Noise Cancel Throat Mic Earpiece Large PTT button for Motorola radio HT750 HT1250 HT1250LS HT1550 T1550XLS GP328 GP338 GP329


Features:

--Two sensors design to make the quality of sound more true and clear

--The high quality transparent tube is not easy to be detected

--extended 3.5mm earphone jack inlcuded,

-- Hear your HAM friends clearly even in noisy environment as your voice is transmitted via vibration of your throat

-- Heavy duty PTT

-- The elastic Velcro strap that suits head sizes from 12 to 25 inches. You can adjust the size freely.



Specifications:

Speaker:

-Sensitivity: 120 +/- 3dB &1kHZ
-Transducer: moving coil dynamic speaker Impedance: 32ω +/- 15% &1kHZ
-Resonance freq (FO) 400HZ +/- 20%
-Rated input power: 200mW Maximum input power: 500mW


Microphone:

-Sensitivity: -37.5+/-2dB &1kHZ 2.2Kω 3V 0dB=1v/pa
-Impedance: Max. 2.20kω &1kHZ
-Directivity: Omni-directional Frequency: 100Hz - 16000Hz
-Max operation voltage: 10V
-Standard operation voltage: 3V;
-Current consumption: Max. 0.5mA;
-S/N ratio: Min. -56dB &1.1kHZ


Working with below Motorola Handheld radios:

GP140,GP320,GP328,GP329, GP338,GP339GP340,GP360, GP380,, GP640,GP650 P680, GP1280

MTX850,MTX850LS,MTX900?MTX950, MTX960, MTX8250, MTX8250LS,MTX9250

HT750,HT1250,HT1250LS,HT1550, T1550XLS,

PRO5150, PRO5350,PRO5450,PRO5550, PRO5750, PRO7150, PRO7350 PRO7450, PRO7550, PRO7750 PRO9150

PTX700,PTX760,PTX780