No. Nothing heard.
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My HP generator does a good job of either AM or FM modulation and I had tested both functions on my Kenwood TS-590sg a few days ago.
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But in this case I couldn't hear a signal at all and the S meter didn't move on RX.
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I even tuned around a bit up and down in case the reference frequency had gone south but never found any signal.
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One other test I did.. on 2m, I keyed up my Yaesu FT-50r on one of the local repeater frequencies and listened for anything on the 847. Again, tuning up and down almost 1 mhz each way.. Nadda.
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I also took the unit off of the dummy load and connected it to my 6BTV in the back yard.. Setting the radio to FT8 frequencies (both 40m and 20m).. nothing heard other than standard white noise.
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I fear that his radio may be not worth repairing.. but, not my radio and I'm not able nor willing to make a call like that.