MicroEar Wireless Mini VHF Receiver
Just insert microEar into your ear canal and you will receive information or prompting at distances up to a mile (depending on transmitter and radio conditions).
A VHF user-specified crystal-controlled receiver available in the range of 138 to 240MHz will receive signals up to several kilometers. Features include an automatic squelch circuit; a high sensitivity superheterodyne circuit which provides maximum receiver sensitivity; a self-adapting filter to reduce background noise; battery life of 15-30 hours and a volume control.
Features
| Name | microEar VHF |
| Type | Single conversion superheterodyne receiver |
| Frequency Range | 138 to 240 MHz |
| Modulation Type | NB FM max. 5 kHz deviation |
| Adjacent Channel Rejection | > 50 dB (150 kHz spacing) |
| System Sensitivity (including antenna) | E < 2 mV/m for 10 dB SINAD |
| Antenna Type | Internal/magnetic |
| Battery | zinc-air, type A10 (230) 1.3V |
| Battery | life 15 to 30 hours |
| Current Consumption (@ 1.2V) | 1.5 mA (squelch ON)
3.0 mA (squelch OFF) |
| Audio Bandwidth | 200 Hz to 4 kHz |
| Distortion THD | 3% max. (3 kHz FM dev. @ 1 kHz) |
Audio Output Power
@ 1kHz = f mod and 3 kHz deviation | Vol High: 99 dB SPL
Vol Low: 89 dB SPL
Frequency response: The acoustical frequency response is shaped for maximum speech comprehensibility. |
| Speaker Type | Electromagnetic |
| Case Size | 17.5 mm length
11 mm wide diameter
5 mm narrow diameter |
| Weight | 1.4 gr. (battery included) |
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