Williams Sound PFM PRO RCH Personal FM Listening System, 17 selectable channels 72-76 MHz, Operates up to 150' (46 m), Improves listening for individuals or groups
The rechargeable PFM PRO RCH 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.
Key Features17 selectable channels 72-76 MHz
Auxiliary input - broadcast any audio source
Operates up to 150' (46 m)
FM signal, compression, mute control
Improves listening for individuals or groups
SpecificationsEAR 041 EARPHONE
Nominal Impedance: 16Ω
Freq. Response: 20-20kHz
Max Power Input: 5mW
Sensitivity: 104 dB @ 1kHz
HED 021 HEADPHONE
Nominal Impedance: 32Ω
Freq. Response: 20-20kHz
Max Power Input: 100mW
Sensitivity: 110 dB @ 1kHz
MIC 090 MICROPHONE
Nominal Impedance: 1500Ω @ 1kHz
Freq. Response: 20-18kHz
Max Input Sound Level: 110dB SPL
Sensitivity: -56dB ± 3dB
PPA R37 FM RECEIVER
AFC Range: ± 120 kHz
Sensitivity: 2 µV at 12 dB
Input Overload: 100 mV
Frequency Response: 200 – 15 kHz
Signal-to-Noise Ratio: 65 dB min @ 100 uV
Receive Antenna: Integral with earphone/headphone cord
Audio Output: 35 mW max, peak into 16 ohms
PPA T46 TRANSMITTER
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
Signal-to-Noise Ratio: 65 dB
Transmit Antenna: Integral with microphone cord