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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
