MFJ-1263 Help

Discussion in 'Microphones, Speakers & Audio Processing' started by KG5UN, May 9, 2019.

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  1. KG5UN

    KG5UN Ham Member QRZ Page

    I have an MFJ-1263 microphone/radio switch and need some help.

    I want to use it to switch mics between a Kenwood TS-2000 and an Icom 9100 but I cant get it to work.
    I can use the Kenwood wired mics with the Kenwood but not the Icom. I can use the Icom wired micw with the Icom but not the Kenwood.

    I have double checked and triple checked the jumper placements per the manual but no luck.

    Anyone had better luck with this?

  2. W6IR

    W6IR Ham Member QRZ Page

    The Icom mic requires a voltage to operate which is why it won't work on the Kenwood. You can put a blocking cap on the mic line from the Icom and use the Kenwood but you'll probably need to crank the gain up from where you have it set for the Icom mic. In reverse, the Icom mic would need to have a voltage inserted via a bias-T in order to work on the KW.
    KG5UN likes this.

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