
Description
The FM R37 features seek-button channel selection with access to 17 pre-set, wideband frequencies (72-76 MHz). Offers sleep mode, low-battery indicator and stereo headphone jack. Compatible with all Williams Sound 72-76 MHz wide-band transmitters. Digitally synthesized for exceptional audio clarity and stability. Versatile 3.5mm stereo/mono jack allows for a variety of earphone/headphone options, and is neckloop/telecoil-equipped hearing aid compatible.
System Includes:
- (1) PPA R37N Receiver
- (1) EAR 022 Surround Earphone
- (1) BAT 001-2 AA Alkaline Battery
| FM R37 | |
| Dimensions | 4.1" x 2.85" x 1.38" (104 x 72 x 35mm) |
| Weight | 4.6oz (130g) with batteries. 2.6oz (73g) without batteries |
| Color | Black |
| Battery Type | (2) AA Alkaline or 2 x AA NiMH |
| Battery Life | Two (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs Two (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs |
| Current Consumption | 52mA nominal |
| Temperature Range | - 0 to 50C |
| Channels | 17, accessed via seek button in battery compartment |
| Operating Freq. | 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 |
| Intermediate Freq. | 75 kHz |
| FM Deviation | 75 kHz |
| De-Emphasis | 75 µS |
| LED Indicator | Power: Green; Low Battery: Flashes Green |
| 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 |
| Receive Antenna | Integral with earphone/headphone cord |
| Audio Output | 35 mW max, peak into 16 ohms |
| Output Connector | 3.5 mm stereo/mono phone jack |
| 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 |
| Approvals | FCC, Industry Canada, RoHS, WEEE |
| Warranty | Lifetime PLUS Limited Warranty, 90 Days on most accessories |
The FM R37 features seek-button channel selection with access to 17 pre-set, wideband frequencies (72-76 MHz). Offers sleep mode, low-battery indicator and stereo headphone jack. Compatible with all Williams Sound 72-76 MHz wide-band transmitters. Digitally synthesized for exceptional audio clarity and stability. Versatile 3.5mm stereo/mono jack allows for a variety of earphone/headphone options, and is neckloop/telecoil-equipped hearing aid compatible.
System Includes:
- (1) PPA R37N Receiver
- (1) EAR 022 Surround Earphone
- (1) BAT 001-2 AA Alkaline Battery
| FM R37 | |
| Dimensions | 4.1" x 2.85" x 1.38" (104 x 72 x 35mm) |
| Weight | 4.6oz (130g) with batteries. 2.6oz (73g) without batteries |
| Color | Black |
| Battery Type | (2) AA Alkaline or 2 x AA NiMH |
| Battery Life | Two (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs Two (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs |
| Current Consumption | 52mA nominal |
| Temperature Range | - 0 to 50C |
| Channels | 17, accessed via seek button in battery compartment |
| Operating Freq. | 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 |
| Intermediate Freq. | 75 kHz |
| FM Deviation | 75 kHz |
| De-Emphasis | 75 µS |
| LED Indicator | Power: Green; Low Battery: Flashes Green |
| 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 |
| Receive Antenna | Integral with earphone/headphone cord |
| Audio Output | 35 mW max, peak into 16 ohms |
| Output Connector | 3.5 mm stereo/mono phone jack |
| 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 |
| Approvals | FCC, Industry Canada, RoHS, WEEE |
| Warranty | Lifetime PLUS Limited Warranty, 90 Days on most accessories |
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Your home for all things pro audio—backed by expertise and experience. Connect with us today.

