Williams Sound PFM 863 User Manual
Personal FM
™
Listening System
• Model PFM 863
Personal FM™Listening System
• Model PFM 863
©2007, Williams Sound Corp. MCAT 061A
1
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
Description:
The Personal FM Listening System, model PFM 863, helps to overcome distance from the speaker,
reduces background noise and distractions for improved hearing in the classroom, job training, consultation and more. The speaker uses the T863 transmitter equipped with a microphone to deliver
their message wirelessly to a listener. The listener uses the R863 receiver equipped with an earphone or headphone to pick-up the speaker’s message. The Personal FM system helps to overcome
background noise, distance from the speaker, and enhances the quality of the message for all participants. The Personal FM system operates on 863 MHz, meets RoHS approval guidelines, and is
backed by a 3 year factory warranty.
Applications:
Classrooms • Job Consultation • Job Training • Tours • Group Meetings
Dimensions: 155 mm H x 72 mm W x 30 mm T
(6.1” H x 2.85” W x 1.2” T)
Weight: 82 grams (2.89 oz.), no batteries
Color: Black
Material: ABS/Polycarbonate, shatter-resistant
Battery Type: Two (2) AA 1.5 V Non-rechargeable Alkaline batteries
(BAT 001), 100 mA nominal current drain, 20 hours
approx. life
(OR)
Two (2) AA 1.2 V NiMH Rechargeable batteries (BAT 026),
100 mA nominal current drain, 15 hours per charge
approx., recharges in 14–16 hours, uses CHG 3512
Multiple Battery Charger
Operating Frequencies: CH 1 - 863.25 MHz; CH 2 - 863.75 MHz;
CH 3 - 864.75 MHz ( ±30 kHz)
Operating Range: 30 meters (98.4 feet) with R863 receiver
Stability: ± .05 MHz, 0 - 50° Celsius
FM Deviation: 60 kHz ±5 kHz, transmitter input at 1 kHz, 2.5 mV
Pre-Emphasis: 50 µS
Sensitivity: < - 90 dBm @ 60 kHz deviation
RF Output: 5 - 10 dBm
Freq Response: 500 Hz - 5 kHz, ±3 dB
Distortion: < 2.0% THD
Transmit Antenna: External, 5cm
Microphone: Head-worn, noise-cancelling, electret type, 39 in. cord, 3.5
mm mono phone plug (MIC 086)
Controls & Indicators: Microphone gain adjust; Channel/Power selector (4 posi-
tion rotary switch): “Power icon” is off; position 1 is CH1;
position2 is CH 2; position 3 is CH 3
Power on indicator: Red LED “on” indicates when receiv-
er has power
Low battery indicator: Power LED flashes when batteries
are low
Battery selector: Slide switch for alkaline or NiMH battery
operation
Mic Connector: 3.5 mm jack
Charging Contacts: Designed for use with CHG 3512 Battery Charger
Approvals: CE, RoHS, WEEE, ETSI EN 301 357-1, ETSI EN 301 357-2
Warranty: 3 years parts and labor (90 days on accessories)
T863 Transmitter:
T863 Top
T863 Front
ADAADA
"On" Indicator LED
Microphone Jack
On/Off/Channel
Selector Switch
Antenna
Personal FM
™
Listening System
• Model PFM 863
Personal FM™Listening System
• Model PFM 863
©2007, Williams Sound Corp. MCAT 061A
2
Dimensions: 115 mm H x 72 mm W x 30 mm T
(4.5” H x 2.85 W x 1.2” T)
Weight: 85 grams (3 oz.), no batteries
Color: Black
Material: ABS/Polycarbonate, shatter-resistant
Battery Type: Two (2) AA 1.5 V Non-rechargeable Alkaline batteries
(BAT 001), 50 mA nominal current drain, 40 hours
approx. life
(OR)
Two (2) AA 1.2 V NiMH Rechargeable batteries (BAT 026),
50 mA nominal current drain, 30 hours per charge
approx., recharges in 14–16 hours, uses CHG 3512
Multiple Battery Charger
Operating Frequencies: CH 1 - 863.25 MHz; CH 2 - 863.75 MHz;
CH 3 - 864.75 MHz ( ± 30 kHz)
Operating Range: 30 meters (98.4 feet) with T863 transmitter
Stability: ± .05 MHz, 0 - 50° Celsius
FM Deviation: 60 kHz ±5 kHz, transmitter input at 1 kHz, 2.5 mV
De-Emphasis: 50 µS
Sensitivity: < - 90 dBm @ 60 kHz deviation
Squelch: -100 dB @ 6 kHz
Freq Response: 500 Hz - 5 kHz, ±3 dB
Distortion: < 2.0% THD
Signal–Noise Ratio: >50 dB ( ± 5 dB) with transmitter input at 1 kHz, 2.5mV
Antenna: Internal wire monopole
Controls & Indicators: Volume control knob; Channel selector (four position
rotary switch): Position 1 is off; position 2 is CH1; posi-
tion 3 is CH 2; position 4 is CH 3
Power on indicator: Red LED “on” indicates when
receiver has power
Low battery indicator: Power LED flashes when batteries
are low
Battery selector: Slide switch for alkaline or NiMH
battery operation
Headphone jack: 3.5 mm jack, mono output, 8-32 ohm impedance
Charging Contacts: Designed for use with CHG 3512 Battery Charger
Approvals: CE, RoHS, WEEE, ETSI EN 301 357-1, ETSI EN 301 357-2
Warranty: 3 years parts and labor (90 days on accessories)
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
R863 Receiver
R863 Top
R863 Front
ADAADA
"On" Indicator LED
Earphone/Headphone Jack
On/Off/Channel
Selector Switch
O
Volume Control
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