Ear-Vibration Earbone Earpiece Headset for SP320 SP330 SP340

PRO Ear vibration cable control

Description

This new Ear-Vibration 2-in-1 Speaker/Mic is designed for professional use. The performance of this new model is greatly improved comparing to the ordinary Ear-vibration 2-in-1 Speaker/Mic.

Apart from being a headphone, the earpiece also translates the vibration of your earbone into an electric signal and transmits it through your transceiver to another two-way radio. With this 2-in-1 speaker/mic, you can get rid of a separate microphone.

The mechanism works as follows:

Mechanical vibration from earbone => electric signal => transmitted to radio transceiver

Since the speaker/mic is hidden in your ear canal, it is not sensitive to any background noise. This is exceptionally ideal for usage in high ambient environment such as driving, riding motorcycles and bicycles.

Without a separate microphone that could be easily detected by people around you, this is also ideal for surveillance purposes and security at airports, casinos, crowd control at conventions and concerts, and other working environment requiring discreet communications.

The sensitivity of the newly designed microphone is greatly improved to cover a much wider range of frequency. Graph 1 shows that an ordinary speaker/mic best performs in the range of 1400 to 1800Hz while the newly designed model shown in Graph 2 provides execellent performance in the range of 900 to 3900Hz. With a much more sensitive microphone, transmission becomes clearer and distortion is greatly reduced.

Specifications:

Length of cable: 119 cm 3’11” from plug to earphone; 116 cm 3’10” from plug to PTT;
A metal clip enables you to secure the mic/speaker on clothes;
Weight: 32 g
Technical data of Microphone:
Type: piezoelectric accelerometer;
Work voltage: 2.5-10V DC;
Impedance: 4.7K Ohm
Technical data of Speaker:
Power rating: Normal 20mW, Max 40 mW;
Resistance: 32 Ohm +/- 15% at 1KHz 60mW sine wave;
Sound pressure level: 107.3dB +/- 3dB at 1KHz 60mW with 142F coupler.

Fit for model

Maxon SP14, SP130, SP120, SP130, SPI140, SP300,
SP310, SP320, SP330, SP340, SL25, SL55, SL55+, SL100K
Midland –
All 2-Pin
75-785, 75440, GTX-200, GTX-250, GTX-300,
GTX-325, GTX-400, GTX-444, GTX-450,
G-225, G-227, G-300, GXT500VP

PACKAGE CONTAIN
1 x PRO Ear vibration cable control

Author: 409shop

When shopping for a ham radio online, you may often face a dilemma: buy from a reputable site and pay more, or risk buying from a not-so-trustworthy site to get the lowest price. With 409shop, you don't have to choose between low prices and a safe shopping experience. You can have it all when you shop with us. 409shop is a well-known online store specializing in Two-way Radios, Radio Accessories, FM Transmitters, Mobile Radio Transceivers, CB Linear Amplifier, frequency counter ,Antenna ANALYZER,lShortwave Radios, and Oscilloscopes. Meanwhile, to satisfy more demands of different customers, 409shop also offers headphones, Hi-Fis, Satellite Finders and Bluetooth Devices.

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