Clear-Com BS850 (Last time buy) - Manual (Page 4)

SECTION 1. INTRODUCTION
PRO850 equipment operates in the UHF band from 470 MHz to 697.825 MHz in 18 MHz subsets.
Transmitters and receivers operate in different, non-adjacent 18 MHz bands. Synthesized frequencies can be
selected in 25 kHz increments over each 18 MHz band, for 720 transmit and 720 different receive frequencies.
Base stations can be configured with up to four receivers and two transmitters, supporting up to four Beltpacs in full-
time transmit, full-duplex operation. Two or three base stations interconnected can support up to twelve Beltpacs
operating at once. The channel lockout feature supports several Beltpacs sharing the same frequency. In this mode,
one Beltpac user on a shared frequency can transmit at a time. If another user is already transmitting on that frequency,
a “busy” signal will be heard. A maximum of sixteen Beltpacs can be used with a system (one to three base stations).
A feature can be selected that scans through all available intermodulation-free frequency groups to automatically
configure the system for the best available set of frequencies. Specified frequencies can be saved for quick recall.
The PRO850 can be configured for fixed power output levels or automated output power control. With the
automated feature selected, the PRO850 senses how far a Beltpac is from the base station and automatically
determines at what power level the Beltpac should be operating, eliminating base station receiver overload and
increasing Beltpac battery life.
Two hardwired intercom channels provide simultaneous 2-wire and 4-wire operation.
The base station headset interface automatically detects and accommodates dynamic or electret microphones.
It provides direct access to intercom channels 1 and 2, Beltpacs only or all channels.
Any Beltpac button can be configured to activate the base paging relay and, at the same time, audio is routed to the
paging output.
The base can be configured to initiate an alert for various conditions, including low battery condition or button
press from a Beltpac.
The PRO850 is fully compatible with RTS
® and Clear-Com ® hard-wired intercom systems.
With the provided PC850 software, the base station and Beltpacs can be configured on a PC, and configuration
settings can be saved to files. An RS-232 serial port on the rear panel of the base station provides PC interface
capability. Beltpacs can also be configured using a Palm-OS (3.5x or 4.x with booster, or 5.x without booster) PDA
with the optional PDA850 software.
The base station can operate from a standard 12-14VDC power source or from an external DC source such as a
vehicle electrical system for mobile operation.
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