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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
