46 47TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 07-08/2014 — www.TELE-audiovision.com www.TELE-audiovision.com — 07-08/2014 — TELE-audiovision International — 全球发行量最大的数字电视杂志

Maxing MB04

• perfect weather protection of the built-in DiSEqC switch

• easier cabling and installation work

• excellent reception results• any LNB can be connected

to second input

Universal LNB with built-in

DiSEqC switch

TEST REPORT LNB with DiSEqC

07-08/2014

www.TELE-audiovision.com/14/07/maxing

48 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 07-08/2014 — www.TELE-audiovision.com

TEST REPORT LNB with DiSEqC

When you want to receive two different satellites without a motorized dish, you either use a monoblock LNB or two separate LNBs. A monoblock can be used only in special cases, for example, if the satellites of interests are only a few

degrees apart. In all other cases you need two sepa-rate LNBs and a DiSEqC switch so that your receiver can switch from one LNB to another.

But this is not true any-more! Maxing Electronics Technology have developed

a very interesting product. It is an LNB with a DiSEqC switch built-in. Maxing gave this unique new product the name MB04 and it looks like a typical universal Twin LNB at first sight. But that is misleading. Do not con-nect two receivers to this

MAXING MB04 - LNB with DiSEqCThe best solution

to add a 2nd LNB outdoors

Forget a Separate DiSEqC Switch

device! Instead, you should connect a coax cable from another LNB to one of the MB04 F connectors and a cable from a set-top-box to the other F connector. Your receiver should be set up to work with a DiSEqC switch. DiSEqC position A is for the MB04 LNB while position B is for the sec-ond LNB. This second LNB can be any regular LNB. In this way, you do not need a two-way DiSEqC switch in your antenna setup. It is inside the Maxing MB04 LNB.

What are the benefits? Well, you have only three F junctions instead of five in a typical setup. Thanks

to that you can expect bet-ter reliability. Also the ca-bling is somewhat simpler as you do not have to care where to mount the DiSEqC switch. Best of all: you do not have to care to insulate the DiSEqC switch against the waether, as it is well protected inside the hosu-ing of the MB04 LNB.

As the MB04 looks like a Twin LNB it is the same size and it is not any heavier. Its workmanship leaves nothing to be desired. And what about the parame-ters? Well, its Noise Figure is specified as 0.3 dB mini-mum and 0.7 dB typical. All other parameters seem to be quite typical for a uni-versal LNB.

OPINIONEXPERT

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RECOMMENDEDPRODUCT BY

Jacek PawlowskiTest Center

Poland

MAXING MB04LNB with DiSEqC

50 51TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 07-08/2014 — www.TELE-audiovision.com www.TELE-audiovision.com — 07-08/2014 — TELE-audiovision International — 全球发行量最大的数字电视杂志

We decided to test this device on our toroidal an-tenna on which we have a number of LNBs. We measured one of the ex-isting LNBs - dedicated for ASTRA 28.2° East and then another one mounted in the position to receive ASTRA 19.2° East. The first LNB was a very good contemporary LNB with NF=0.1 dB. We took these measurement results as our reference levels.

Then, we removed the LNB for ASTRA 28.2° and mounted in its holder the MB04 LNB. We also con-nected the MB04 with the second reference LNB for ASTRA 19.2° East.

As you can see in the

graph, the MB04 output was stronger than that of the reference LNB by 2 through 8 dB. It means than you can use long coax cables with the MB04.

When we compared sig-nal quality we noted that its MER was 0.5...2 dB low-er than that of 0.1dB LNB reference. Which makes it a very good choice for reg-ular DTH installations.

On the following graphs we tested the MB04 impact on the signal coming from the second LNB. The signal was attenuated by a couple of decibels what is abso-lutely normal for a DiSEqC switch. The strong point is: its MER did not change. So, signal quality at the MB04

● superb weather protection● full MER goes through● excellent workmanship● well suited for DTH reception

● none

output was as good as at its input.

To sum it up: the MB04 LNB with its built-in DiS-EqC switch performed very well and can be suc-cessfully used throughout the regions well served by DTH satellite like in Eu-rope. You also do not have to worry about the quality of the DiSEqC switch – it is very good. The MB04 will not add any extra noise to the signal from the second LNB.

And, last but not least, so much simpler cabling by using the MB04 which adds extra reliability to any re-ception system.