Whisper™ FM

Whisper™ FM Receiver • Model R863

Description:

The R863 is a portable, body-pack style FM receiver with user-selectable operating frequencies of

863.25MHz, 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.

Receiver • Model R863

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)

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; 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

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)

 

On/Off/Channel

"On" Indicator LED

Selector Switch

O

 

Earphone/Headphone Jack

Volume Control

R863 Top

R863 Front

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

 

©2007, Williams Sound Corp. MCAT 059A

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Williams Sound specifications Whisper FM Receiver Model R863, Description, R863 Receiver
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R863 specifications

The Williams Sound R863 is a highly regarded assistive listening transmitter, designed to enhance communication and audio experience in various settings, such as theaters, churches, and educational institutions. This versatile device operates on the 72-76 MHz frequency range, ensuring clear sound transmission over considerable distances while minimizing interference from other electronic devices.

One of the standout features of the R863 is its exceptional range, allowing it to cover large areas without sacrificing audio quality. This makes it particularly useful for venues where multiple listeners may be situated at varying distances from the sound source. The device can efficiently transmit audio to multiple listeners simultaneously, making it an ideal solution for events with larger audiences.

The R863 is equipped with a built-in microphone and an audio input for external sources, providing flexibility for different audio input options. Users can easily connect the device to various audio systems, allowing it to receive sound from microphones, mixers, or even music playback systems. This adaptability ensures that the R863 can be used in a variety of applications, whether for enhancing speech intelligibility in lectures or improving the audio experience in live performances.

Another notable characteristic of the R863 is its user-friendly interface, which includes intuitive controls for volume adjustment and power management. This simplicity makes it accessible for individuals of all technical skill levels, ensuring that anyone can set it up and utilize its features effectively. Additionally, the device's robust construction guarantees durability, making it suitable for frequent use in both permanent installations and portable setups.

The technology behind the Williams Sound R863 incorporates advanced audio processing capabilities, which help to optimize sound quality by reducing background noise and enhancing clarity. This is crucial in environments where external sounds may interfere with communication, ensuring that users receive a clear and undistorted audio signal.

In summary, the Williams Sound R863 transmitter is an excellent choice for those in need of assistive listening solutions. Its impressive range, versatility in audio input options, user-friendly operation, and superior sound processing capabilities make it a valuable asset for enhancing audio experiences across various settings. Whether for educational purposes, entertainment, or places of worship, the R863 delivers reliable performance that meets the demands of diverse audiences.
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