Bob, Sounds like the antenna relay to me.
To test that theory, attach a lead to the VLF Antenna input on the rear Aux connector and see if signals get stronger. That input bypasses the antenna relay. Be careful not to transmit with the VLF Antenna attached. I attached a picture of the Accessories socket pinout. Pin 7 is the VLF Antenna input. There's a photo of the antenna relay here: http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-10.htm in the 'Quiet Fan' mod section. 73, Tom, AG9X On Thu, Sep 17, 2009 at 6:02 AM, robert donchez <[email protected]> wrote: > hope someone can shed some light on this please > am a reasonably new tr7 owner and love it- always wanted one back in late > 70's but couldnt afford it then. > > every once in a while my tr7 turns on and sensitivity, volume, and many > hetrodynes- almost no receive any band--- turn it off, wait 10 seconds- > starts up fine > using it with the drake power supply > any ideas where to start would be appreciated > tnx > bob donchez > wb3hyb >
<<attachment: TR7_accessories_socket_pinout.png>>
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