Re: K3: Odd ALC behavior
Posted by
Richard Lamont on
Aug 04, 2017; 6:46pm
URL: http://elecraft.85.s1.nabble.com/K3-Odd-ALC-behavior-tp7633052p7633091.html
On 04/08/17 19:33, Brian Hunt wrote:
> Here's some followup:
> FLDIGI shows the "pumping" affect with carrier tones of 500, 1000, 1500,
> and 2000 Hz.
> WSJT-X 1.8 shows the "pumping" affect with carrier tones of 1000, 1500
> and 2000 Hz (couldn't select 500 Hz).
>
> The affect is very narrow with frequency. 10 Hz either way and the
> output and ALC display and MON output is rock solid. Changing the K3
> filter center frequency has no effect on the above.
This looks like a beat between the modulating frequency and some
sampling process associated with the ALC meter.
73,
Richard G4DYA
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