Constant Able HA2 is the Harris 9-pin UDC PTT for XL-200 / XL-185 / XG-100. XG-75 and P5500 15-pin UDC is HA1 — a different plug.
Auto-Sensing
The Intelligence Core
Push-to-talks aren’t just an accessory—they’re the core of comms. The Constant Able uses embedded proprietary algorithms to decide, rewire, and adjust gain automatically.
Microphone Support
-
Dynamic (Low Impedance / Mil-Spec)
-
Electret (High Impedance / Civilian)
-
150 Ohm Variants
Wiring Handling
-
US NATO Standard
-
Peltor Wired (EU Standard)
-
No switches. No reprogramming.
Radio Interface: Harris XL / Unity
Designed for the modern Harris XL series and Unity interfaces.
Compatible Models:
-
XL-200P (Multi-band)
-
XL-185P / XL-150P
-
XG-100P (Unity)
Proven Compatibility
Field-proven with professional comms gear:
Peltor Comtac II–VIII
Ops-Core AMP
MSA Sordin
OTTO NoizeBarrier
N-Ear 360
Connectors: U-174/U (NATO J11) or U-384 (Dual Comm Split Audio*) — If your headset downlead has red rings, you will require the TP-105 O-ring.
Mission Specs
-
Zero batteries required
-
IP67 Sealed (Waterproof/Dustproof)
-
Integrated hot mic shroud
-
Rotating ambidextrous clip
-
Buy American Act Compliant
Compatibility Note
DISCUS is not compatible in-line with Constant Able. Do not stack DISCUS and Constant Able. Use Constant Able alone, or DISCUS on a U-94 / dynamic-mic path.
If the downlead on your headset has red rings, you will require the TP-105 O-ring as an addition to this PTT. Red rings typically indicate the U-384 (Dual Comm Split Audio*) configuration.
Warranty
DISCO32 limited warranty — 1 year from original purchase for defects in materials and workmanship under normal use. Support starts with a troubleshooting ticket at help@disco32.com. Valid claims are repaired or replaced per store policy. Same terms for Constant Able, U-94, and MSM sold by DISCO32.
Full store policy.
