# Cables for Elecraft K2

**URL:** https://forum.digirig.net/t/cables-for-elecraft-k2/1147
**Category:** Uncategorized
**Tags:** elecraft-k2
**Created:** [February 20, 2023, 10:10pm UTC](https://forum.digirig.net/t/cables-for-elecraft-k2/1147 "2023-02-20T22:10:26Z")
**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: [February 20, 2023, 10:10pm UTC](https://forum.digirig.net/t/cables-for-elecraft-k2/1147/1 "2023-02-20T22:10:26Z")

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Cabling for Elecraft K2 collects the signals from multiple connectors:

- MIC/PTT from the aviation type connector (presumably GX16-8) in front
- Speaker from the headphone socket next to the mic connector in front
- CAT control from DB9 connector in the back labeled AUX I/O

# Audio Cable

GX16-8F pin #1 (MIC) → 3.5mm TRRS ring1 (RIG\_AFIN)  
GX16-8F pin #5 (PTT) → 3.5mm TRRS ring2 (PTT)  
GX16-8F pin #6 (GND) +  
GX16-8F pin #7 (MGND) → 3.5mm TRRS sleeve (GND)

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

# Serial Cable

DB9-M pin #2 (TXD) → 3.5mm TRRS ring1 (RIG\_TXD)  
DB9-M pin #3 (RXD) → 3.5mm TRRS tip (RIG\_RXD)  
DB9-M pin #5 (GND) → 3.5mm TRRS sleeve (GND)

Serial uses RS-232 levels.

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<div class="post-metadata">

### Author: ![wa2dsf](https://forum.digirig.net/letter_avatar_proxy/v4/letter/w/ed8c4c/32.png) [@wa2dsf](https://forum.digirig.net/u/wa2dsf)
#### Post date: [August 27, 2026, 11:56pm UTC](https://forum.digirig.net/t/cables-for-elecraft-k2/1147/2 "2026-08-27T23:56:25Z")

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> [@K0TX](#):
>
> GX16-8F

thanks Denis. i’ll try it when i can. my brother would like it if it works (W2XS). -paul (WA2DSF)