Communications headset tester

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  1. - 9th December 2006, 21:23 #9
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    Luciano
    Luciano is offline Senior Member
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    Quote Originally Posted by skimask
    I probed the connector without the headset plugged in and didn't get any power on any of
    the pins (well, a few mV, but it was very jumpy, so I figured it was being induced from somewhere).
    Did you measure that on the functional station 12 miles away or did
    you measure that on the headset tester?

    If the station uses an electret microphone then you will have
    about 3-9V DC between the microphone line and the microphone GND.


    Example of similar circuit:
    http://www.tkk.fi/Misc/Electronics/c...tretinput.html

    Best regards,

    Luciano

    EDIT: 3-9V DC with the electret microphone disconnected.
    -
    Last edited by Luciano; - 9th December 2006 at 21:46.
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