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Throat vibration mic for vx-170 vx-177 vx-6R vx-7R

This is brand new Throat Vibration mic for Yaesu type radios with acoustic tube earpiece. 100% new, factory packed and never been used.
This is the best companion for outdoor communications with your HAM friends in war game, paintball, training, hunting, motorcycles. Perfect for security/surveillence purposes too.
With this 2-wire throat mic, you could get rid of the background noise when communicating with your partner. Different from the traditional microphone which transmits sound wave in the air, the throat mic absorbs vibrations from the throat and transmits them to the ham radio. The magic comes like this:
Mechanical vibration from throat => electric signal => transmitted to radio transceiver
Since the microphone transmits directly from your throat, it is not sensitive to your background noise. This is exceptionally ideal for usage in high ambient environment such as driving, riding motorcycles and bicycles.
With the best-quality transparent acoustic tube that could hardly be detected by people around you, this is also perfect for surveillance purposes and security at airports, casinos, crowd control at conventions and concerts, and any working environments requiring discreet communications. The throat mic could be easily hidden under the collars too.
Here are other exceptional features of the Throat-Vibration Mic:
Excellent Sound Quality: You may found cheaper throat mic in the market, but sound quality tells the difference. This throat vibration mic and earphone has excellent sound quality in both transmission and reception. We have tested a number of similar products and this one is simply the best in transmitting voices in their authentic tones.
Snug Fit Transparent Earbud: The earbud is designed in a way that fits your ear canal and it is hardly detected by people around you.
Fine Transparent Acoustic Tube: Connecting directly from the throat receiver, it is perfect for discreet & clear communications.
Finger PTT Switch: The back of the PTT attached with a velcro for attaching to your clothes. A velcro belt is provided in the package which could wrap the PTT around your finger for descret communications.
Length of wires: 90 cm / 3 ft from plug to PTT /VOX switch; 60 cm / 2 ft from PTT/VOX switch to throat mic; transparent tube extendable to 30 cm / 1 ft from the microphone;
Techincal data of earphone speaker
Transducer: moving coil dynamic speaker Impedance: 16 +/- 15% @ 1kHZ
Sensitivity: 120 +/- 3dB @ 1kHZ
Resonance freq (FO) 400HZ +/- 20%
Rated input power: 4mW Maximum input power: 10mW
Sensitivity: -58dB @ 1kHZ 3.3K 3V 0dB=1v/pa
Directivity: Omni-directional Frequency: 100Hz - 16000Hz
Standard operation voltage: 3V Current consumption: Max. 0.5mA S/N ratio: Min. 58dB @1kHZ
- 1x Throat Vibration mic with transparent acoustic tube
Throat vibration mic for vx-170 vx-177 vx-6R vx-7R