[Elecraft] [K3] 150 watt "boots" for 160m

Bill W4ZV btippett at alum.mit.edu
Fri Dec 11 17:45:00 EST 2009




Ron D'Eau Claire wrote:
> 
> Quite right Bill, in an audio laboratory or perhaps in a very quiet
> telephone circuit. 
> 
> But radio communications is different according to what I learned in
> school,
> lo' these many years past. Over half a century ago most radio
> communications
> engineers began using 3 dB (2:1 power ratio) as the minimum change in a
> signal level that would normally be just discernable to the listener,
> considering typical band noise and QSB. That was based in actual
> on-the-air
> observations by a great many operators over time. 
> 

Ron I cited the reference for the 1 dB definition.  Please provide the same
for your 3 dB number.  160 meters is a very good audio laboratory IMHO.  It
quickly separates those who can hear from those who cannot.

73,  Bill

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