RadioShack Pro 92 Handheld Trunking Scanner Owners Manual

31
LTR (E. F. Johnson) Mode
This sets the scanner to decode the talk group ID’s used
with an LTR system. This is a trunking system used pri-
marily by business or private communications service
providers, such as taxi cabs, delivery trucks, and repair
services. LTR systems encode all trunking information as
digital subaudible data that accompanies each transmis-
sion. Users on an LTR system are assigned to specific
talk groups, which are identified by the radio as a six-digit
number. The number is in the...

32
Motorola Mode
This sets the scanner to decode the talk group ID’s used
with Motorola trunking systems. These systems are used
by business and public safety groups to efficiently allo-
cate a small number of frequencies (as few as 5) to many
groups of users (as many as several thousand). To do
this, each group of users in the system is assigned to a
specific talk group. For example, the east side patrol of-
ficers might all be assigned to talk group 2160. One chan-
nel in the system is continuously...

33
For example, Police ¾
 East Patrol might be assigned to
group 12, making the full Fleet, Subfleet ID be 000-12. To
properly map the raw Type I data to the correct fleet-sub-
fleet format, you must program the correct fleet map into
the scanner. Fleet map information is widely available on
the internet for most Type I systems in use.
Type II systems talk groups are identified by a 5-digit
number. Valid talk group IDs are divisible by 16. If you try
to enter an invalid talk group ID, the scanner rounds...

34
When there is activity on an EDACS system, that infor-
mation is sent out on the control channel. The scanner
decodes the ID for the active talk group. In the Open
mode, the scanner then goes to the transmission and dis-
plays the talk group ID on the bottom line of the display.
In the Closed mode, the scanner only goes to transmis-
sions that have ID’s that match a talk group ID that you
have stored in the bank’s talk group ID list and have not
locked out.
Because EDACS scanning requires you to have...

35
OPERATION
TURNING ON THE SCANNER AND 
SETTING SQUELCH
1. Turn SQUELCH fully counterclockwise until the indi-
cator points to 
MIN before you turn on the scanner.
2. To turn on the scanner, turn 
VOLUME clockwise.
Welcome To Multi-System Trunking
appears on the display. After about 3 seconds, you
hear a hissing sound.
3. Turn 
SQUELCH clockwise, just until the hissing
sound stops.
Notes: 
• To listen to a weak or distant station, turn
SQUELCH counterclockwise. If reception is poor,
turn 
SQUELCH...

36
STORING KNOWN FREQUENCIES 
INTO CHANNELS
Good references for active frequencies are the Ra-
dioShack 
Police Call, Aeronautical Frequency Directory,
and 
Maritime Frequency Directory. We update these di-
rectories every year, so be sure to get a current copy.
Also see the supplied 
Police Call Trunking Guide.
Follow these steps to store frequencies into channels.
1. Press 
MANUAL, enter the channel number where
you want to store a frequency, then press 
MANUAL
again. M and the channel number appears...

37
• Your scanner automatically rounds the entered
frequency to the nearest valid frequency. For
example, if you enter a frequency of 151.473, your
scanner accepts it as 151.470.
•Press 
FUNC then press DELAY/1 to turn the delay
function on or off. If you want the scanner to
pause 2 seconds on this channel after a transmis-
sion ends before it proceeds to the next active
transmission, see “Using the Delay Function” on
Page 48. The scanner also stores this setting in
the channel.
• If you are storing...

38
3. Press TEXT. The cursor appears at the 3rd line on
the display.
4. Enter the text using the numeral keys (see “Text
Input Chart” on Page 39).
Note: If you make a mistake, press   or   to move
to the character you want to change.
For example input “HAM 6m” as follows:
• “H” is the second letter associated with 4 on the
keypad. Press 
4 then press 2.
• “A” is the first letter associated with 2 on the key-
pad. Press 
2 then press 1.
• “M” is the first letter associated with 6 on the key-
pad. Press 
6...

39
Note: If the channel is programmed for P/L, DPL, LTR,
MOT or ED mode, the scanner displays the mode infor-
mation on the 4th line.
Text Input Chart
Notes: 
• To access the numbers, after you press 
FUNC and 6,
press 
1, then press the desired number you want to
enter.
• To enter a lowercase character or a character from
the second set for key 
0, press FUNC after pressing
the first numeral key.
Press To Enter a Character from this Group
1
1, 2, 3, 4, 5, 6, 7, 8, 9, 0
2A, B, C 
FUNC 2a, b, c
3D, E, F...

40
FINDING AND STORING ACTIVE 
FREQUENCIES
You can search for transmissions within ten ranges of fre-
quencies, called a search bank. The search bank is divid-
ed into 10 search bands. You can change the bands with
the 60 preprogrammed search bands in the scanner (see
“Search Banks” on Page 25). You can also change the
search bank’s search ranges manually.
Notes:
• You can use the scanner’s delay feature while
searching the service bank. See “Using the Delay
Function” on Page 48.
• The scanner does not...