The Pro-95 RadioShack Handheld
Scanner is one of a new
generation of scanners designed
to track Motorola? Type I and II
(such as Smartnet? and Privacy
Plus?) and hybrid analog trunking
systems, and GE/Ericsson
(EDACS?) type systems, which
are extensively used in many
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
set of frequencies. Instead of
selecting a specific frequency for a
transmission, the user simply
selects a talk group. The trunking
system automatically transmits the
call on the first available
frequency, and also sends a code
that uniquely identifies that
transmission.
Since the trunking system might
send a call and its response on
different frequencies, it is difficult
to listen to trunked
communications using a regular
scanner. The trunking scanner
monitors the data sent with a 2-
way radio transmission, so you
can hear the call and response for
that user and more easily follow
the conversation.
The scanner also lets you scan
conventional transmissions, and is
preprogrammed with service
search banks for convenience. By
pressing a single button, you can
quickly search those frequenciesmost commonly used by public
service and other agencies.
This scanner gives you direct
access to over 59,000 frequencies
including those used by police and
fire departments, ambulance
services, government agencies,
air, and amateur radio services.