Re: 150 watt "boots" for 160m

Posted by Bill W4ZV on Dec 11, 2009; 10:45pm
URL: http://elecraft.85.s1.nabble.com/150-watt-boots-for-160m-tp4151943p4154204.html

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