[Collins] problems with kws-1 tx audio

ROLYNN PRECHTL K7DFW k7dfw at clatskanie.com
Sat Oct 23 16:10:02 EDT 2010


If what I think is happening is true, then this was addressed in HINTS &
KINKS Vol. 7, 1965 page 40.

Problem is audio in CW mode and erratic VOX.

Fix is to lift the ground end of R103 (680 Ohm) on V101a cathode, lift the
ground of R106 (1K Ohm) on V101b cathode, connect the two lifted ends
together and then connect them to S101c contact 8.

With this mod the cathodes float in CW/STBY and are grounded in SB/AM/CAL.

Done on both my units and works FB.

Give 'em hell Fern.

K7DFW


..._._



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