Question about Yaesu FT-1000MP

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Audio distortion with desk mic

System: Yaesu MD-100 desk mic, FT-1000MP, and VL-1000 amp. Original owner. Beginning about 5 years ago, using the desk mic, produces bad audio after about 1 minute of xmit. 3 other mics, all Heil with no problem. Local tech cannot find the problem. Any ideas? 73, K9KUZ

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  • James Kouzman
    James Kouzman Nov 28, 2014

    there are switches on the bottom to shape the audio - I never used them, just had them set to "off", so I'll start with that. tnx. Jim.

  • John L radiodude365 Dec 01, 2014

    excellent. I hope it works.


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I do not know your specific mic, but a lot of the Vertex (Yaesu) mics have a gain control built into them inside the housing. Take it apart and look for the control near the microphone. The ones I have worked on were rotary. Try moving one way, then the other until you get the best sound to the end user.

Posted on Nov 27, 2014

  • James Kouzman
    James Kouzman Nov 28, 2014

    The mic has some switches under it, to shape the audio. I'll check these. tnx. Jim.


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You'll probsbly find the cardioid unit is faulty in they mic, Ive had this happen before. Being a capacitor type device it can take minutes to hours to occur sometimes.

Posted on Nov 27, 2014

  • James Kouzman
    James Kouzman Nov 28, 2014

    might be time to install another Heil element.


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