Legacy Series · U-94
U-94 — Motorola M2 MultiPin
U-94 push-to-talk for Motorola multipin HT-class radios (M2 interface).
U-174 Headset
Radio Interface: Motorola M2 MultiPin
Connector: Motorola M2 multipin accessory connector
Verify your radio connector visually before ordering. Headset side is standard NATO U-174/U (TP-101). U-384/U (TP-105 / red rings) needs the TP-105 O-Ring adapter.
Compatible Radios
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📻lunce (HD1, RT29, RT82)
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📻Full Model Compatibility GP: GP140, GP240, GP280, GP320, GP328, GP338, GP340, GP360, GP380, GP640, GP680 HT: HT-750, HT-1250, HT-1550 MTX: MTX850, MTX950, MTX8250, MTX9250 PRO: PRO5150, PRO5350, PRO7150, PRO7350, PRO7550, PRO9150
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📻Other: PR860, Retevis HD1, RT29, RT82
Headset & Microphone
Select the correct impedance variant for your headset microphone:
Dynamic (Low Impedance)
Military headsets — Ops-Core AMP, Peltor ComTac, MSA Sordin, OTTO dynamic.
Electret (High Impedance)
Civilian headsets, many earpieces, Earmor / Howard Leight style mics.
Not sure? Constant Able auto-detects impedance. Or use the PTT selector.
Mil-Spec Build
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⚡Genuine mil-spec U-94/A assembly
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🌊IP67 sealed (waterproof / dustproof)
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🔄Rotating blackened stainless clip
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🇺🇸Assembled in USA · BAA compliant
Compatible radios (HT750/1250 Multipin)
Built for the HT750/1250 Multipin accessory interface used on these manufacturer radio models:
- HT1250
- HT750
- HT1550
- GP320
- GP338
- GP380
Platform names: Motorola multipin, U-94/A.
Legacy U-94/A push-to-talk with U-174/U headset jack. Confirm electret vs dynamic headset requirements for your radio. Match by physical plug and radio model—not third-party chart codes alone.
