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Problem with Headphones




By Lendosan on Nov 02, 2007

" "
We have purchased four Cobra MT600 radios and also purchased four 2.5mm jacks to allow us to use four Universal headsets. However when we plug them in they seem to transmit continously. To combat this we turned on the VOX, but on both settings we cannot transmit vocally.

Can you help?

Same Problem

Dec 19, 2008

-   Is there anyway to use headphones with the Atlantis 250. -   stbcrossroad

Best Solution

posted on Nov 03, 2007
Very Helpful)

Benimur

Rank: Guru 
Rating: 88%, 3777 votes
Hi,

Can you pls add a few more details:
1. are the 2.5mm jacks stereo (3 pins) or mono (2 pins):
2. is your universal headset monaural or stereo; and
3. originally, did the universal headset came with 2 separate plugs?

At most that I can give you is a general/generic idea. The external speaker/microphone (or in your case the universal headset) uses also the charge jack, chances are that it is a multi terminal/pin jack. Pls refer to the diagram below.



The reason it is in continuous transmit is because one of the mini speaker is wired to the PTT trigger or the pins are wired wrong;

This would also explain why no transmit audio either manual or via VOX.

Hope this be of some help/idea. Post back how things turned up or should you need additional information.

Good luck and kind regards.


Comments:

Feb 01, 2008

- Hi,

Any developments with your headset/2-way radio project?
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