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RadioShack PRO-90 - 300 Channel Manual

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FEATURES
Your new RadioShack PRO-90 300-Channel Trunk-
Tracker Scanner is the first of a new generation of scan-
ners designed to track Motorola Type I and Type II
(such as Smartnet, and Privacy Plus) and hybrid an-
alog trunking systems, which are extensively used in
many 800 MHz communication systems.
Trunking communications systems let a large group of 2-
way radio users (or even different groups of 2-way radio
users) efficiently use a large range of frequencies. Instead
of selecting a specific frequency for a transmission, the 2-
way radio user simply selects a talk group. The trunking
system automatically transmits the call on the first avail-
able frequency, and also sends a code that uniquely iden-
tifies that 2-way radio user’s transmission on a different
frequency called a data channel.
Since the trunking system might send individual 2-way ra-
dio user’s calls and response transmissions on different
frequencies, it is difficult to listen to trunked communica-
tions using a regular scanner. The PRO-90 lets you select
and monitor the data channel frequency sent with a 2-way
radio user’s transmission, so you can hear the call and re-
sponse for that 2-way radio user and easily “follow” the
conversation.
The scanner also lets you scan conventional transmis-
sions, and is preprogrammed with service-search banks
for convenience. By pressing a single button, you can
quickly search those frequencies most commonly used
by public service and other agencies without tedious and
complicated programming.
This scanner gives you direct access to over 31,000 excit-
ing frequencies, including police and fire departments,
ambulance services, and amateur radio services, and you
can change your selection at any time.
Your scanner also has these special features:
Triple-Conversion Circuitry
— virtually eliminates any
interference from IF (intermediate frequency) images, so
you hear only the selected frequency.
©
1997 Tandy Corporation.
All Rights Reserved.
RadioShack is a registered trademark used by Tandy Corporation.
HyperSearch and HyperScan are trademarks used by
Tandy Corporation.
Motorola, Smartnet, and Privacy Plus are trademarks of
Motorola, Inc.
20-520.fm Page 2 Wednesday, August 4, 1999 3:06 PM
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