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The WRR-861B UHF synthesized diversity
tuner is the latest addition to Sony’s lineup of
UHF synthesized wireless microphone
systems. Designed in accordance with the
strong need for high quality but cost-effective
wireless reception, this tuner packages
sophisticated features inherited from
Sony’s top of the line wireless systems.
These include such functions as space
diversity reception, easy-to-read LCD/LED
indicators, selectable RF squelch function,
transmitter battery alarm, headphone
monitoring function and many other
convenient features. Its core electronics are
also inherited from Sony’s high-end models,
providing low noise/distortion, a wide dynamic
range and stable RF reception.
The WRR-861B diversity tuner is designed to
be lightweight and rugged (made from die-cast
magnesium) in order to cover a diverse range
of applications. This makes it suitable for
applications ranging from ENG/EFP
acquisition to typical sound applications such
as field sound mixing in combination with
a portable mixer.
The WRR-861B is the wireless system of choice
where quality and cost are prime concerns.
UHF Synthesized Diversity Tuner
WRR-861B
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Space diversity reception system
The space diversity reception system, a feature usually available on
only high-end wireless systems, is incorporated to effectively eliminate
signal dropout and provide stable reception. This is achieved by
using dual antenna inputs/reception circuits that receive signals over
two different paths and select the stronger RF signal as the output.
Two way powering
The WRR-861B is capable of operating on external power supplied
from a Sony camcorder via the supplied DC cable. In addition, four
AA-size alkaline batteries provide approximately eight hours of
continuous operation.
Battery alarm for added assurance of continued operation
On the WRR-861B, you can monitor the battery reserve of a transmitter
as well as the battery status of the WRR-861B. The red LED starts
flashing one* hour before the transmitter’s battery goes dead. This
function helps to avoid the chance of battery failure at a critical
moment.
*This may vary depending on the operational environment.
Selectable RF squelch
The WRR-861B incorporates a selectable RF squelch function.
This function allows audio signals to be muted when the RF signal
decreases to a certain RF level to virtually eliminate undesired signals
from other wireless systems or ambient noise. The RF level is can be
set to 5 dBµ, 10 dBµ, 15 dBµ and OFF.
Rugged, die-cast magnesium construction
Pre-programmed frequency groups
Optimum combinations of precisely calculated and practically tested
intermodulation-free frequencies are stored in the CPU of the
WRR-861B in order to make it easy to choose the correct frequencies
for simultaneous multi-channel operation. These frequencies are
arranged in groups, with each group pre-programmed to allow intermodulation free operation.
Operating frequency ranges
The WRR-861B operates over a 24 MHz frequency band between
758 MHz and 806 MHz.
Extensive range of operating status on LED and LCD
The WRR-861B diversity tuner has LED and LCD indicators to provide
extensive information on operating conditions: the LEDs indicate RF
input status (green/red indication) and transmitter battery alarm, while
the LCD indicates operating channel/frequency, AF output level, RF
input level, receiver battery status and accumulated operating time.
Monitoring function
The WRR-861B includes a mini jack for monitoring the output sound
with headphones. A monitor volume control is also included.
Compact and lightweight for mounting on Sony
professional camcorders
This diversity tuner is lightweight, only 290 g (excluding batteries).
The WRR-861B is easily mounted on Sony professional camcorders*
with the attachment kit and case.
*Additional mounting hardware may be required for some Sony camcorders.
Receiving frequencies: WRR-861B62/64 758 MHz to 782 MHz (TV channels 62-65)
WRR-861B66/68 782 MHz to 806 MHz (TV channels 66-69)
(Users may choose from 188 frequencies on each model.)
Type of reception: Space diversity
Circuit system: Dual conversion superheterodyne
Local oscillators: 1st: PLL synthesizer, 2nd: Crystal oscillator
RF input terminal: BNC-R (x 2), 50 Ω (nominal) impedance
System dynamic range: 96 dB or more (101 dB typical)
Reference deviation: ±5 kHz deviation at 1 kHz modulation
Maximum deviation: ±40 kHz deviation at 1kHz modulation
Signal-to-noise ratio: 60 dB or more (65 dB typical) at 60 dBµ RF input at reference deviation, A-weighted
Selectivity: 60 dB or more at ±250 kHz
RF squelch level: 5 dBµ, 10 dBµ, 15 dBµ or OFF
De-emphasis: 50 µs
Frequency response: 40 Hz to 18 kHz
Distortion: 1.0 % or less (±40 kHz deviation at 1 kHz modulation)
AF output: SMC9-4S (Sony 4-pin, x 1), 150 Ω impedance (balanced)
Output level: -58 dBm (±5.0 kHz deviation at 1 kHz modulation)
Monitor output: 3.5 mm dia. mini jack (x 1, 5 mW)
Indicators LCD: Operating channel/frequency, AF output level, RF input level, receiver battery status,
and accumulated operating time
LED: RF input status, diversity reception status, and transmitter battery alarm
Power requirements: Batteries: approx. 140 mA at DC 6 V
External: approx. 85 mA at DC 12 V
Battery life: Approx. 8 hours using four AA-size alkaline batteries at 25˚ C
Body construction: Die-cast magnesium (color: dark gray)
Dimensions: 89.0 x 120.0 x 29.5 mm (3 5/8 x 4 3/4 x 1 3/16 inches)
Mass: Approx. 290 g (10.2 oz) excluding batteries
Supplied accessories: Attachment case (x 1), camera attachment kit (x 1), antennas (x 2),
output cable (x 1), DC cable (x 1)
Optional accessory: Mounting bracket for Sony professional camcorders - part number A-8278-057-A.
The part is only available through Sony’s National Parts Center. Please contact your
Sony Authorized Dealer or Rep for detailes.
Features
WRR-861B
Specifications Dimensions
UHF Synthesized Diversity Tuner
A-1091
MK7780V1TC01NOV
Use of Sony wireless devices in the United States of America is regulated by the Federal
Communications Commission as described in Parts 15 and 74 of the FCC regulations.
Users authorized thereby are required to obtain an appropriate license.
© 2001 Sony Corporation. All rights reserved.
Reproduction in whole or in part without written permissions is prohibited.
Features and specifications are subject to change without notice.
All non-metric weights and measures are approximate.
Sony is a registered trademark of Sony Corporation.
All other trademarks are the property of their respective owners.
Printed in USA
Sony Electronics Inc.
One Sony Drive
Park Ridge, NJ 07656
www.sony.com/proaudio
3
(1
/16 inches)
97.0 mm (3 7/8 inches)
89.0 mm (3 5/8 inches)29.5 mm
/4 inches)
3
220.0 mm (8
/4 inches)
3
120.0 mm (4
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