Rechargeable Personal FM Listening System
Last updated Nov 1, 2026 · 2 entries in Page history
The Williams AV PFM PRO RCH is a rechargeable personal FM listening system with a PPA T46 transmitter and a PPA R37 receiver, 17 selectable channels on 72-76 MHz and a range of 150 ft.
As the source prints itFeatures17 selectable channels 72-76 MHz
Auxiliary input — broadcast any audio source
FM signal, compression, mute control
Improves listening for individuals or groups
Lifetime PLUS Limited WarrantyPress to see it in the sheet ↓
As the source prints itFeatures17 selectable channels 72-76 MHz
Auxiliary input — broadcast any audio source
FM signal, compression, mute control
Improves listening for individuals or groups
Lifetime PLUS Limited WarrantyPress to see it in the sheet ↓
As the source prints itRange150 ft/45 mPress to see it in the sheet ↓
As the source prints itBattery LifeTwo (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs
(2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrsPress to see it in the sheet ↓
- Part number or model
- PFM PRO RCH
- Catalog number
- Not assigned yet
- Searched on PriceQ as
- “Williams PFM PRO RCH”
Specifications
89 fields, as the source states them
System Includes
- System Includes
- (1) FM Body-pack Transmitter (PPA T46) (1) FM Body-pack Receiver (PPA R37) (1) Single Mini Earphone (EAR 041) (1) Folding Headphone (HED 021) (1) Audio Input Cable (WCA 087) (1) Lavalier Microphone (MIC 090) (2) AA Rechargeable NiMH Batteries (BAT 026-2) (1) System Carry Case (CCS 043) (1) Dual Drop-in Charger (CHG 3502)
Features
- Features
- 17 selectable channels 72-76 MHz Auxiliary input — broadcast any audio source FM signal, compression, mute control Improves listening for individuals or groups Lifetime PLUS Limited Warranty
BAT 026-2
- BAT 026-2
- NiMH, 1.2 Volt, 1800 mAh
EAR 041
- EAR 041: Style
- Single, in-ear, isolation earphone
- EAR 041: Plug
- 3.5mm mono
- EAR 041: Cord
- 39"
- EAR 041: Driver Size
- 10 mm
- EAR 041: Nominal Impedance
- 16Ω
- EAR 041: Freq. Response
- 20 - 20kHz
- EAR 041: Weight
- 6g
- EAR 041: Max Power Input
- 5 mW
- EAR 041: Sensitivity
- 104 dB @ 1kHz
- Replacement Silicone Tip
- EAR 043 (0ne pair)
HED 021
- HED 021: Style
- Mono, folding headphone
- HED 021: Plug
- 3.5mm mono
- HED 021: Cord
- 39"
- HED 021: Driver Size
- 30 mm
- HED 021: Nominal Impedance
- 32Ω
- HED 021: Freq. Response
- 20 - 20kHz
- HED 021: Weight
- 52g
- HED 021: Max Power Input
- 100 mW
- HED 021: Sensitivity
- 110 dB @ 1kHz
- Replacement Pads
- HED 023 (one pair)
MIC 090
- Element
- Electret-Condenser
- Pick-Up Pattern
- Omni-directional
- Phantom Powered
- No
- Impedance
- 1.5 kΩ
- MIC 090: Frequency Response
- 20 Hz – 18 kHz
- Dynamic Range
- 79 dB
- MIC 090: Sensitivity
- -56 ± 3 dB
- MIC 090: Signal-to-Noise Ratio
- 63 dB
- MIC 090: Plug
- 3.5 mm, right-angle
- Cord Length
- 39”
- MIC 090: Color
- Black
- MIC 090: Weight
- 0.05 lbs
- Replacement Windscreen
- WND 006
- Replacement Clip
- CLP 090
- MIC 090: Approvals
- RoHS
- MIC 090: Warranty
- 90 days
PPA R37
- PPA R37: Dimensions
- 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
- PPA R37: Weight
- 4.6oz (130g) with batteries. 2.6oz (73g) without batteries
- PPA R37: 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 (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
- PPA R37: Sensitivity
- 2 µV at 12 dB Sinad with squelch defeated
- Input Overload
- 100 mV
- PPA R37: Frequency Response
- 200 – 15 kHz
- PPA R37: Modulation
- FM, +/- 75 kHz peak deviation
- PPA R37: 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 Ω
- Auto Shut-off
- Enters sleep mode after approx 6 mins of no RF signal
- PPA R37: Approvals
- FCC, Industry Canada, RoHS, WEEE
- PPA R37: Warranty
- Lifetime PLUS Limited Warranty, 90 Days on most accessories.
PPA T46
- PPA T46: Dimensions
- 4.1” L x 2.8” W x 1.1” D (104 mm x 71 mm x 28 mm)
- PPA T46: Weight
- 2.6 oz (74 g), no batteries
- PPA T46: Color
- Black/Silver
- Enclosure Material
- Shatter-resistant PC/ABS plastic with textured scratch-resistant aluminum faceplate
- Battery Type options
- Two (2) AA 1.5 V non-rechargeable Alkaline batteries (BAT 001-2), 75 mA nominal current drain, up to 30 hours battery life Two (2) AA 1.5 V NiMH rechargeable batteries (BAT 026-2), 75 mA nominal current drain, up to 20 hours battery life per charge, recharges in 14–16 hours, uses CHG 3502 or CHG 3512 Charger
- Operating Frequencies
- Selectable, 17 channels, 72.1 – 75.9 MHz*. Switchable 8 or 17 Channel Mode. (8-channel mode setting corresponds with PPA R35-8 receiver channels)
- Stability
- ± .005%, frequency synthesized, crystal reference, PLL
- PPA T46: Modulation
- Wide-band FM, 75 kHz peak, 75 µS pre-emphasis
- RF Output
- 80 mV/m at 3 m (max. allowed by FCC rules)
- Range
- 150 ft/45 m
- PPA T46: Frequency Response
- 180 Hz to 13 kHz, ± 3 dB at 1% max. THD
- PPA T46: Signal-to-Noise Ratio
- 65 dB (typical) transmitted
- Transmit Antenna
- Integral with microphone cord
- Microphone
- Electret type, 3.5 mm mono plug
- External Display
- OLED for status and menu information. Status: Ch/Freq, Mic Audio Level, Auxiliary Input Audio Level, Battery Status, Mic Mute, Channel Lock, Dual-Preset mode. Menu: Ch/Freq display mode select, Volume, Aux Input, Compression, 17 or 8-channel mode, screen time out, screen brightness, restore default settings
- External Controls
- Momentary push button: push and hold 3 seconds for power On/Off, push and release for microphone mute On/Off. “Up”, “Down” and “Menu” buttons for accessing and changing transmitter settings. Battery type switch (Alkaline or NiMH) located behind the battery compartment door
- External Indicators
- Power LED - Green, flashes when battery is low
- 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
- Audio Compression
- 1:1 (off) or 2:1 (on) selectable in menu
- Compatible Receivers
- PFM R31, PFM R32, PFM R33, PFM R36, PPA R35, PPA R37, PPA R35-8, PPA R1600,
- Approvals/Directives
- FCC, Industry Canada, RoHS, WEEE
- PPA T46: Warranty
- Limited Lifetime Warranty (90 days on accessories)
Warranty
- Warranty: Warranty
- Lifetime PLUS Limited
Source: williamsav.com, Description, specs, Documentation and Related products tabs, read Nov 1, 2026 UTC.
Size and weight
Inches and pounds, millimetres and kilograms
The product
| What | Inches and pounds | Millimetres and kilograms |
|---|---|---|
| DimensionsPPA T46 transmitter | L4.1 | L104 |
| WeightPPA T46 transmitter, no batteries | 2.6 oz0.163 lbconverted | 74 g0.074 kgconverted |
| DimensionsPPA R37 receiver | 4.1 | 104 |
| WeightPPA R37 receiver, with batteries | 4.6 oz0.288 lbconverted | 130 g0.13 kgconverted |
| WeightPPA R37 receiver, without batteries | 2.6 oz0.163 lbconverted | 73 g0.073 kgconverted |
| WeightEAR 041 earphone | 0.013 lbconverted | 6 g0.006 kgconverted |
| WeightHED 021 headphone | 0.115 lbconverted | 52 g0.052 kgconverted |
| WeightMIC 090 microphone | 0.05 lb | 0.023 kgconverted |
Figures in black are the maker’s. Figures in grey are converted by the wiki (1 in = 25.4 mm, 1 lb = 0.45359237 kg).
More from Williams AV
6 pages on the wiki
Documents
6 linked, none copied here
References
1 source, with the day it was read
- williamsav.com, Description, specs, Documentation and Related products tabs, read Nov 1, 2026 UTC. Supports 89 specifications, the related products, the documents
Page history
Every read and every change to this page, newest first
- Page created from the maker’s page, among the products buyers searched on PriceQ. Product type proposed. Descriptions written at three lengths from the specifications.Claude Opus (AI agent) · Not reviewed yet
- Read on williamsav.com: Description, specs, Documentation and Related products tabs.Claude Opus (AI agent) · Not reviewed yet
The descriptions are written by the wiki from the specifications above, never copied from the maker.