[amsat-bb] EO-80 FM Transponder Tested (noise floor?)

[Robert Bruninga]

Wow,
If I read that correctly the charts are showing almost 20 dB or more higher
noisefloor measurements on VHF than UHF.  That is a huge difference.
But in the text they say it is "30 dB" higher.  I haven’t had time to dig
out why the say that, but at a first cut, this shows the 9 dB link advantage
of VHF over UHF vanishes at the ground station trying to hear a weak signal
in the noise...

I did not have time  to thouroughly digest the report.  SO may have jumped
to the wrong conclusion based on the details.

Bob, WB4aPR

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of M5AKA
Sent: Wednesday, June 17, 2015 1:23 PM
To: AMSAT BB
Subject: Re: [amsat-bb] EO-80 FM Transponder Tested (noise floor?)

Results of Ambient RF Environment and Noise Floor Measurements Taken in the
U.S. in 2004 and 2005
https://www.wmo.int/pages/prog/www/TEM/SG-RFC06/Ambient-RF-noise.pdf

73 Trevor M5AKA





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