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FT847 direct TX after turning on TRX ( Not MOX )


 

Hi FT847 users

I have a question:

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I have a FT847 that will transmit immediately when I turn ON the TRX not always but nearly always

Now and then the TRX works fine for some time , then suddenly starts to transmit on its own

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Some info:

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MOX knob is NOT the cause

Nothing is connected, no microphone, only the antenna and power cable , so no external cause
No short inside the 8P Microphone connector

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Did anyone see this problem before ?
please let me know here in the FT847 Group or DIRECT via?
pa3dol@...

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Many thanks in advance

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Best 73

Sjoerd

PA3DOL


 

Does it matter which mode the rig is in?