[Elecraft] K3: 630m amplifiers

[Jim Brown]

On Mon,7/27/2015 4:57 PM, Tom Azlin W7SUA wrote:
> In all the old handbooks the discussion of amplifier design says ( 
> page 76, 1941) "In amateur transmitters, and r.f. amplifier is 
> invariably operated Class C ( see Chaptr 3)." I though the final tuned 
> circuit was simply "pulsed" at the RF freq and then the output 
> filtering knocked off harmonics leaving a clean CW note. 

Yes and no. Yes, the tank of a class C amp is pulsed and the output 
network kills the harmonics. But it does NOT kill the intermodulation 
distortion that is produced by the non-linearity, and that intermod is 
heard as clicks.

BTW -- you need a MUCH newer Handbook. :)

73, Jim K9YC