George KB2Z <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hello Mike,
Have you tried lightly cleaning the switch contacts with a de-oxit type
solution.
Cant say for sure, but it sounds like a dirty, worn, or mis-aligned band
switch.
Good luck, George kb2z
At 11:08 PM 5/27/05 -0400, you wrote:
Hello Drake Guys,
I am new to the group. I have a problem I hope someone can help with.
My TR-7 (that I bought new) has an intermittent receive/transmit problem.
When I push the PTT on the sideband mode the TR-7 will not go into
transmit. If I try closing the key in CW mode again it will not go from
receive to transmit (the sidetone monitor does come on). The relay does
not close. This goes on for a while then the radio will work for a number
of weeks, then the problem happens again. The WEIRD part is that if it
stops working on 14, 7 or 3.8 mhz I can go to 21 or 28 mhz and it will
work there. If I go back and forth, 14 mhz or less will not work and
21mhz or higher will work. This has always been the case. The TR-7 will
then work fine for a few days or weeks then go into this cycle again. I
have tried different microphones including a new one. Do you think it is
the relay, if so why would it always work on 21 mhz or higher. Any ideas
would be greatly appreciated.
73 Mike WD5GLW
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