Clear-Com WTR4C User Manual
UHF ANALOG WIRELESS INTERCOM SYSTEMS
WBS-670
WBS-670/680
Powerful Features and Performance
For Reliable Mobile Communications
WBS-680
Whether you are adding to a wired intercom system or creating
a standalone wireless communications system, the WBS-670
and WBS-680 wireless intercoms are excellent choices. These
systems extend the reach of your communications system in live
performance, studio and mobile television production, industrial
and aerospace applications, or wherever full-duplex wireless
communications are required.
Frequency-agile UHF Operation
The WBS-670 and WBS-680 operate in select frequency
bands between 470-686MHz. Both wireless systems are
supplied with 24 factory-selected, intermodulation-free
frequencies. Select from factory presets or any suitable
frequency in 25KHz increments. 720 Tx and 720 Rx
frequencies can be selected; each from independent
18 MHz operational bands.
Adjustable Transmitter Power
The beltpacks can sense when operating in close proximity
to the base station and intelligently reduce transmitter
output by 10dB. This effectively eliminates overloading
the base station receiver front end which is the primary
cause of “nearfar” densing problems. WBS wireless
system beltpacks operate in normal power mode for
typical distances; a manual high power setting is available
when operating the equipment more than 200ft (160m)
for the base station.
Pre-Selected Compatible
Frequencies and Frequency Scan System setup is easy
with the 24 internal pre-selected and intermodulation-free
frequency groups. Aided by the “ClearScan” function,
base stations and beltpacks can typically be coordinated
and working together within minutes. Memory locations
can be allocated so that particular sets of frequencies can
be chosen, programmed and saved as a new preset.
Graphical User Interface
A clear, backlit LCD screen displays the status of the
beltpacks and provides easy access to all the powerful
features as well as conguration of the operational parameters. The LCD displays which beltpack is transmitting,
operating frequencies, and group/channel status.
Superior Audio Quality and Range
The audio quality of the WBS-670 and WBS-680 wireless
systems is on par with that of professional wired partyline
and digital matrix intercoms. UHF frequencies are ideally
suited for operating through obstacles; a variety of remote
antenna options can help improve range in difcult,
interference-prone production environments.
Seamless Connection to Wired Intercoms
WBS wireless systems can interface with a variety of 2-wire
partyline, 4-wire digital matrix or other wireless intercom
systems. In addition to interfacing with external intercom
systems, the systems provide connections for auxiliary
balanced audio input and output. Wireless Talk-Around
(WTA) and Stage Announce (SA) features are available on
the WTR-680 beltpack.
Rechargeable Battery Option
The 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. Chargers are
available in single-bay or 4-bay congurations.
2 Clear-Com WBS
WIRELESS INTERCOM SYSTEMS
WBS-670 SINGLE-CHANNEL WIRELESS
The WBS-670 1RU, rack-mountable base station supports
up to four full-duplex wireless beltpacks.
System features:
Full talk/listen headset at the base•
Rear panel connections allow system expansion•
LCD screen displays which beltpacks are transmitting •
the operating frequencies and group/channel status
Input and output level adjustment controls for •
both the connected wired intercom and auxiliary
audio connection
3-pin XLR loop-through connectors for one channel •
of wired partyline intercom at the rear
WTA (Wireless-Talk-Around) button momentarily routes •
audio to only the wireless beltpacks monitoring the
current channel, serving as isolation (ISO) channel
Stage Announce (SA) button allows a (dry) relay signal•
RJ-45 connector for direct connection to a digital 4-wire •
intercom port, and a pair of auxiliary connectors
WBS-680 TWO-CHANNEL WIRELESS
The WBS-680 1RU, rack-mountable base station supports
up to four full-duplex wireless beltpacks.
System features:
Full talk/listen headset at the base•
A pair of efcient, half-wave co-linear antennas is •
supplied with system; A variety of external antennas
may also be used.
WTR-670 BELTPACK FEATURES
Extremely light, durable cast magnesium•
Durable, detachable antennas are secured to the •
beltpack via threaded post connectors
Low-prole volume control•
Robust, distinguishable momentary latch talk button•
Rear panel connections allow base station to connect •
to two separate channels of wired intercom (2-wire,
4-wire, or both)
Toggle switch enabling the user to communicate with •
either intercom channel A or B (including any wired
intercoms connected at the base station)
LCD screen displays which beltpacks are transmitting •
the operating frequencies and group/channel status
Input and output level adjustment controls for both the •
connected wired intercom and auxiliary audio connection
3-pin XLR loop-through connectors for one channel •
of wired partyline intercom at the rear
WTA (Wireless-Talk-Around) button momentarily routes •
audio to only the wireless beltpacks monitoring the
current channel, serving as isolation (ISO) channel
Stage Announce (SA) button allows a (dry) relay signal, •
which can activate a loudspeaker, two-way radio, IFB,
or any other relay activated device
RJ-45 connector for direct connection to a digital 4-wire •
intercom port, and a pair of auxiliary connectors
A pair of efcient, half-wave co-linear antennas is •
supplied with system; A variety of external antennas
may also be used.
WTR-680 BELTPACK FEATURES
Extremely light, durable cast magnesium•
Durable, detachable antennas are secured to the •
beltpack via threaded post connectors
Low-prole volume control•
Robust, distinguishable momentary latch talk button•
Stage Announce•
Wireless-Talk-Around (WTA)•
Clear-Com WBS 3
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