Date: Mon, 08 Nov 2010 17:26:51 -1000
From: Ken Brown <ken.d.brown@hawaiiantel.net>
Subject: Re: [Amps] our amplifier in 2010 CQWW
To: AMPS <amps@contesting.com>
Message-ID: <4CD8BF7B.7080800@hawaiiantel.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Well now lets see:
10 * log (2.5/1.5) = 1.76,
so if they were "very loud" they would have had to been doing something
very right with their antenna system, or had very good propagation.
Less than 2 dB does not make the difference from "loud" to "very loud."
You'd be hard pressed to see the difference on an S meter. If you closed
your eyes and just listened, you would not be able to hear the
difference.
## On My old drake R4C.... the difference between S-3 [agc threshold] and
60db over S-9
amounted to exactly 3 db in the audio level.....due to rx agc action. So
you are
correct, close your eyes, and you will never hear the difference... you can't.
Jim VE7RF
(you can leave your eyes open and get the same results.)
Perhaps 2 dB might give you the edge in a pileup, but not much of an
edge. And it will help a little bit when your signal is right about
equal to the noise level. It will make the difference between a QSO and
no QSO, occasionally, but not often. If you're already loud, or very
loud, 2 dB more is not going to be very impressive.
The advantage of an amplifier that can put out 2.5 kW is not the higher
full power capability so much as it is the more reliable, high duty
cycle, long term, full legal limit capability.
Ken N6KB
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