WBS-670/680 Wireless Intercom Systems
3
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 intercom – party-
line, digital matrix, or one of each. A variety
of different communication routings are
activated from the beltpacks, with each
beltpack user having limited or full control.
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 or wired intercom
channel B. The WTR-680 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 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.
WBS-680 Two-Channel Wireless
Frequency-agile UHF Operation
The WBS-670 and WBS-680 operate in
selected frequency bands between 518 –
740 MHz. These bands are each divided
into 740 distinct frequencies at 25 kHz
intervals.
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. The beltpack
transmitters have built-in sensing circuitry
that drops the normal 50 mW output by
10 dB when close to the base station.
Pre-Selected Compatible
Frequencies and Frequency Scan
System setup is easy with the 24 internal
preselected and intermodulation-
free frequency groups. Aided by the
“scan” 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.
Great Audio Quality and Range
The audio quality of the WBS-670
and WBS-680 is on par with that of a
professional party-line or digital matrix
intercom. Efcient antennas and sensitive
receivers lead to excellent range for
reliable use at a distance. A variety of
remote antenna options enhance that
range and help with difcult production
environments.
Internal Audio Routing Options
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. Also
base station internal switching can place
auxiliary audio on beltpack channel B only,
or on both A and B.
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. A 4-bay charger keeps a
system’s worth of batteries at the ready.
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