+10R is provided by Q307 on the transmit exciter board.? Sounds like
you probably have a bad transistor or other problems on the transmit
exciter board.
If you want to get rid of it, you can send it to me :)
73
Stan
KM4HQE
On 4/4/25 20:31, Mike Davidsohn G3ZCC
via groups.io wrote:
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Hi everyone,sad news.
I traced the issue,finally, no 10R getting to the filter
board, not even on the socket.
Checked the 10R on the psu board, exactly 10.0v
Removed The front panel and the two banks of switches. No 10R
but 13.6 v. On A and B
The switching seems,to work? though.
At a complete,loss now.
Last gasp the circuit is hard to read where do the switches
derive the 10 R from? Just in case I am missing something.
It's the dustbin if I can't find the problem
Thanks?
Mike G3ZCC
?
?
