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Kenwood TK-790 microphone connector

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wrightracing

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Does anyone know where online to get the round 12 pin microphone connector
For the Kenwood TK-790?

Or does anyone know what the connectors part number is?



David...
 
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mmckenna

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The socket on the radio end is Kenwood P/N E56-0410-15

The plug on the microphone isn't available on it's own from Kenwood, but you can buy the replacement cord for the KMC-27/KMC-28 microphone, has an RJ45 plug on the end to plug into the bottom of the mic and the 12 pin on the other to plug into the radio. Kenwood P/N is E30-7647-05 List price is about $49.
Might be better to just purchase an old microphone off e-Bay and "roll your own".

The connector itself is listed in the service manual as "Universal 12 pin connector".

Only source for these I've been able to locate is direct from Kenwood.

Pinout is:
1 SB O Power output after power switch (MIC (13.6V or 13.4V±15%)
2 HK I Hook signal input. “L” : On hook, “H” : Off hook
3 ME – MIC eearth.
4 MIC I MIC signal input.
5 E – Earth.
6 TRD I/O TX data output/RX data input.
7 NC – Not used.
8 DM I/O Serial data input/output for keypad MIC.
9 BLC O MIC backlight control signal output. “H” : On, “L” : Off
10 PTT I PTT signal input.“L” : TX, “OPEN” : RX
11 NC – Not used.
12 NC – Not used
 

wrightracing

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I wonder were the guys that make the program cable get those connectors?
I did ask one place that made the cables, but they would not tell me.

Thanks for the info.


David...
 

mmckenna

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I wonder were the guys that make the program cable get those connectors?
I did ask one place that made the cables, but they would not tell me.

Thanks for the info.


David...
Good question, and I doubt Kenwood makes it themselves.
Haven't seen them on the market anywhere, and they seem to be specific to Kenwood radios.

However, given enough money and a contact in China, nearly anything can be done.
 

opelgtalex

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The microphone connector is available as a kit from Kenwood parts (East Coast Transistor or Pac Parts).
Part Number is: W01-0440-15
The kit does not come with the pins, and they are difficult to install due to their small size.
From memory I believe the connectors are made by Hirose.
you would be better off buying a used mic cable off of eBay if you need to make up a test cable, I ended up doing that to be able to inject audio for doing alignments.
-Alex
 

mmckenna

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you would be better off buying a used mic cable off of eBay if you need to make up a test cable, I ended up doing that to be able to inject audio for doing alignments.
-Alex
That's exactly what the service manual recommends. Take the replacement cable, cut off the RJ-45 and split out the mic circuit.
 

wrightracing

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I was hoping for a easy place to get the connector because I found a great deal on new cables with a RJ45 on one side and the RJ12 on the other. It let's me use the cable with a kmc-27 mic on TK730 radio with a RJ12 jack. Then all I would have to do is replace the RJ45 with the round 12 pin for a TK790.

I help out a bunch of guys that volunteer at the desert races in Baja. I do repairs and programming. The microphone cables on the TK790 radio's are notorious for poor quality and almost always fall apart. I just hate paying $60+ just for a cable that should be under $15 at most. I have already done the transplant of the 12 pin connector to a new cable, I was just looking for one with the pins. I have the special crimper to do the small stuff. I just needed a source for both to make it easier.

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HummerMike

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Just for thought. I use a TK-790 and a TK-890 on my base set up. I bring my Mic. connections in the back 25 pin accessory plug. You could use a 25 pin male din plug (~$8) and a female 8 pin RJ adapter and short cord (~$20). Put this together and use any Kenwood 8 pin RJ style Microphone with your TK-*90 series.
Look up (MOTOROLA HKN6129A) on Ebay. This can be had for $14. Pair it with the 25 Male plug to attach to the Kenwood mobile and you are set for RJ-45 style Kenwood Mics.

Mike
 

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wrightracing

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That is a good idea Mike for a base unit. Many of the TK790H radio's we use in off road racing have the KRK 5 remote head kit mounting the base under a seat or on the roll cage in back. I have hardwired a cable out the rear of the remote with a old Roadmaster Radio Mobile 5-pin connector. It is used to connect a Racing intercom for headsets or helmets wired for communications. I did a install with that same 5-pin on a center console that worked great. So I have options, I just wanted to make an OEM connector another cheap option.





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wrightracing

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You really only need 5 pins on the TK790 or TK730 to run a basic microphone and a audio line out on that same connector.

Pin 1- Speaker
Pin 2- Mic +
Pin 3- PTT
Pin 4- Mic -
Pin 5- shield

I have done these on over 100 radio's since 2002 on the 730 and 790 and the metal connector is the most durable.

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