[Elecraft] K3 AM TX - Questions and Observations

Tom W8JI w8ji at w8ji.com
Tue May 11 09:02:38 EDT 2010


I can't speak for details on the K3. Only generally.

> I also have a question regarding asymetric AM modulation 
> and the K3 - is it
> possible for the TX to exceed 100% positive modulation 
> whilst maintaining
> less than 100% negative? Being only new to the AM mode, I 
> am not sure if it
> is possible with any TX that uses low level modulation. 
> Any info greatly
> appreciated.

It is actually easier to have clean asymmetrical modulation 
with low-level AM than it is with a tetrode in a plate 
modulated circuit. It is also easier to have better 
linearity with low level modulation.

http://www.w8ji.com/amplitude_modulation.htm

Someday I'll have to get an AM filter and try my K3. I guess 
there is no way to use the transmitter without an AM 
filter????

73 Tom 



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