Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Thu, 31 Jan 2008 21:55:33 -0600
The theory is (and its proven regularly by waterfall spectrum displays) that driving up to ALC leads to third order intermod being only 25 or 30 dB down and with most transmitters running lower power
Jerry, VERY interesting, especially about some amplifiers not improving the intermod products with the power reduction. They must have an interesting linearity curve. Thanks as always, for your techn
I imagine Jerry is right. But my comment is that high power at ALC limit levels is not needed or desirable in PSK. As most here already know, it is regular practice to operate with only a very modest
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Fri, 01 Feb 2008 13:03:18 -0600
Curve is right, hardly a straight line anywhere. But a little more linear than the class C modules. Built in character display or output in morse? 73, Jerry, K0CQ ____________________________________
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Fri, 01 Feb 2008 13:08:05 -0600
And my one evening's experience showed that the side comments will be shown to those showing detectable third order intermod products.. E.g. In a pause between sides of a two way QSO, a third ham wil