Williams Sound PFM 863 User Manual
Personal fm, Listening system, Model pfm 863
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, con-
sultation 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 ear-
phone 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 par-
ticipants. 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:
On/Off/Channel
Selector Switch
Antenna
Microphone Jack
"On" Indicator LED
T863 Top
T863 Front
ADA
ADA