Question about Kenwood FreeTalk XL TK-3101 (15 Channels) 2-Way Radio

4 Answers

Kenwood tk 3102 and autocom

I'm using the autocom device on my bike w/ the kenwood tk3102. it receives great from the second unit as a handheld but won't transmit.
both radios' lights come on as they should, but the receiving radio just has white noise and no voice. both radios work perfect by themselves. i have all the appropriate leads, are the radios compatible?

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  • 4 more comments 
  • dshep May 18, 2008

    i purchased 2 units and they both have the same problem. seems unlikely they're both bed

  • dshep May 18, 2008

    they are both kenwood tk 3102 A

  • dshep May 18, 2008

    the units are the active rider plus. the cables are all autocom, kenwood specific.
    the problem i'm having with the diagnosis is that both units are doing this. i fell it's unlikely both are at fault

  • dshep May 18, 2008

    done that. they're baffled also. what about the quite talk feature on the kenwoods? would that cause no voice signal

  • dshep May 19, 2008

    i guess i should go back to the basic question:
    is the kenwood tk 3102 (A) compatable with the
    autocom active rider plus? i know the units are
    not bad, the cables are not bad, the radios work perfect on their own. i'm using the recommended kenwood cable to interface with the autocom unit. everything works perfect except you can't transmit through the headset. you can receive through the headset when the second radio is used as a handheld. when you transmit back to the handheld through the headset and the autocom it sends the signal through to the handheld but it's just white noise and no voice

  • dshep May 19, 2008

    ok everyone was right. a defective cable. i just assumed a cable fresh out of the packaging from autocom would be good. thanks for the help

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4 Answers

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  • Master
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kenwood tk 3102 and autocom - moz-screenshot-1.jpgmoz-screenshot-2.jpgPlease use the link to get the manual:


http://inform3.kenwoodusa.com/Manuals/USA_LMR%5CTK-2100-3100_B62-0950-30.pdf




good luck......................

Posted on May 19, 2008

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  • Master
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Hi,

with the indulgence of IrishDruid and many thanks to micromaster....

The radios are compatible since as you posted "...both radios work perfect by themselves..."

Based on your post, I would suspect that the transmit audio line from the Autocom to the mic input of the Kenwood TK3102 is faulty/not connecting right. All others (receive audio and PTT) are wired correctly. This is inline with what IrishDruid has initially posted. Additionally, the Autocom is also working since it kicks the PTT through its VOX (voice activated relay) and there is transmit (albeit the TX audio) or manual PTT.

Additionally, there are some 2.5mm connectors that are just a bit short of what Kenwood requires.


Posted on May 18, 2008

  • Louie  Role
    Louie Role May 18, 2008

    Hi again,

    Would you pls post back the exact model of your Autom?

    Normally, in most systems, the 3.5mm connector is for the speaker. The end terminal is for the speaker + while the body is for the ground, while the 2.5mm connector would be for the mic and PTT. the end terminal is your audio line, the second for the PTT and the body for the ground.


  • Louie  Role
    Louie Role May 19, 2008

    Based on your post "...just white noise and no voice...", I still think that the 2.5mm stereo phone plug is not reaching deep enough to make contact with the Kenwood's mic input. Either that or the mic audio output of the AutoCom has an issue.

    Would you consider a DIY or seek the assistance of an electronics tech/enthusiast? If yes, to determine if the Kenwood is able to transmit using external mic, it would require purchase of an appropriate size mini phone plug (2.5mm?) that will fit into the external mic jack of the Kenwood, something similar to the one shown here. The details are indicated at this images.If you would plug this 2.5mm mini phone to the mic of the Kenwood and short the PTT to ground, you are simulating the transmit. If you would touch the audio line, you should hear a humming sound in the other Kenwood acting as receiver aside from the "white noise". The next step would be to use small alligator clips with wire to jumper gnd to gnd, PTT to PTT and mic to mic of the AutoCom's mic connector/plug to the rear end of the 2.5mm stereo phone plug that is inserted into the Kenwood. If this works, there is nothing to be concerned with the Kenwood nor with the AutoCom and the fault is with connector/plug.

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  • Master
  • 2,712 Answers

It looks like either the autocom is defective, or you have incorrectly wired it. Since both radios work perfefctly well standalone, its only the communicator , ie the Autocom device which seems to be the problem.

Please take a look at this FAQ page for more details..
You can rach Autocom's Tech Support HERE.

Hope that helps!

Posted on May 17, 2008

  • 1 more comment 
  • Swilin Sampson
    Swilin Sampson May 18, 2008

    I would suggest you get in touch with Autocon at the link I provided.

  • Swilin Sampson
    Swilin Sampson May 19, 2008

    yes, they are perfectly compatible. Please take a look at this FAQ page for more details..

  • Swilin Sampson
    Swilin Sampson May 19, 2008

    Also, try exchanging the radios and make the sender the reciever. See if you are still having white noise. If you are, then the problem is with the Autocom device. If not, then the problem is with the original recieving radio,,

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  • Master
  • 3,614 Answers

What is the model of the other radio...?

Posted on May 17, 2008

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