Have you any thoughts about what might be causing Don's K2/100 to behave
when he switches the display from RF to ALC? I can see how the ALC might
'hunt' on SSB, but switching the display should not make any difference to
ALC action I would have thought.
73,
Geoff
GM4ESD
----- Original Message -----
From: "Steve Kavanagh" <[EMAIL PROTECTED]>
To: <Elecraft@mailman.qth.net>
Sent: Wednesday, November 01, 2006 1:55 PM
Subject: Re: [Elecraft] SSB output overshoot
I think Don's observations sound like the problem I
and a few others have had. See, for example the
symptoms described here:
http://www.ac6rm.net/mailarchive/html/elecraft-list/2005-03/msg00676.html
http://www.ac6rm.net/mailarchive/html/elecraft-list/2005-12/msg00408.html
These two, at least, were due to the KSB2 ALC circuit
having insufficient attenuation range to control the
output of K2/100's which have above-average overall
transmit gain on the lower bands. The fix involves
adding a resistor and changing another in the KSB2.
Gary Surrency at Elecraft was able to provide me the
necessary details.
But Mike's problem sounds much less severe. It might
be a marginal case of this effect, I suppose.
73,
Steve VE3SMA
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