[Elecraft] Amp power per $$ spreadsheet download

Jim Brown jim at audiosystemsgroup.com
Mon Apr 27 01:18:25 EDT 2015


On Sun,4/26/2015 10:05 PM, Vic Rosenthal wrote:
> A CW operator doesn't care about IMD,

WRONG!  CW is a carrier amplitude-modulated by a series of square waves, 
and the harmonics of which that square wave consists excite IMD in the 
gain stages! The IMD from those harmonics is what we hear as clicks. The 
faster the rise time, the greater the order and magnitude of the 
harmonics produced, so the louder and wider are the clicks. An important 
reason the K3 is MUCH cleaner than nearly all other rigs is that they 
have carefully shaped the keying waveform to minimize the amplitude and 
order of those harmonics. AND - they refuse to give us menu settings to 
screw it up, a mistake that virtually every other manufacturer makes.

73, Jim K9YC


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