The M-175 personal transmitter is a professional quality, compact body-worn transmitter designed for reliable one-way remote communication. This transmitter incorporates the latest digital and analog technologies to produce high quality sound with low residual noise, wide dynamic range, and extended frequency response for the most natural sound possible.
The aux input on the M-175 allows earphone level audio signals for portable media players to be transmitted. When aux input signal is present with the mic On/Off switch turned On, the aux input signal attenuates 6 dB to prioritize the speaker’s voice.
Compatable with the PR-75 AutoSmart-Tuning Receiver
Microphone input impedance for electret type microphone - 3k Ω
Aux/Line input impedance - 10k Ω at 0 dB nominal
Microphone - Micro-mini 2.5 mm mono (locking or non-locking)
Auxiliary - Mini 3.5 mm Stereo
Audio - Tip and Sleeve
Battery Charging - Tip and Sleeve
External 9V power - Ring and Sleeve
Controls and Indicators:
Synthesized channel selection switches
Power On/Off switch
Microphone On/Off switch
Audio input gain control
Modulation voice level indicator
Antenna System: Body-worn microphone cord or whip antenna plugged directly into microphone connector when auxiliary input is used
Frequency Response: 80 Hz to 10 kHz
Modulation: 10 kHz deviation companded
R.F. Power Output: 40 mW to the antenna system
Out-of-Band Emissions: Better than 50 dB below carrier
Weight: 4 ounces (110 grams)
Dimensions: 1 1/6” x 2 1/2” x 3 1/4” (27 mm x 57 mm x 83 mm)
9 V alkaline for up to 14 hours of operation
9 V NIckel-Metal Hydride rechargeable for up to 7 hours
Current Drain: 17 mA constant current
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