DISCO Connect · M9
PTT for Motorola APX / GCAI (M9)
Classic Motorola APX and many MOTOTRBO GCAI radios use the M9 connector. Constant Able M9 auto-matches headset impedance so you pick the radio plug once.
One radio interface per Constant Able unit · U-174 headset auto impedance · Made in USA
Recommended product
Constant Able M9 is the DISCO32 push-to-talk for Motorola GCAI (APX 6000/7000/8000 class, many XPR GCAI). One radio interface per unit — not a universal radio PTT.
Example radios
APX 6000, APX 7000, APX 8000, SRX 2200, XPR 6550/7550 GCAI class, and related GCAI portables.
FAQ
Is this one PTT for every radio?
No. Constant Able M9 is built for this connector family only. Other radios need a different CA model — use DISCO Connect to match.
Will it work with my headset?
Headset side is standard U-174/U with auto dynamic/electret sensing. Swap headsets freely on the same PTT. European “Peltor wired” is handled by Constant Able.
Need dual radios?
Dual mono often needs two PTTs. Stereo platforms are a different path. Open Connect with dual-comm or email help@disco32.com.