#### Jay Ashworth

##### Well-Known Member
Is it possible to build (or buy) a short adapter cord (a foot or so) that takes the A4F on my Clearcom PH-88, and lets me plug into the A5F on an RTS pack? So an A4M plug to A5M jack, wired properly?

Or, for electrical reasons, would I have to get an A5M RTS headset, and adapt the other way?

#### themuzicman

##### Well-Known Member
Assuming you're talking 4 and 5 pin XLR headsets. No issues, you can go either way. The 5th pin is for stereo headset, the Telex packs have the ability to send Program to the Left or Right side only. It's just a straight adapter, you leave Pin 5 floating.

If you had a 2-eared headset and were flipping between Clearcom and RTS systems frequently enough and really wanted to use the Telex stereo features, I'd probably wire up the headset with a 5-pin and make a 5-pin to 4-pin adapter.

#### Jay Ashworth

##### Well-Known Member
Gotcha. Is that anyone's stock adapter, you think? Or will I have to find the pinouts and build it myself?

#### steine

##### Active Member
Perhaps this one?

#### Jay Ashworth

##### Well-Known Member
Just the thing, yep. Thanks.

#### themuzicman

##### Well-Known Member
Gotcha. Is that anyone's stock adapter, you think? Or will I have to find the pinouts and build it myself?
It’s just a straight adapter - 1:1 wiring with pin 5 floating if you’re going to keep the PH-88 on it’s 4-wire connector. $35 + Shipping for the option above, when you could build it for like$12.

#### Jay Ashworth

##### Well-Known Member
Yeah, but it's a production tool, and I'm a lousy solderer.

On the other hand, I've never actually needed to plug my headset into an RTS panel...