Andreas, are you measuring SSB using a peak Watt meter? If you are just measuring it on an average reading meter, your power level will always appear lower than a continuous CW carrier.
73, Eric www.elecraft.com _..._ On Sep 30, 2012, at 11:03 PM, Andreas Hofmann <[email protected]> wrote: > Don (and others), > > One problem down, one to go. > > I believe I have solved the modulation issue. I started fresh and did all > alignments, from Freq calibration, PLL, Filters, BFO passband (with your > excellent descriptions on how to use Spectrogram). Especially the BFO was > way off. I am not sure if these settings somehow deteriorate overtime or what > happened. I know that stored digital values cannot simply change, but analog > components can and maybe that's what it is. Or (not impossibly) I screwed up > big times 9 years ago when I built the K2. I listened in a SDR and really > noticed how the BFO passband changes the overall modulation. Great. > > Now, my SSB power output is still not very good. I would think that this is > an ALC issue. On the same frequency on 40m, using a dummy load, I can get > 110 W out in CW, but about 40 W in SSB (and me screaming into the mike), with > ALC showing four LEDs on the right display. On 20m, I get about 40 W out > without an ALC. This is with both the Elecraft MH2 and the Elecraft Heil pro > 2. > > So, I think I am kind of back to my original issue of trying to attempt the > QRP Projekt mods for more mike drive and ALC circuits. Or are there other > things I should be checking first? Is there a way to temporarily "disable" > the ALC to see if the output is artificially controlled ______________________________________________________________ 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
