Product Overview
Williams Sound PFM PRO Personal FM Listening System, 17 Selectable Channels, 72-76 MHz Operating Frequencies, FM Signal, Compression, Mute Control, Operates up to 150 Feet
Williams Sound PFM PRO Personal FM Listening System; 17 selectable channels; 72-76 MHz operating frequencies; FM signal, compression, mute control; Operates up to 150' (46 m)
The PFM PRO deliver superior audio directly to the ear, enhancing sound at home, work, or school – anywhere background noise or distance from the source makes listening difficult. A versatile 3.5mm jack allows for a variety of earphones and headphone options, and is compatible with neckloops and telecoil-equipped hearing aids (not included with system).
Key Features
- 17 selectable channels
- 72-76 MHz operating frequencies
- Auxiliary input - broadcast any audio source
- FM signal, compression, mute control
- Operates up to 150' (46 m)
- Improves listening for individuals or groups
Specifications
- PPA R37 Transmitter
- Intermediate Freq.: 75 kHz
- FM Deviation: 75 kHz
- De-Emphasis: 75 µS
- AFC Range: ± 120 kHz
- Sensitivity: 2 µV at 12 dB Sinad with squelch defeated
- Input Overload: 100 mV
- Frequency Response: 200 – 15 kHz
- Modulation: FM, +/- 75 kHz peak deviation
- Signal-to-Noise Ratio: 65 dB min @ 100 uV
- Audio Output: 35 mW max, peak into 16 ohms
- Earphone: Earbud-type with foam cushion, 3.5 mm plug, 32 ?
- Auto Shut-off: Enters sleep mode after approx 6 mins of no RF signal
- PPA T46 Receiver
- Stability: ± .005%, frequency synthesized, crystal reference, PLL
- Modulation: Wide-band FM, 75 kHz peak, 75 µS pre-emphasis
- RF Output: 80 mV/m at 3 m
- Frequency Response: 180 Hz to 13 kHz, ± 3 dB at 1% max. THD
- Signal-to-Noise Ratio: 65 dB
- Mic Input: 3.5 mm mono jack with electret mic bias, adjustable gain with 25 dB range
- Aux Input: 2.5 mm stereo jack, adjustable gain with 60 dB range
