Bill,
It is also a mystery to me that it is intermittent rather than a solid
failure. That might imply that something is breaking into oscillation
and overwhelming the VRFDET line. That is why I suggested you check the
component placement and the diode orientation.
That intermittent condition can also be caused by a soldering problem
that takes some time to appear.
For the non-transverter bands, it is only necessary that the 4.7pF
capacitor be in the circuit and that relay K1 be in the reset position.
If you hear a relay click when this problem starts, then look to the
firmware on the K60XV to make sure all its related components are in
place - there are not many. If you do hear the relay click, one thing
you can do is to arbitrarily replace the resonator. While I have never
seen an intermittent resonator (dead one = yes), it is one possibility.
73,
Don W3FPR
On 11/28/2020 5:59 PM, Bill Coleman wrote:
Thanks, Don, I’ll check it out when I have a chance next week. I appreciate
your suggestions. At the moment, the K60XV and the K2 are about 35 miles apart….
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