.2875-70.294= --FM simplex--- (12.5 kHz channels) ---70.3 RTTY/FAX70.3125 data/digital70.325 DX Cluster70.3375 data/digital

70.350 (Emergency priority)70.3625 data/digital70.375 (Emergency priority)70.3875 data/digital - gateways70.4 (Emergency priority)70.4125 data/digital - gateways70.4250 (some use by GB2RS)70.4375 data/digital70.45 FM Calling channel70.4625 data/digital70.475070.4875 data/digital-70.5=---

70.5125.H.O.ex Fire Service mainscheme (post WARC 79), base, to 71.5=

12.5kHz AM/FM (mobile 80-81.5)Migrated to Airwave TETRA by July 2010

71.5125.PBR, to 72.7875 single, dual: see 85.012572.375 STH/demo/parking

72.8... Land Mobile: MoD, to 76.7 (73.3-74.1 EU1harmonised) Helicopters allowed 72.8-74.8

74.6875... JFMG, to 74.7125 - Talkback

75.0 CAA ILS runway marker beacons (Guard band 74.8-75.2)200ft, 1 & 3.5 miles from touchdown. From 1950s.

75.2625=.. JFMG, to 75.3= - Talkback mobile (split to 69MHz)(airborne to be phased out)

76.7125.PBR, to 77.4875 single, dual: see 86.7125 ...77.5... PBR, to 77.9875 single (used to be paired with 87.5 to 88)

77.5 PBR, and standard telemetry channel
http://wkweb1.cableinet.co.uk/gm4zuk/4m/theband.htmhttp://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.jfmg.co.uk/http://wkweb1.cableinet.co.uk/gm4zuk/4m/theband.htm


32/106

77.5125 CT0 extended Cordless phones, & 77.55 (mobile; baseat 47.431 & 47.419) to be phased out

77.625 once mobile paired with 82.8 base77.6875 Simple UK Light (was UK General)

Four channels between 77.75 and 77.9875 were once

mobile paired with base at +8.7125/8.7in the 86MHz single section, between 86.4625 and86.6875

A new plan now shows 86.4625 - 86.7 split -8.7125 :77.75 - 77.9875

77.725 well used, and 77.7375, nothing between here and81.575 on OFCOM WTR

78=... Land Mobile: MoD (79-79.7 EU1 harmonised)Helicopters allowed 78-80

(Thailand yellow CB at 78.0 - 78.9875)(78.18375=... JFMG, to 78.25875= - wide area or location

talkback - 12.5kHz)(78.190 78.2025 78.215 78.227 78.240 78.2525)

80... H.O. (Fire) mobile, to 81.5= (and 83.5-84) - see 70.5Some vehicle-vehicle use (Eng & Wales - not Herts)

80-85 (mobile) and 95-100 (base) AM - used by Policestarting from 1942-50 until move to 143-156 MHz

in 1987-89. Before that, MF regional schemes at1.6-1.8 MHz from 1940 using telegraphy,

later telephony - until VHF move, 1947.80.25-80.3875 used by ROC/WMO in 1980s, fairly clear

ever since?

(81.5 Radio Astronomy - Interplanetary Scintillation -Cambridge +/- 1MHz?)

81.5=...PBR / CBS - new for the late 1980sLxxx = (freq - 78.2) / 0.0125 freq = (Lnumber x

0.0125) + 78.2

81.5125.PBR Single, to 81.575 (nothing on WTR except RAC MotorSports Assoc Ltd)

81.5125 L26581.575 L270 MSA, Rallies (from June 2003. Was 86.4375 AM

from 1976)

81.5875.PBR, to 83.5 (split -13.5: 68.0875-70.0) or Single81.6625.Data only (IR2008), to 81.8875 (ch 358-360?!)81.8 L288 CBS predominantly (82.05 OFCOM plan says this is single (unpaired)82.125 L314 Demo/"parking" (temporary use) (:68.625)

82.25 L324 Data Dominant, to 82.275 L32682.2875 L327 Data only (IR2008)
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra412.htmhttp://www.jfmg.co.uk/http://www.ringbell.co.uk/ukwmo/newpostradio.htmhttp://radio.astro.gla.ac.uk/ips/ips.htmhttp://radio.astro.gla.ac.uk/ips/ips.htmhttp://silkrallyradio.biz/815750qanda.pdfhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/dataonpmr/q_answers.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra347gn.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/dataonpmr/datadom.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/dataonpmr/datadom.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra347gn.htmhttp://www.ofcom.org.uk/static/archive/ra/topics/pbr/dataonpmr/q_answers.htmhttp://silkrallyradio.biz/815750qanda.pdfhttp://radio.astro.gla.ac.uk/ips/ips.htmhttp://radio.astro.gla.ac.uk/ips/ips.htmhttp://www.ringbell.co.uk/ukwmo/newpostradio.htmhttp://www.jfmg.co.uk/http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra412.htm


33/106

82.3 L328 CBS predominantly, to 82.3375 L33182.35 L332 Data only (IR2008)82.3625 L333 Data only (IR2008)

Somewhere around 82.5 OFCOM's channel numbering seems to

miss 0.2MHz :Now Lxxx = (freq - 78.0) / 0.0125 freq = (Lnumber x0.0125) + 78.0

82.5125 L361 Data only (IR2008)82.5875.L367 Data only (IR2008), to 82.6125 L36982.625 L370 Data Dominant82.6375 DGPS - from autumn 200082.65 L372 Data Dominant

82.6625 JFMG Location TalkBack (base) :69.162582.675 JFMG Location TalkBack (base) :69.175

82.825 L386 Data Dominant82.8375 L387 Data Dominant82.8625 L389 Data Dominant82.875 L390 CBS

to CBS "predominantly" in 25kHz steps - and83.0125 too

83.050 L404 CBS

83.1 highest PBR in this band on WTR

83.4 Humberside Fire Brigade (0129242)

83.5... H.O.84 ... MoD, to 85= - RAF, Mil.Police (ISM at 84.0 +/-

4kHz)84.3 mountain rescue

8585= ... Private Business Radio, to 87.5=

PBR listed so that you can avoid tuning in by accident.(same info can be found on Radiocomms Agency site anyway)

Was the main place to find Water co.s, councils, AA/RAC,forestry, customs, taxis etc.

12.5kHz channels.Pre WWII VHF AM was in 200kHz channels, 100kHz in 1947,

50kHz late 40s, 25kHz 1956-1960, 12.5kHz 1969- first Pye demonstration of 12.5kHz in 1957. Initial Pye

gear 77-83 & 94-100 MHz.85.1375-85.2 ex GPO/BT

Lxxx = (freq - 85) / 0.0125 freq = (Lnumber x 0.0125)+ 85

85.0125.PBR, to 86.2875 (split -13.5: 71.5125-72.7875)
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra355.htmhttp://www.mcga.gov.uk/sandr/framework/UK_SAR_Framework_Document.pdfhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra266/bands15.htmhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra266/bands15.htmhttp://www.mcga.gov.uk/sandr/framework/UK_SAR_Framework_Document.pdfhttp://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra355.htm


34/106

85.0125 ch L00185.875 STH (:72.375) or either, singly Also used for

demos and parking86.2875 ch L103

86.3....PBR single, to 86.7

86.3125 Land SAR86.325 Land SAR, secondary, some areas86.3375 Simple UK Light (was UK General), to 86.375 (4 ch)86.675 JFMG, Talkback (12.5kHz) Wales and west.

86.4625 PBR, to 86.7 (split -8.7125: 77.75 - 77.9875) newplan

86.7125.PBR, to 87.4875 (split -10: 76.7125-77.4875) no longerextends to 87.9875 (or starts from 86.9625)

86.8125.JFMG, to 86.8375 - wide area duplex Talkback(12.5kHz) (+airborne)

The 86.7= to 86.95= section used to be used for 10 x 25kHzlinks, same -10 split.

87.34.. Eurosignal paging, to 87.415 (4 x 25kHz channels A-D) heard in UK from Europe. info.

Used to be a constant AM tone with pips and doodle-doo noises, as featured in the song

Professionnels by Air (Premiers Symptomes), andcould be heard on tuners at 87.5

Changed in March 1998 to bursts of FM data. Frenchchannel is 87.39 (C)

87.4875 L199 (highest freq. Low-Band channel)87.49375= boundary (above 87.4875 by 6.25 kHz - half a 12.5

kHz channel)

--87.5=------------------------ Band II - FM Broadcasting (100 kHz channels) 87.6-107.9

RDS Field StrengthIndependent Radio managed by the Radio Authority.See the British DX Club's Lists. Tuners. SBS. FM DX.

1937 : High HF USA 'Apex' wide-bandwidth AM stations at

25 to 44 MHz, 117 MHz1939 : Band I Pioneering USA FM, from around 40 MHz up

to 49.9 (100kHz steps) 42.1=ch21 49.9=ch991945 : Band II FCC allocates 88-108 for FM, June 27th. ch

201 88.1 to ch 300 107.9 (0.2MHz steps)1946 : Band II FM moves from Band I in the USA -

allocations in Sept 1945, moves complete by end of 1948

1955 : 88-94.6 3 BBC Programmes start, from Wrotham, Kent(Home Service, Light & 3rd Prog.)

1961 : Stockholm conference plans 87.5-100.Proposals for Bands I to V by Research Department

1962 : Aug 28 : Zenith-GE stereophonic system

tests on the Wrotham transmitter (3rd Prog.)
http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra412.htmhttp://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.dtag.de/english/news/journal/archiv/081297.htmhttp://ftp.chscene.ch/ccc/habi1/127_funkdienste.htmlhttp://www.rds.org.uk/rdsfcontents.htmlhttp://www.ofcom.org.uk/static/archive/ra/topics/broadcasting/document/vhfreplan/annexc.htmhttp://www.radioauthority.org.uk/http://www.co.umist.ac.uk/BDXC/lists/lists.htmlhttp://www.audioadvisor.com/Intro/FMTUNER.htmlhttp://www.sbs.uk.com/mapdata/overview.htmhttp://www.dxradio.demon.co.uk/http://www.dxradio.demon.co.uk/http://www.sbs.uk.com/mapdata/overview.htmhttp://www.audioadvisor.com/Intro/FMTUNER.htmlhttp://www.co.umist.ac.uk/BDXC/lists/lists.htmlhttp://www.radioauthority.org.uk/http://www.ofcom.org.uk/static/archive/ra/topics/broadcasting/document/vhfreplan/annexc.htmhttp://www.rds.org.uk/rdsfcontents.htmlhttp://ftp.chscene.ch/ccc/habi1/127_funkdienste.htmlhttp://www.dtag.de/english/news/journal/archiv/081297.htmhttp://www.jfmg.co.uk/http://www.jfmg.co.uk/http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra412.htm


35/106

1967 : 94.6-97.6 sub band opened (was mobile services). BBCservices renamed R2,R3,R4

1969 : 105-108 JRC start to use (mobile services) - andother PMR (split: 138-141)

1970 : BBC local radio introduced in London in1970, in the new sub band

1973 : Independent radio follows, Capital and LBC(later News Direct) same sub band1979 : 100-108 allocated (WARC) but not all cleared for

some time1981 : Mixed polarisation introduced (Wrotham)19

Documents

Nato Frequencies