PPA R38-20

20-pack FM Receiver Bundle

Product Highlights

  • Simple, user-friendly design
  • Meets ADAAG guidelines
  • Lifetime PLUS Limited Warranty. 90 days on accessories.
  • Made in the USA
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Flexible and simple. The PPA Select FM receiver features easy-to-use, seek-button channel selection with access to 17 pre-set wideband frequencies between 72-76 MHz. Compatible with Williams Sound 72-76 MHz transmitters: PPA T46, PPA T45, PPA T45NET, PPA T27. Digitally synthesized for even greater audio clarity and stability. A versatile 3.5mm stereo/mono jack allows for a variety of earphone and headphone options, and is neckloop/telecoil-equipped-hearing-aid compatible.

NOTE: The PPA Select Receiver requires a transmitter operating on 72-76 MHz. The PPA Select is approved by the FCC for operation in U.S. Markets. The receiver cannot be used in all countries. Check with your government´s radio regulations for 72-76 MHz operation.

System Includes

(20) PPA R38N Receivers
(20) BAT 001-2 AA Alkaline Batteries
(20) EAR 022 Surround Earphones

All items can be purchased individually

Ppa r38-20 nb


  • Seek-button access to all 17 wideband frequencies in the 72-76 MHz bandwidth
  • Channel-lock capability
  • Battery-saving sleep mode
  • Low-battery indicator
  • Field tunable


BAT 001-2

Alkaline, 1.2 Volt

EAR 022


Around-ear speaker


3.5mm mono



Driver Size

23 mm

Nominal Impedance


Freq. Response

20 - 20kHz



Max Power Input

30 mW


118 dB @ 1kHz

PPA R38N Architectural and 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 3.5mm stereo jack to accommodate stereo or mono low impedance earphones, headphones and neckloops. The receiver shall have a power button that is backlit indicating power is on. The receiver shall receive 17 preset wideband channels between 72-76MHz. Channel selection shall be made in the menu. The receiver shall have channel-lock capability.

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 recevier 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 35mW at 16Ω with an earbud type earphone. The systems audio frequency response shall be 200Hz to 15kHz ± 3dB and the signal to noise ratio shall be 65dB min. The receiver sensitivity shall be 2µV or better at 12dB Sinad with squelch defeated. The receiver shall accept up to ±75kHz 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, 90 Days on most accessories.

This receiver model shall be the Williams Sound model PPA R38N.



  4.1" x 2.85" x 1.38" (104 x 72 x 35mm)


  4.6oz (130g) with batteries. 2.6oz (73g) without batteries


  Black/Silver.  Black ABS Plastic case with Aluminum faceplate.

Battery Type: 

  (2) AA Alkaline or (2) AA NiMH Rechargeable


Battery Life: 

  (2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs.

  (2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs.

Current Consumption: 

  52mA nominal

Operating Temp. Range: 

  32° – 122°F  (0° to 50°C)


  17 Wideband, accessed via menu

Operating Frequencies: 

  72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz*

FM Deviation: 

  75 kHz


  75 µS

Display Screen: 

  1" OLED

Power Indication: 

  Power button, backlit green.

  Good battery strength - glows solid.  Low battery - flashes.


  2 µV at 12 dB Sinad with squelch defeated

Input Overload: 

  100 mV

Frequency Response: 

  200 Hz – 15 kHz, ±3dB


  FM, +/- 75 kHz peak deviation

Signal-to-Noise Ratio: 

  Minimum 65 dB @ 1.0V

Receive Antenna: 

  Integral with earphone/headphone cord

Audio Output: 

  35 mW max at 16 Ω

Headphone Connector: 

  3.5 mm stereo jack, mono output for stereo or mono earphones/headphones

Supplied Earphone: 

  Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 Ω

Power Save Mode: 

  Enters sleep mode after approximately 3 minutes of no RF signal


  FCC, Industry Canada, RoHS, WEEE


  Lifetime PLUS Limited Warranty, 90 Days on most accessories.

Other Models

PPA R37-20

Accessories for 20-pack FM Receiver Bundle [PPA R38-20]

All Williams Sound headphones and earphones are compatible with this product.

BAT 001-2 Two AA alkaline batteries

BAT 026-2 Two AA NiMH rechargeable batteries

CHG 3502 Body-pack charger, 2-bay

CHG 3512 Body-pack charger, 12 bay

CHG 3512 PRO Body-pack charger, 12 bay, with case

EAR 022 Surround Earphone


Download/View Name Type Language
FM Frequency/Channel Chart Technical Bulletins English


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