Comparison of the Research Communications HDTV GaAs Preamps By
G. L. Dybwad Albuquerque, NM USA [email protected] October 25,
2008 Slide 2 HDTV Viewing Conditions Im located in Albuquerque, NM,
and the HD broadcast antennas are only 9 miles away, but my antenna
view is completely blocked from line of sight by a granite ridge of
the Sandia Mountains as shown. This comparison data should be added
to my previous data report of April 17, 2007. I use an
AntennasDirect DB8 antenna and Belded RG11 low loss coax cable to
the F-connector on my Dish 722 DVR satellite receiver. The only
thing changed was the two preamp models located in the weather box
mounted below the antenna. Slide 3 Results of the Comparison HDTV
Pre Amp Res. Comm. Model 9253 (no longer available) Res. Comm.
Model 9260 (present production) Technical Specifications Noise
Figure = 0.6 dB; 21.5 dB gain Noise Figure = 0.4 dB; 23 dB gain
Surge ProtectionNOYES Current LimiterNOYES Digital Stations
Received1217 Average Signal Strength for All Received Digital
Channels 7679 Results The 9260 preamp, best Ive tested, is even
better than the 9253, and offers improved electrical protection on
the mast
