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--></style></head><body lang="EN-US" link="#0563C1" vlink="#954F72"><div class="WordSection1"><p class="MsoNormal">We were unable to command PSAT on the last few passes and I finally listened to the uplink from our venerable 16 year old D700. It had a low level buzz that would clearly mess up an AX.25 packet.</p><p class="MsoNormal"> </p><p class="MsoNormal">So I swapped out the switching power supply and did the next pass on Battery with trickle backup. Still no joy. And STILL the buzz. So, its inside the radio.</p><p class="MsoNormal"> </p><p class="MsoNormal">Anyone else seen this?</p><p class="MsoNormal"> </p><p class="MsoNormal">Note, if you have a less than stellar packet performance on any radio, it is a good idea once a decade or so to listen to your own signal by ear and make sure it is clean. ;-)</p><p class="MsoNormal"> </p><p class="MsoNormal">There are so many transmit and forget systems on the air… I remember a digi transmitting dead silence on every digipeated packet in central PA for over a year that maybe no one noteiced because no one was “listening”…</p><p class="MsoNormal"> </p><p class="MsoNormal">The ears are marvelous tools… too bad they are centrally located in a questionable cavity…</p><p class="MsoNormal"> </p><p class="MsoNormal">Bob, WB4APR</p></div></body></html>