The connector you can buy from Digi-Key
Digi-Key Part Number 104422-1-ND,
Manufacturer: TE Connectivity 104422-1
The pins for the connector
Digi-Key Part Number A3007-ND
Manufacturer: TE Connectivity 1-87309-3
Back End View of Connector
| ← Latch | ||||||||
| 15 | 13 | 11 | 9 | 7 | 5 | 3 | 1 | |
| 16 | 14 | 12 | 10 | 8 | 6 | 4 | 2 | |
| GTX Mobile Accessory Jack Pins and Signals | ||
| Pin # | Signal Name | Description and Usage |
| 1 | EXT SPKR - | Connect to an external speaker with pin 16 |
| 2 | EXT MIC AUDIO | Microphone-level audio input |
| 3 | EXT PTT | Push-to-talk input |
| 4 | EXT ALARM | Active low output to drive a relay |
| 5 | FLAT TX AUDIO | Line-level audio input |
| 6 | SCI DATA IN | Not used |
| 7 | GROUND | Ground for PTT and audio - NOT FOR SPEAKER |
| 8 | SCI DATA OUT | Not used |
| 9 | EMG SWITCH | Low input activates alarm functions in radio |
| 10 | IGNITION CTRL | Must be pulled high to let radio turn on |
| 11 | FLAT RX AUDIO | Flat receive audio output |
| 12 | GP I/O | Not used |
| 13 | INT SPKR | Connect to pin 16 to activate internal speaker |
| 14 | HOOK | Low input to activate RX PL/DPL |
| 15 | RSSI BUF | Analog output of rcvd signal strength: 1.5 - 4.5 VDC |
| 16 | EXT SPKR + | Connect to an external speaker or pin 13 |
GTX1 works with early model GTX
GTX2 works with late model and LCS2000
Example late model with ext speaker
