6 pin mini-DIN male (PS/2 STYLE) connector at the helmet-side cable.
The Chatterbox noise-reducing headset uses a 6-pin mini-DIN male connector — the same physical shell as a PS/2 keyboard or mouse plug — at the helmet-side cable end, but with entirely proprietary pin assignments defined by Chatterbox USA (Maxon America Inc.). It is a stereo variant designed for use with the Chatterbox FRS X2 (14-channel, 462.550–462.725 MHz) and GMRS X1 portable FM transceivers, produced during the late 1990s and 2000s. Compared with the mono headset, this stereo version adds separate left and right speaker positive pins within the same 6-pin shell. No public technical standard governs the pin assignments; the data originates directly from Chatterbox USA.
| Pin | Name | Direction | Description |
|---|---|---|---|
| 1 | - Spk | - | Speaker Ground |
| 2 | + Mic | - | Microphone Positive |
| 3 | + R.Spk | - | Right Speaker Positive |
| 4 | - Mic | - | Microphone Negative |
| 5 | + L.Spk | - | Left Speaker Positive |
| 6 | N/C | - | No Connection |
Notes
- The connector reuses the PS/2 mini-DIN 6-pin physical shell but with proprietary signal assignments — a standard PS/2 keyboard or mouse cable cannot be substituted.
- Standard 6-pin mini-DIN plugs (as used for PS/2 peripherals) are mechanically compatible replacements for DIY cable repair; replacement speakers and microphones may be soldered directly to a new mini-DIN cable.
- The pinout data was received directly from Chatterbox USA; no independent manufacturer schematic has been published.
- A builder-discovered discrepancy has been noted: the documented
+ L.Spk(pin 5) and+ R.Spk(pin 3) may be reversed in practice — i.e.,+ L.Spkmay actually be pin 3 and+ R.Spkpin 5. This has not been independently confirmed by a manufacturer document, so the table above is preserved as supplied by Chatterbox USA. If you find the channels reversed on your unit, treat pins 3 and 5 accordingly.
Signals
- - Spk — shared ground return for both speaker channels
- + Mic — microphone positive (signal) lead; noise-reducing microphone element
- + R.Spk — right speaker positive; drives the right ear of the stereo headset (see note on possible L/R reversal)
- - Mic — microphone negative (return) lead
- + L.Spk — left speaker positive; drives the left ear of the stereo headset (see note on possible L/R reversal)
- N/C — no connection; pin 6 is unused in this headset variant
References
- Chatterbox FRS X2 Owner’s Manual — Chatterbox USA / Maxon America Inc.
- Chatterbox USA Official Manuals Page — Chatterbox USA / Maxon America Inc.