Williams Sound Stereo System R863 User Manual

WhisperFM Receiver  
Model R863  
Description:  
The R863 is a portable, body-pack style FM receiver with user-selectable operating frequencies of  
863.25 MHz, 863.75 MHz, or 864.75 MHz. The R863 receiver will operate up to 30 meters (98 feet)  
when used with the Williams Sound T863 transmitter. The receiver is showcased in a black,  
ergonomic, impact-resistant case, and is belt-clip equipped for hands-free operation. Controls  
include an adjustable volume control, integrated on/off/channel switch, and power ON indicator  
LED. Drop-in charging points allow up to 12 receivers to be charged at once in the optional  
CHG 3512 multi-charger. The R863 receiver will operate on two AA batteries for up to 40 hours, or  
30 hours per charge when used with Williams Sound rechargeable batteries. The R863 can be  
equipped with a headphone, earphone, or neckloop.  
Applications:  
Tours • Language Interpretation • Hearing Assistance  
R863 Receiver:  
Dimensions:  
115 mm H x 72 mm W x 30 mm T  
(4.5” H x 2.85 W x 1.2” T)  
On/Off/Channel  
Selector Switch  
"On" Indicator LED  
Weight:  
85 grams (3 oz.), no batteries  
Color:  
Black  
Material:  
Battery Type:  
ABS/Polycarbonate, shatter-resistant  
Two (2) AA 1.5 V Non-rechargeable Alkaline batteries  
(BAT 001), 50 mA nominal current drain, 40 hours approx. life  
(OR)  
O
Volume Control  
Earphone/Headphone Jack  
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  
R863 Top  
Operating Frequencies:  
CH 1 - 863.25 MHz; CH 2 - 863.75 MHz;  
CH 3 - 864.75 MHz ( 30 kHz)  
Operating Range:  
Stability:  
30 meters (98.4 feet) with T863 transmitter  
.05 MHz, 0 - 50° Celsius  
FM Deviation:  
De-Emphasis:  
Sensitivity:  
60 kHz 5 kHz, transmitter input at 1 kHz, 2.5 mV  
50 µS  
< - 90 dBm @ 60 kHz deviation  
Squelch:  
-100 dB @ 6 kHz  
Freq Response:  
Distortion:  
500 Hz - 5 kHz, 3 dB  
< 2.0% THD  
Signal–Noise Ratio:  
Antenna:  
>50 dB ( 5 dB) with transmitter input at 1 kHz, 2.5mV  
Internal wire monopole  
Controls & Indicators:  
Volume control knob; Channel selector (four position rotary  
switch): Position 1 is off; position 2 is CH1; position 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  
R863 Front  
Headphone jack:  
Charging Contacts:  
Approvals:  
3.5 mm jack, mono output, 8-32 ohm impedance  
Designed for use with CHG 3512 Battery Charger  
CE, RoHS, WEEE, ETSI EN 301 357-1, ETSI EN 301 357-2  
3 years parts and labor (90 days on accessories)  
Warranty:  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2007, Williams Sound Corp. MCAT 059A  
1
 
WhisperFM Receiver  
Model R863  
Contact:  
Williams Sound Corporate Headquarters  
10321 W. 70th Street  
Eden Prairie, MN 55344  
Phone: 800-328-6190 or 952-943-2252  
Fax: 952-943-2174  
United Kingdom  
Sound Associates  
Keeble House, 81 Island Farm Road  
West Molesey, Surrey KT 2SA  
United Kingdom  
Phone: (44) 020 8939 5900  
Fax: (44) 020 8939 5901  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2007, Williams Sound Corp. MCAT 059A  
3
 

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