Constant Able HA2 is the L3Harris 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
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Dynamic (Low Impedance / Mil-Spec)
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Electret (High Impedance / Civilian)
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150 Ohm Variants
Wiring Handling
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US NATO Standard
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Peltor Comtac wired (EU standard)
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No switches. No reprogramming.
Radio Interface: L3Harris XL / Unity
Designed for the modern L3Harris XL series and Unity interfaces.
Compatible Models:
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XL-200P (Multi-band)
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XL-185P / XL-150P
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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
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Zero batteries required
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IP67 Sealed
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Integrated hot mic shroud
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Rotating ambidextrous clip
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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.
