Clear-Com WBS-670 User manual

Clear-Com WBS-670 User manual
audio clarity | frequency agility | ease-of-use | dependability
quency-agile UHF wireless intercom systems
hether you’re adding to a wired intercom system or creating a stand-alone wireless communications system, the WBS670 and WBS-680 wireless intercoms are excellent choices. Combining frequency agility, audio clarity, powerful features,
and roadworthiness with ease-of-use, these systems will extend the reach of your communications system in live theatre and
performance, studio and mobile television production, industrial and aerospace applications, or wherever full-duplex wireless
communications are required.
WBS-670 Single-Channel Wireless
The WBS-670 supports up to four full-duplex wireless beltpacks with its 1-RU base station. Multiple
stations may be used together for larger productions, tied together via the party-line intercom
channel. The WTR-670 wireless beltpack features a
low-profile on/off/volume control and a momentary/ latching talk button. Rugged detachable
antennas are easily field-replaceable. The integral
LCD window shows channel and frequency information, and allows the programming of beltpack
channels and functions.
The simple base-station front panel with its backlit
LCD screen gives total control over frequency and
beltpack selection, as well as control over the input
and output level to an attached party-line or digital
matrix intercom and an auxiliary in and out. If
desired, a headphone may be connected to the
front panel to communicate with the wireless beltpacks and the connected wired intercom system.
The rear panel features 3-pin XLR loop-through
connectors for one channel of party-line intercom,
an RJ-45 connector for direct connection to a digital intercom port, and a pair of auxiliary connectors. Screw-on TNC connectors for the base station
transmitter and receiver sections are fitted with a
pair of efficient half-wave collinear antennas, or a
variety of external antennas may be used. The
WBS-670 is compatible with virtually all wired
party-line and matrix intercom systems.
WBS-680 Two-Channel Wireless
Like the WBS-670, the WBS-680 supports up to
four beltpacks per base station. This system adds
the ability to connect the wireless beltpacks, via
the base station, to two channels of wired inter-
com — party-line, digital matrix, or one of each.
A variety of different communications routings are
activated from the beltpacks, with each beltpack
user having full control; if desired, the technical
director can lockout unnecessary functions on any
individual beltpack.
The WTR-680 beltpack front panel provides a channel A/B selector button, allowing the user to talk
and listen to either wired intercom channel A (plus
the other wireless beltpack users on that channel)
or wired intercom channel B. The WTR-682 beltpack allows the user to listen and talk on either or
both of the two intercom channels. A “wireless talk
around” button places the user’s voice on the wireless-only bus, unheard by those on the wired intercoms. In addition, the beltpacks have a “stage
announce” button, which when activated places
the user’s voice off the intercom line and onto an
audio clarity | frequency agility | ease-of-use | dependability
auxiliary output with associated relay on the base
station — for paging and announcements.
The WBS-680 adds another wired intercom connector section on the rear panel, plus a stageannounce output and relay contact. Front-panel
controls and indicators give control and status
information about all of these communication connections. Also, a base-station link connector permits the “wireless talk around” to be shared
among base stations.
Frequency-Agile UHF Operation
The WBS-670 and WBS-680 operate in selected
frequency bands between 518 – 740 MHz. Three
different sets are available for compatibility virtually anywhere. An 18 MHz (three U.S. TV channels)
frequency window is used for the base-station
transmitter, with a separate 18 MHz window for the
beltpack transmit frequencies (base-station receive
frequencies). These bands are each divided into
740 distinct frequencies at 25 kHz intervals. The
WBS-680 has two different base-station transmit
frequencies — one each for intercom channels
A and B.
Adjustable Transmitter Power
The base-station transmitter has a high-power setting of 100 mW (WBS-670 is 50mW), a low-power
setting of 10 mW for closer distance use, and may
be turned off when necessary for setup and linking. The beltpack transmitters have built-in sensing
circuitry that drops the normal 50 mW output by
10 dB whenclose to the base station, to prevent
de-sensing of its receivers.
gram material sound more natural and less fatiguing. Efficient antennas and sensitive receiver
design lead to excellent range for reliable use at a
distance. A variety of remote antenna options,
such as quarter-wave ground-plane and log-periodic, enhance that range and help with difficult
production environments.
Pre-Selected Compatible Frequencies
and Frequency Scan
Internal Audio Routing Options
System setup is a snap using the 24 internal preselected and intermodulation-free frequency
groups. Aided by the “scan” function, which senses the local RF environment and determines which
of the frequency groups has the largest number of
clear frequencies, base stations and beltpacks can
Circuit paths on the WBS-680 main board may be
wired, either internally or externally, to give variable-level dual-listen features to the beltpacks —
one can hear channel A when talking on B, and
vice-versa. This feature is set at the base station
and affects all beltpacks identically. Also, base-
typically be coordinated and working together
within minutes. A dozen more memory locations
are allocated for user-programmable groups, so
that particular sets of frequencies can be chosen,
programmed, and saved as a new preset.
station internal switching can place auxiliary audio
on beltpack channel B only, or on both A and B.
Great Audio Quality and Range
Perhaps you’ve experienced that many of the available options for adding wireless capability to the
intercom system end up sounding like a telephone
or a two-way radio–intelligible but not great. The
audio quality of the WBS-670 and WBS-680 is on a
par with that of a professional party-line or digital
matrix intercom, so voice communications and pro-
Rechargeable Battery Option
The convenient battery pack will operate the beltpack in full-duplex mode for 14 hours with a set of
alkaline batteries. The optional rechargeable
NiMH (nickel metal hydride) batteries will give
over 11 hours of continual use — enough to cover
the entire production from setup to teardown. A 4bay charger keeps a system’s worth of batteries at
the ready.
RF Frequency Range:
Power Requirement:
Typical Battery Life Alkaline:
Typical Battery Life
Nickel Metal Hydride (1500 mAh):
Current Draw:
Temp Range:
Transmit antenna:
Receive antenna:
Frequency Response:
Four-Wire Input:
Four-Wire Output:
Clear-Com® Intercom:
RTS® Intercom:
Telex® Intercom:
Auxiliary Input:
Auliliary Output:
Stage Announce Output:
(WBS-680 only)
Stage Announce Relay:
(WBS-680 only)
518-608 MHz, 614-740 MHz in 18 MHz TX and RX bands
WBS-670 Only: 796-814 MHz Tx, Europe
100-240 VAC, 50-60 Hz, IEC receptacle
518 - 608 MHz, 614 - 740 MHz in 18 MHz TX and RX bands
WTR-670 Only: 844-862 MHz Tx, Europe
6 Alkaline "AA" Cells (NiMH optional)
14 Hours (Continuous duty with talk light on)
-4oF to 140oF (20oC to 55oC)
19.0" W x 1.72" H x 14.0" D (48.3 cm x 4.4 cm x 35.6 cm)
WBS-680: 7 lbs. 2 oz. (3.24 kg)
WBS-670: 6 lbs. 15 oz. (3.15 kg)
1/2 Wave (supplied), TNC Male Connector
1/2 Wave (supplied), TNC Male Connector
300 Hz - 8,000 Hz
Level Adjustable (2 Vrms typical)
Level Adjustable (2Vrms typical)
Input/Output Level Adjustable (1 Vrms typical), Line Impedance 200 W
Input/Output Level Adjustable (0.775 Vrms typical), Line Impedance 200 W
Input/Output Level Adjustable (1 Vrms typical), Line Impedance 300 W
Adjustable (2 Vrms typical)
Adjustable (2 Vrms typical into 600 W) (at rated deviation)
Internally Adjustable (1Vrms typical at rated deviation into 100K W)
11 Hours (Continuous duty with talk light on)
140 mA (Push-to-Talk, Talk On)
-4oF to 140oF (20oC to 55oC)
3.75" W x 5.05" H x 1.65" D (9.5 cm x 12.8 cm x 4.2 cm)
16 oz. (0.454 kg) with alkaline batteries
15 oz. (0.425 kg) with alkaline batteries
1/4 Wave (supplied), Screw type
1/4 Wave (supplied), Screw type
300 Hz - 8,000 Hz
Dry contact, rated at 1Amp, 24 V Max. / N/A
Synthesized, 720 channels
WBS-680: 100 mW max. (High), 10 mW (normal)
WBS-670: 50 mW max. (High), 5 mW (normal)
FM, 40 KHz Deviation
Peak-Responding Compressor
300 Hz -8,000 Hz +-2 dB
30 W - 3,500 W
9 mV
Exceeds FCC specifications
Type accepted under FCC Part 74
Synthesized, 720 channels
WTR-680/WTR-670: 50 mW max.
(auto-power reduction when close to base)
FM, 40 KHz Deviation
Peak-Responding Compressor
300 Hz -8,000 Hz +-2 dB
30 W - 3,500 W
9 mV
Exceeds FCC specifications
Type accepted under FCC Part 74
Dual Conversion Superheterodyne,
Synthesized, FM, 720 channels
<0.7 mV for 12 dB SINAD
95 dB
3 dB at 230 KHz
70 dB or better
95 dB
<1% at full deviation
40mW output into 600 W (1% distortion)
Notification under FCC Part 15
Dual Conversion Superheterodyne,
Synthesized, FM, 720 channels
<0.7 mV for 12 dB SINAD
95 dB
3 dB at 230 KHz
70 dB or better
95 dB
<1% at full deviation
40mW output into 600 W (1% distortion)
Notification under FCC Part 15
Transmit Power:
RF Frequency Stability:
Modulation Limiter:
Modulation Frequency Range:
Microphone Audio Input:
Microphone Input Sensitivity:
Radiated Harmonics & Spurious:
FCC Acceptance:
RF Sensitivity:
Signal-to-Noise Ratio:
IF Selectivity:
Image Rejection:
Squelch Quieting:
RF Frequency Stability:
Local Headset Output:
FCC Acceptance:
Americas and Asia
4065 Hollis Street • Emeryville, CA 94608, USA
Tel: 1-510-496-6666 • Fax: 1-510-496-6699
Europe, Middle East and Africa
7400 Beach Drive, Cambridge Research Park • Cambridge CB5 9TP, UK
Tel: +44 (0) 1223 815000 • Fax: +44 (0) 1223 815099
© 2005 Clear-Com Communication Systems. Clear-Com, PL-Pro and Matrix Plus are registered trademarks and
Que-Com, and MicroMatrix are trademarks of Clear-Com Communication Systems. All rights reserved.
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