ALC is supposed to be linear, non-distorting. Change the level without changing the waveform.
Compression is non-linear and changes (distorts) the waveform. I’ve read that the K3 uses RF limiting at the first IF for compression. If so, the ALC would be before the modulator and compression after it. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 31, 2022, at 5:32 AM, Bob Schwerdlin <[email protected]> wrote: > > I agree. From one old sound engineer to another... I see this as audio > compression. > > Bob, WG9L > > On 1/30/2022 6:17 PM, [email protected] wrote: >> -----Original Message----- >> From: [email protected] On Behalf Of Fred Jensen >> Sent: Sunday, January 30, 2022 4:10 PM >> To: Elecraft Reflector <[email protected]> >> Subject: [Elecraft] What happened to ALC? >> >> I can remember, shortly after SSB appeared on the ham bands that "ALC" >> showed up and was immediately inducted into that top category of things like >> canned beer and sliced bread. It would reduce the dynamic range of your >> signal and fill out your RF envelope... >> Maybe I'm not well-versed in today's whiz-bang technology, but to this old >> sound engineer this sounds suspiciously like compression. >> Jim - WS6X >> >> ______________________________________________________________ >> 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] > > ______________________________________________________________ > 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] ______________________________________________________________ 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]
