# Motorola 13 pin connector cable

**URL:** <https://forum.digirig.net/t/motorola-13-pin-connector-cable/2934>\
**Category:** Uncategorized\
**Tags:** motorola-mtx850, motorola-gp360, motorola-gp380, motorola-gp340\
**Created:** [January 10, 2024, 12:57am UTC](https://forum.digirig.net/t/motorola-13-pin-connector-cable/2934 "2024-01-10T00:57:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![K0TX](https://forum.digirig.net/user_avatar/forum.digirig.net/k0tx/32/3_2.png) [@K0TX](https://forum.digirig.net/u/K0TX)\
**Post date:** [January 10, 2024, 12:57am UTC](https://forum.digirig.net/t/motorola-13-pin-connector-cable/2934/1 "2024-01-10T00:57:33Z")

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GP340/360/380  
Tested on MTX850

Based on reverse engineering of the native speaker mic:

 ![motorola-13pin](https://forum.digirig.net/uploads/default/original/2X/0/0f501688753219e1b46306f6df8e1d0d1d3c7f22.jpeg)

We arrive at this audio/PTT cable for Digirig:

pin1 (SP+) → 3.5mm TRRS tip (RIG\_AFOUT)  
pin4 (MIC) → 3.5mm TRRS ring1 (RIG\_AFIN)  
pin5 (PTT) → 3.5mm TRRS ring2 (RIG\_PTT)  
pin6 (OPT1) → 3.5mm TRRS sleeve (GND)  
pin7 (GND) → 3.5mm TRRS sleeve (GND)

Additional info here:  
[Motorola GP3xx Series PinOut.pdf](https://forum.digirig.net/uploads/short-url/nukFrzoHGuAUfcUyloCqpbXykQZ.pdf) (437.6 KB)

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<div class="post-metadata">

**Author:** ![K0TX](https://forum.digirig.net/user_avatar/forum.digirig.net/k0tx/32/3_2.png) [@K0TX](https://forum.digirig.net/u/K0TX)\
**Post date:** [May 5, 2024, 3:52am UTC](https://forum.digirig.net/t/motorola-13-pin-connector-cable/2934/2 "2024-05-05T03:52:18Z")

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Renato HB9HSQ reports a successful build and shares additional details:

* * *

After several months of use, I can confirm that the cable works perfectly in conjunction with the Motorola GP3x0 and the DigiRig - well done!

I have also sent you some pictures and the connection diagram for the Hirose connector. Maybe this will help someone else. Please note that the Speaker+ pin of the Hirose is connected to pin 2 (Speaker-) of the GP3x0 - this confused me a bit at first, but it works. And I haven’t soldered the Hirose GND1 of pin 3 (option B+) anywhere.

 ![image](https://forum.digirig.net/uploads/default/original/2X/f/f6fe9e20c131ce857ed0a2e7f5bce21c5394ecc5.png)

 ![IMG_20240209_094048_877](https://forum.digirig.net/uploads/default/original/2X/d/ddcc176f1b331b72c630753802150b2986fabb3f.jpeg)

 ![IMG_20240503_083914_000](https://forum.digirig.net/uploads/default/original/2X/d/dbb596ca2a76f3a12abaa925a76b286cdb6553b6.jpeg)