
Houses of Worship • Schools • Auditoriums • Conference Rooms •Theaters
PPA R37-8
8-channel 72 MHz FM Receiver
SPECIFICATION DATA
The NEW PPA R37-8 FM receiver features 8 pre-set wideband frequencies between 72-76 MHz. All 8 channels have been frequencyallocated for simultaneous use - making it popular for language interpretation applications. Digitally synthesized for even greater
audio clarity and stability, the PPA R37-8 also oers a battery-saving Sleep Mode. A versatile 3.5mm stereo/mono jack allows for a
variety of earphone and headphone options, and is neckloop compatible to work with telecoil-equipped hearing aids. The stylish,
impact-resistant PPA R37-8 receiver is compatible with any Williams Sound transmitter operating on the 72-76 MHz bandwidth. The
PPA R37-8 includes two AA alkaline batteries for up to 50 hours of long-lasting operation.
© 2019, Williams AV, LLC MCAT 229B

PPA R37-8 FM Receiver
PPA R37-8 Receiver Specifications
ON/OFF, VOLUME
CONTROL DIAL
CHANNEL
SELECTOR
KNOB
"ON"/LOW
BATTERY/
SLEEP MODE
INDICATOR
HEADPHONE
JACK
Dimensions: 4.1” x 2.85” x 1.38” (104 x 72 x 35 mm)
Weight: 4.6 oz (130 g) with batteries. 2.6 oz (73 g) without batteries
Color: Black
Battery Type: (2) AA Alkaline or
Battery Life:
Current Consumption: 42 mA nominal
Temperature Range: – 0 to 50 °C
Channels: 8, accessed via rotary knob on top of unit
Operating Frequencies: 72.1, 72.3, 72.6, 72.8, 74.7, 75.4, 75.7, 75.9 MHz
Modulation: FM, +/- 75 kHz peak deviation
De-Emphasis: 75 µS
LED Indicator: Power: Green; Low Battery: Flashes Green; Sleep mode: Fade-on,Fade-o
Sensitivity: 2 µV at 12 dB Sinad with squelch defeated
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 Ω
Output Connector: 3.5 mm stereo/mono phone jack
Included Earphone: Earbud-type with foam cushion, 3.5 mm plug, 32 Ω
Sleep Mode:
Approvals: FCC, Industry Canada, RoHS, WEEE
Warranty: Lifetime PLUS Limited Warranty (90 Days on most accessories)
(2) x AA NiMH
Two AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs, or
two AA rechargeable NiMH batteries (BAT 026-2), 1500 mAh, approx. 32 hrs
Enters sleep mode after approximately 6 mins of no RF signal,
returns to normal operation when a transmitter is re-established on same
channel
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

PPA Select™ FM Receiver
Architectural/Engineering Specifications:
The receiver shall be encased in black, PC/ABS impact-resistant
plastic with a hinged battery door.
The receiver shall be a body-pack style and include a detachable
belt-clip for hands-free operation.
The receiver shall have a 3.5 mm stereo jack to accommodate
stereo or mono, low impedance earphones, headphones and
neckloops.
The receiver shall have a combination volume control with power
on/o rotator dial. It shall have a green LED indicating battery and
system status codes.
The receiver shall have access to 8 preset wideband channels
between 72-76 MHz. Channel selection shall be made by rotating a
channel selector knob.
The receiver shall have a slide switch inside the battery
compartment to select disposable Alkaline or NiMH rechargeable
battery operation. It shall have charger contacts on the bottom of
the receiver for use with Williams Sound drop-in chargers CHG 3512
and CHG 3502.
The receiver shall operate up to 50 hours with two disposable AA
Alkaline batteries (BAT 001-2) and up to 32 hours with two AA NiMH
rechargeable batteries (BAT 026-2).
The receiver shall provide a maximum output of 35 mW at 16 ø with
an earbud type earphone. The receiver’s audio frequency response
shall be 200 Hz to 15 kHz ± 3 dB and the signal to noise ratio shall
be 65 dB min. The receiver sensitivity shall be 2 µV or better at 12
dB Sinad with squelch defeated. The receiver shall accept up to ±75
kHz FM deviation and have a 75 µs de-emphasis time constant.
The receiver shall have FCC, Industry Canada approvals and be
compliant with RoHS and WEEE regulations. The receiver shall be
covered by a Lifetime PLUS Limited Warranty.
This receiver model shall be the Williams Sound model PPA R37-8.
Domestic Sales
Williams AV
10300 Valley View Rd
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252
FAX: 952-943-2174
Email: info@williamsav.com
Web: www.williamsav.com
International Sales
International Sales Department
Williams AV
10300 Valley View Rd
Eden Prairie, MN 55344 USA
Phone: +1 952 943 2252
Fax: +1 952 943 2174
Email: info@williamsav.com
Web: www.williamsav.com
info@williamsav.com / www.williamsav.com
800-843-3544 / INTL: +1-952-943-2252
© 2019, Williams AV, LLC MCAT 229B