Williams Sound Whisper R863 Specification Sheet

Whisper ™ FM Receiver •

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:
Weight:
Color:
Material:
Battery Type:
Operating Frequencies:
Operating Range:
Stability:
FM Deviation:
De-Emphasis:
Sensitivity:
Squelch:
Freq Response:
Distortion:
Signal–Noise Ratio:
Antenna:
Controls & Indicators:
Headphone jack:
Charging Contacts:

Approvals:

Warranty:

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2007, Williams Sound Corp. MCAT 059A
Model R863
115 mm H x 72 mm W x 30 mm T
(4.5" H x 2.85 W x 1.2" T)
85 grams (3 oz.), no batteries
Black
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)
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
CH 1 - 863.25 MHz; CH 2 - 863.75 MHz;
CH 3 - 864.75 MHz ( ± 30 kHz)
30 meters (98.4 feet) with T863 transmitter
± .05 MHz, 0 - 50° Celsius
60 kHz ±5 kHz, transmitter input at 1 kHz, 2.5 mV
50 µS
< - 90 dBm @ 60 kHz deviation
-100 dB @ 6 kHz
500 Hz - 5 kHz, ±3 dB
< 2.0% THD
>50 dB ( ± 5 dB) with transmitter input at 1 kHz, 2.5mV
Internal wire monopole
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
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)
Earphone/Headphone Jack
1
On/Off/Channel
Selector Switch
"On" Indicator LED
O
Volume Control
R863 Top
R863 Front