Williams AV PFM PRO Personal FM Listening System

The Personal FM Listening System PFM PRO delivers superior audio directly to the ear, enhancing sound at home, work, or school - anywhere background noise or distance from the source makes listening difficult. This system uses alkaline batteries.

The T46 transmitter can broadcast on 17 selectable channels on the 72-76 MHz band, and has an operating range of up to 150 feet. The listener uses a PPA R37 receiver that works with a variety of earphones and headphone options. The receiver is also compatible with neckloops (not included with system) for connecting to Telecoil-equipped hearing aids. The transmitter, receiver, microphone, earphones and headphones are provided in a convenient carrying case.

NOTE: The PFM PRO and PFM PRO RCH systems are approved by the FCC for operation in U.S. markets. These systems cannot be used in all countries. Check with your governments radio regulations for 72-76 MHz operation.

DISCLAIMER: FCC rules limit use of this equipment to auditory assistance.

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 Alkaline Batteries (BAT 001-2)
(1) System Carry Case (CCS 043)

Technical Specifications

EAR 041
Style
Single, in-ear, isolation earphone
Plug
3.5mm mono
Cord
39"
Driver Size
10 mm
Nominal Impedance
16OHM
Freq. Response
20 - 20kHz
Weight
6g
Max Power Input
5 mW
Sensitivity
104 dB @ 1kHz
Replacement Silicone Tip
EAR 043 (0ne pair)

HED 021
Style
Mono, folding headphone
Plug
3.5mm mono
Cord
39"
Driver Size
30 mm
Nominal Impedance
32OHM
Freq. Response
20 - 20kHz
Weight
52g
Max Power Input
100 mW
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 kOHM
Frequency Response
20 Hz - 18 kHz
Dynamic Range
79 dB
Sensitivity
-56 +/- 3 dB
Signal-to-Noise Ratio
63 dB
Plug
3.5 mm, right-angle
Cord Length
39”
Color
Black
Weight
0.05 lbs
Replacement Windscreen
WND 006
Replacement Clip
CLP 090
Approvals
RoHS
Warranty
90 days

PPA 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
(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 uS
LED Indicator
Power: Green; Low Battery: Flashes Green
AFC Range
+/- 120 kHz
Sensitivity
2 uV 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 OHM
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.

PPA T46
Dimensions
4.1” L x 2.8” W x 1.1” D (104 mm x 71 mm x 28 mm)
Weight
2.6 oz (74 g), no batteries
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
Modulation
Wide-band FM, 75 kHz peak, 75 uS pre-emphasis
RF Output
80 mV/m at 3 m (max. allowed by FCC rules)
Range
150 ft/45 m
Frequency Response
180 Hz to 13 kHz, +/- 3 dB at 1% max. THD
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
Warranty
Lifetime PLUS Limited Warranty, 90 Days on most accessories.