Mike -- as I recall there was a project described in CQ magazine way back that provided for QSK in the C-line. I think it was fairly complicated but supposedly did a good job. Someone here on the list may have a copy. I'll search thru my files too if that's the kind of solution you're looking for.

Dino KL0S

On 2Dec2009, at 9:07 PM, Michael C. Marx wrote:
Hi All,

I am trying to get my C Line to work QSK CW and am running into trouble with the R4C's AGC. I have sped up the Fast release time but it's still too slow. If I mute the R4C during transmit and unmute during receive, I get a loud POP and THUMP in the audio everytime I release the key. It's much worse when operating on my frequency rather than running split. BTW, my R4C is FULLY Sherwoodized. I also have one that is not and basically in the AGC department, they operate the same. On the other hand, the R4B has WONDERFUL AGC for QSK operation. But, of course, lacks in the selectivity department. Does anyone have any ideas?

73,
Mike WB0SND
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