RadioShack PRO-92 - Manual

©

2000 Tandy Corporation.

All Rights Reserved.

RadioShack and RadioShack.com are trademarks used by Tandy Corporation.

ADDENDUM — Please read before using this equipment.

PRO-92 500-Channel Portable Trunking Scanner

ADDENDUM FOR OPTIONAL
ENHANCEMENT VERSION

This addendum describes the changed operations of your scanner.

Monitoring/Identifying Talk Groups

For EDACS and Motorola (above 806 MHz range) trunking systems,
the scanner monitors the control channel between each transmis-
sion to identify talk groups. For some Motorola (under 512 MHz
range) and LTR systems, the scanner uses the subaudible data sent
with each transmission to identify talk groups.

Locking Out Data Channels

If you are scanning VHF and UHF trunking frequencies under the
512 MHz range using subaudible data and are not using a base fre-
quency and offset, lock out all data channels. See “Locking Out
Channels or Frequencies” on Page 48. Turn off the scanner to re-
move the lockouts.

Receiving Motorola Trunking Systems in the
UHF-Lo Band

You can program the scanner to receive transmissions in the UHF-
Lo band (380–512 MHz) of the Motorola trunking system. You can
receive these transmissions by:

• Checking the trunking system’s control channel. You must pro-

gram the system’s base frequency and offset frequency to do
this.

• Decoding the subaudible data transmitted with the signals.

When you do this, the scanner might detect wrong IDs, but you
can easily receive trunking frequencies without programming
the base and offset frequencies.

Notes:

• Base and offset frequencies vary for each type of trunking sys-

tem. You can get information about these frequencies for the
trunking system you want to scan using www.trunkscan-
ner.com, other Internet sources, or locally published guide-
books.

• The scanner automatically decodes subaudible data it receives

in the VHF band.

• If you try to enter an offset frequency in the VHF and UHF-Hi

bands (137 to 174 and 806 to 960 MHz), the scanner will ignore
the entry.

Programming Motorola Trunking Frequencies in the
UHF-Lo Band

1. Select the bank, then press

PGM

to enter the program mode.

2. Store the base frequency into channel 00 of the bank you

selected, then store the trunking frequencies into subsequent
channels in the same bank (see “Storing a Frequency While
Searching for a Specified Channel” on Page 42).

Note: You must store frequencies using the subaudible trunking
method in banks mode by mode.

3. Press

TRUNK

then repeatedly press

MODE

to select

MO

(Motor-

ola).

4. Press

FUNC

then

9

.

12.5

kHz

(the default offset frequency)

appears.

5. Repeatedly press

FUNC

then

9

to select the offset frequency

you want (

12.5 kHz

,

25.0 kHz

, or

50 kHz

).

Note: Offset frequencies above 50 kHz do not appear and are
used only for subaudible decoding mode.

6. Program the trunking frequencies (see “Programming Trunking

Frequencies” on Page 58).

Setting Squelch for Trunk Scanning

Your scanner automatically mutes the audio during trunk scanning
when it decodes control channel data. However, we recommend you
turn

SQUELCH

clockwise and leave it set to a point just after the hiss-

ing sound stops. This lets the scanner quickly acquire the data chan-
nel.

Using an Optional PC Interface Kit

You can increase the number of preprogrammed frequency ranges
your scanner can receive (up to 100) using an optional PC interface
kit (available at your local RadioShack store).

Using the Supplied Clone Cable

You can transfer the programmed data to and from another Ra-
dioShack Cat. No. 20-522A or Cat. No. 20-196 scanner using the
supplied clone cable.

Pausing on a Frequency

To pause on a frequency, press

FUNC

then

TUNE

when the scanner

stops on the frequency, or turn

SQUELCH

counterclockwise.

20-522

05A00

Printed in Japan

RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102

20-522AD.fm Page 1 Tuesday, May 9, 2000 1:13 PM