the K3 is also good in that you can select the power output to be band specific. (under CONFIG). So if your amp needs 50w on 15 and 35w on 80, set it once and don't worry about it anymore.
Mark n2qt ----- Original Message ----- From: "Jim Brown" <j...@audiosystemsgroup.com> To: <Elecraft@mailman.qth.net> Sent: Tuesday, November 24, 2009 1:01 PM Subject: Re: [Elecraft] K3 & ALS 600 > On Tue, 24 Nov 2009 10:59:23 -0600, Steven Pituch wrote: > >>I do not use ALC with my ALS600 and my K3. > > You're doing it right. Modern power amps do not need ALC except as > "belt and suspenders" protection when something goes wrong (by > modern, I mean those made in the last 30 years). > > The right way to drive a power amp is to control output by setting > drive level from the transceiver (in this case, the K3) AND > carefully tune the power amp for maximum output as read on a meter > in line with the antenna. The combination of these actions minimizes > distortion products from the power amp. > > Setting the transceiver to more than the needed drive power and > depending on ALC to reduce the drive often causes the amp to be > overdriven, so it produces distortion (splatter, harmonics). Not > nice. > > 73, > > Jim K9YC > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
