Bill, W7WEL wrote: Since building the 100 watt add on, I have been venturing into a bit of SSB. The ...mic I'm using is a hand mic that came with the TS 570, a dynamic with 600 ohm impedance.
I don't think the ALC (Talc) action is working properly. With the mic gain set at 3 and the compression ratio at 4-1 the ALC lights up 3 bars. These settings are extreme and the on the air audio is "Breathy" with lots of background noise. Not good. But, even at these extreme settings, power-output seems low and restrained. I've tried every possible combination of mic gain/compression. ...I'd like to hear from others what their experience is with various mics and mic settings, troubles and remedies, etc. ---------------------------------- Bill, if your ALC is flickering even one bar, you are hitting the full peak output you have the POWER control set for. MIC 2 and MIC 3 are identical gains. Only MIC 1 is different. It inserts about 10 dB of gain. The number of ALC bars lighting only indicates how much gain reduction the AGC has to use to hold the output power down to your requested level. More or less bars do not mean more or less output as long as at least one bar is flashing. The presence of a lot of background noise suggests that you have plenty of mic gain anyway - assuming that's what others are hearing with nominal signal strengths. Background noise will sound much louder on a nearby monitor receiver because of the huge signal level at such close range. I'm not real sure what you mean by "restrained" but one thing a lot of ops with K2's on SSB miss is that note in the KSB2 manual to adjust the BFO frequencies for best reproduction of your voice. Setting them by Spectrogram gets them close enough for a lot of ops, but there's nothing like actually hearing your own signal. If you can, listen on an auxiliary receiver and record it, then play back the recording. You may find that shifting the BFO frequency a bit one way or the other will do a lot to improve the quality of your audio beyond the basic setting looking at Spectrogram. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
