Radio Shack PRO-94, Manual

Page: 4 / 21

8/17/2015 Easier to Read Pro 94 Scanner Manual
http://marksscanners.com/94/94.shtml 4/21
calls and responses for users and more easily "follow" conversations than with a conventional scanner.
This scanner trunktracks the following types of systems:
Motorola Type I
Motorola Type II
Motorola Type IIi Hybrid
Motorola Type II Smartnet Motorola Type II Smartzone
Motorola Type II Smartzone Omnilink
EDACS Standard (Wide)
EDACS Networked (Wide)
When you program Motorola and EDACS system frequencies into the scanner, one frequency is the control (or data) channel, and
the rest are voice frequencies shared by all the users. There may be 3 or 4 frequencies assigned as (primary or alternate) control
channels but only one control channel will be active at a time. EDACS systems need all the frequencies for the system
programmed and in the correct
LCN (Logical Channel Number) order.
The control channel is continually transmitted to the field units and has a sound similar to listening to a boat engine over the phone
(in manual mode; you won't hear this when you are trunking the system.) This control channel is also a good check to see if you
can trunktrack the system. If you can't hear a control channel when you step through the trunking frequencies (in manual mode),
you either don't have all the frequencies or are too far away to receive the control channel and the system. Motorola systems are
limited to a maximum of 28 frequencies per system or site. Ericsson EDACS systems are limited to 25 frequencies per system or
site. Motorola and EDACS systems can be either analog, digital, or mixed (digital and analog talkgroups). This scanner can't
monitor digital systems.
Trunkscanning is basically scanning IDs that are programmed into ID locations (same concept as frequencies into channels.) You
can then trunkscan just the programmed IDs. Trunktracking is searching for all IDs in a system (same concept as searching for
frequencies in a band).
Radio Reference.com has an excellent page explaining the various types of trunking systems in more detail here .
Understanding IDs
Contents
Motorola IDs come in two formats: Type I and Type II. Each format displays and uses Talk Group IDs in slightly different ways. Type
I/II hybrid systems use both Type I and Type II formats for Talk Group IDs.
Type I IDs are in the format FFF­SS where FFF is the fleet and SS is the sub­fleet. Type I systems are usually organized
with different IDs assigned to different fleets. For example, a valid fleet/subfleet ID identifying all detectives within a police
department might be 000­12, where 000 identifies all police IDs and 12 identifies the Detective division. To properly trunk
a Type I system, you have to program the fleet map for the system.
Type II IDs are identified by a 5­digit number.
EDACS IDs come in two formats: AFS (Agency­Fleet­Subfleet) and Decimal.
AFS IDs are in the form AA­FFS where AA is the agency, FF is the fleet, and S is the sub­fleet. EDACS systems are
organized with different IDs assigned to different fleets and agencies. For example, a valid agency/fleet/subfleet ID
identifying all detectives within a police department in an agency might be 06­101, where 06 identifies the agency
(Police), 10 identifies the Police division (East side), and 1 identifies the Detective division.
Decimal IDs are shown as a decimal number from 0 to 2047.
You can find a chart showing Decimal and AFS equivalents here: Conversion Chart .
Understanding Banks
Contents
Service Banks
The scanner is preprogrammed with all the frequencies allocated to the weather, ham, marine, aircraft, and public safety services.
This helps you quickly find active or unknown frequencies instead of doing a limit search. Also, they are good for finding frequencies
when traveling. The scanner also has 1 programmable limit search and a direct search witch allows you to start searching at a
specific frequency.
Channel Storage Banks
All the channels are divided into 2 main bank groups, A and B. Channel numbers start at 1 in bank 1 and go up to 500 in bank 10.
Each main bank group has 10 banks of 50 channels. You can only use either A or B, not both. Use each channel­storage bank to
group frequencies, such as those for police, fire, ambulance, aircraft, or trunking systems.
You can also program your trunking frequencies and conventional frequencies into the same banks as well to utilize channel space
better. By simply locking out the trunked frequencies, you can then either trunk a bank or scan a bank. The scanner will still trunk the
locked out frequencies.
Tip: Theoretically, you can also program more than one trunking system into a bank as long as you can only monitor one at a time,
in different locations, far enough apart, so the system you are monitoring won’t interfere with any other system (which would confuse