Heavy clipping causes (almost a square wave) which produces odd harmonics.
Very light clipping (not so square) may also include some even harmonics. If
you look at the signal with an O-scope, it is easy to see.
Hal W5GHZ
Sent from Yahoo Mail. Get the app
On Tuesday, July 31, 2018 10:38:09 PM GMT, Bill Somerville
<g4...@classdesign.com> wrote:
On 31/07/2018 16:18, Black Michael via wsjt-devel wrote:
Sometimes you see the 2nd and sometimes the 3rd (and once I've seen the 4th).
Depends on how well the rig suppresses the 2nd harmonic.
Hi Mike,
I don't understand how you come to the conclusion that the rig could suppress a
2nd harmonic and not not suppress a 3rd harmonic of audio passed to it by at
least the same amount. I can't think of any way that could happen with an SSB
transmitter unless the fundamental is below ~200Hz.
OTOH odd-integer harmonics are often the result of clipped signal distortion.
73
Bill
G4WJS.
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