[AMRadio] Linear Operation for AM


John Coleman jc at pctechref.com
Mon May 11 10:57:27 EDT 2009


As Don K4KYV and others have said before, linear amplifier's most linear operation, for AM, generally occurs when the drive carrier level is set to about 20 to 25 percent of the peak capability of the linear amplifier.  Unfortunately this is also where the worst efficiency occurs.  Therefore there is a lot of tube heat dissipation that occurs.  This is all OK if the amp is big enough but it can cause replacement of tubes to be necessary more often than most of us would prefer.


John WA5BXO



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