RadioShack Pro 92a Vhf Uhf Scanner Reciever Owners 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 JapanRadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
20-522AD.fm  Page 1  Tuesday, May 9, 2000  1:13 PM 
						

							2
Changes to “Clearing All Lock Out Frequencies in a 
Search Bank” on Page 50 of your Owner’s Manual
• Step 1 should read “Press FUNC then press SEARCH. “
• Step 2 should read “Select the search bank from which you
want to clear all locked-out frequencies using   or  .
• Please add “Press 
SEARCH to continue searching” as Step 4.
Changes to “Changing the Frequency Step” on 
Page 54 of your Owner’s Manual
• Step 3 should read “Turn SQUELCH fully counterclockwise until
the indicator points to 
MIN” instead of “Press FUNC then STEP.”
**PAUSED** appears on Line 3.
• Step 5 should read “Turn 
SQUELCH clockwise and leave it set to
a point just after the hissing noise” instead of “Press 
FUNC then
STEP to return to scanning.”
Digital Weather Alert Feature
This feature supercedes “Weather Alert Feature” on Page 47 of your
Owner’s Manual.
The weather service precedes each weather alert with a digitally-
encoded SAME signal, then a 1050 Hz tone. You can set the scan-
ner so, if you are monitoring a weather channel with a digitally-
encoded SAME signal when an alert is broadcast, the scanner will
decode and display the SAME message, showing the type of alert
being broadcast (or 
Unknown Message if it does not recognize
the event code).
To set the scanner to decode and display SAME messages, press
FUNC then WX while you listen to the weather channel. DIG WX
STBY
 and Cancel: F+WX appear.
To turn off SAME standby mode, press 
FUNC then WX. DIG WX
STBY
 disappears.
Notes:
• The scanner does not display the actual location referenced by
SAME messages. It uses only the message portion of the
SAME signal.
• Your scanner can also receive weather alert tones (see “Prior-
ity” on Page 51).
20-522AD.fm  Page 2  Tuesday, May 9, 2000  1:13 PM