# Radio Shack HTX-212 Cable

**URL:** <https://forum.digirig.net/t/radio-shack-htx-212-cable/1360>\
**Category:** Uncategorized\
**Tags:** radio-shack-htx-212\
**Created:** [March 30, 2023, 4:15am UTC](https://forum.digirig.net/t/radio-shack-htx-212-cable/1360 "2023-03-30T04:15:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jorge.forero](https://forum.digirig.net/user_avatar/forum.digirig.net/jorge.forero/32/375_2.png) [@jorge.forero](https://forum.digirig.net/u/jorge.forero)\
**Post date:** [March 30, 2023, 4:15am UTC](https://forum.digirig.net/t/radio-shack-htx-212-cable/1360/1 "2023-03-30T04:15:48Z")

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Hello! I’m looking to build a cable for my old Radio Shack HTX-212 VHF mobile radio.  
I know the mic connection is an RJ45 and I’m looking for a pin diagram to connect my Digirig.  
Any help will be appreciated.

Jorge VE3EAD

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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:** [March 30, 2023, 3:12pm UTC](https://forum.digirig.net/t/radio-shack-htx-212-cable/1360/2 "2023-03-30T15:12:52Z")

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I found this pinout online for HTX-212:

![image](https://forum.digirig.net/uploads/default/original/2X/d/d8168a7a7f0aeb08a287e8551473a8781c9e55ba.png)

I see that hammadeparts has a [cable for another device](https://hammadeparts.com/shop-for-cables/ols/products/radio-shack-htx-212-rj-45-mic-plug-and-18-speaker-plug-to-5-pin-din-tnc-x-type), and from the picture it appears to be a typical arrangement for mobile radios where mic and PTT come from the mic jack and audio output comes from the speaker jack.

Digirig pinout should look something like this:

RJ45 pin 2 (GND) → 3.5mm TRRS sleeve (GND)  
RJ45 pin 5 (MIC) → 3.5mm TRRS ring 1 (RIG\_AFIN)  
RJ45 pin 6 (PTT) → 3.5mm TRRS ring 2 (PTT)

3.5mm TRS tip (SP) → 3.5mm TRRS tip (RIG\_AFOUT)  
3.5mm TRS sleeve (GND) → 3.5mm TRRS sleeve (GND)

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**Author:** ![jorge.forero](https://forum.digirig.net/user_avatar/forum.digirig.net/jorge.forero/32/375_2.png) [@jorge.forero](https://forum.digirig.net/u/jorge.forero)\
**Post date:** [March 30, 2023, 5:12pm UTC](https://forum.digirig.net/t/radio-shack-htx-212-cable/1360/3 "2023-03-30T17:12:08Z")

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Thanks! Great info!