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Vertex/Kenwood Mobile Mic Compatibility?

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Looking at the mic jack on several Vertex mobiles, it looks to be the same as on most Kenwood mobiles. Does anyone know if this is the case, and if so, whether or not the pinouts are also the same?
 

mmckenna

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I doubt it.

While they often use RJ-45 connectors, the pinout is not standardized between manufacturers. There is usually some low voltage, data, PTT and various signaling pins, getting those wrong can create issues. Probably not destroy anything, though.
 

KG4INW

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Our school buses use a mix of Kenwood and Vertex mobiles. Recently, one showed up at the shop saying no one could hear them (Kenwood installed). They had broken their microphone and replaced it with a Vertex unit they found somewhere. It didn't work at all but also didn't break anything.
 

KM4ONG

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Not wanting to hijack the thread but continuing conversation about this I am in the same situation as I have a Kenwood TM-733 and a Vertex Desk Mic and wouldn't mind tinkering attempting to make an adapter to change the pinout for compatibility if anyone has information or thinks this may work?
 

kayn1n32008

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Not wanting to hijack the thread but continuing conversation about this I am in the same situation as I have a Kenwood TM-733 and a Vertex Desk Mic and wouldn't mind tinkering attempting to make an adapter to change the pinout for compatibility if anyone has information or thinks this may work?
Find the pinouts and schematics for each, and see. You will likely need to put a new plug on the Vertex with the correct wires in the correct pins.
 

cmdrwill

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And to confuse the pin out issue, some manufactures label the RJ connector pin numbers backwards.
 

KM4ONG

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Find the pinouts and schematics for each, and see. You will likely need to put a new plug on the Vertex with the correct wires in the correct pins.
Wouldn't be a problem to do that as I have the things to make a new end on it but I have a Kenwood KMC-9c on the way and will test and also research the pinouts and if I can figure out the correct wiring I will make a perf board showing which pins move where and post pics if I can get it to work.
 

kc8ufv

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Our school buses use a mix of Kenwood and Vertex mobiles. Recently, one showed up at the shop saying no one could hear them (Kenwood installed). They had broken their microphone and replaced it with a Vertex unit they found somewhere. It didn't work at all but also didn't break anything.
That's good engineering on both company's part. It's always good practice to make any user-accessible connection as fail-safe as possible. On mic connectors, as current levels needed in the mic are extremely low, current limiting is often used. That type of interconnection could still result in a stuck transmitter, though (depending on the specific pinouts of the mic and the radio in question)
 
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