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Thread: Talk Off Problem

  1. #1
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    Default Talk Off Problem

    I have installed tone panels on two different Radius setups in the last couple of months and have ended with a talk off problem with both.
    One system was a GR300 pair and a TP3200 panel and the other was a M120 pair and a Zetron 38. I followed any additions and such that the individual tone panels' manuals listed. I have also worked with the adjustments on both TX radios and have ended up with radio deviation set to a low level and low inputs to the panels also.
    These are intended to be backup emergency machines for 2 meters and 440 amateur services but as they stand now they are almost useless unless everyone talks above a whisper.

    I have tried padding the inputs with little change and none of the radios have any rapid call group options so I can't do much in the radio as to discriminator output levels.
    I got busy and kind of put these on the back burner but with all the rainy weather I should have some time to work with them a little more.

    I just thought I would see if anyone else had run into this problem before.

    Thanks in advance for any ideas I might have overlooked


    Wayne


  2. #2
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    Default

    Where are you picking off the RX audio? Read the manuals and tutorials about Flat, Preemphasized and Deemphasised audio from the Repeater Builder site.

  3. #3
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    RX Audio is on pin 2 of the accy connector and the PL Encode is using Pin 5 .
    These radios don't seem to have some the jumpers that are usually referenced. I have all the service manuals and will reference those again and double-check for any available jumpers in the event I might have missed one.
    Thanks for the references.

    Wt

  4. #4
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    Default

    I have multiple radios with the TP3200 repeater controller that work fine. One is on a GR1225 in NB and also works. I pull RX audio off of Pin 11 (Discriminator). Move the jumper to flat and you should be fine. Pin 2 is MIC audio ? Pin 5 should be flat TX audio and is where the TX from the controller should go. Your radio does have the 16 pin connector correct ?

    On the TP3200 I have this -

    TP3200 -> GM300

    P1 P13 12V +
    P2 P3 PTT
    P3 P11 Discriminator Audio
    P4 P8 COR
    P5 P5 TX Audio

    Also check your jumpers in the TP3200

  5. #5
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    Thanks for the reply. As best I remember the connections are the same as what you have. Only difference is I'm not 100% on the discriminator jumper. I will check on that and make sure.

    Thanks again

    Wt

  6. #6
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    I had a chance in between floods to look at one of the repeaters. The one with the Model 38 Panel. I pulled the manual for both the Zetron and the M10 receive radio. Turns out I had missed one of the jumper changes. I missed JU551. Changing that took care of my talk off problem. I have a little more background noise from the unmuted discriminator input to the Zetron but that may be normal as I have a MASTRIII with the same panel and it has some background white noise also, just not quite as bad. Thanks for jogging my memory with the suggestions!
    Help much appreciated

    Wt

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    sarguy1941 (Feb 17, 2020)