RadioShack Pro 92 Handheld Trunking Scanner Owners Manual

51
3. Press FUNC, then press 4. Confirm list
clear?
 1=YES Press other key for NO.
appears on the display. Press 1 to clear all lock-out
frequencies and 
List cleared appears on the
display for about 2 seconds. Press any key other
than 
1, to cancel clear.
PRIORITY
With the priority feature, you can scan through pro-
grammed channels and still not miss an important or in-
teresting call on a specific channel. When a channel is
selected as the priority channel and priority is turned on,
the scanner checks...

52
Note: This scanner cannot set a channel as the priority
channel if the channel’s receive mode is 
LTR, MOT, or
ED.
Follow these steps to program a weather channel as the
priority channel.
1. Press 
WX.
2. Select the weather channel you want to program as
the priority channel.
3. Press 
FUNC then press PRI. Pri appears on the dis-
play to the right of the frequency.
To turn on the priority feature, press 
PRI while scanning.
Priority ON (or Priority WX if you set the priority
to a weather channel)...

53
CHANGING THE RECEIVE MODE
The scanner is preset to the most common AM or FM re-
ceive mode for each frequency range. The preset mode
is correct in most cases. However, some amateur radio
transmissions and trunked systems do not operate in the
preset mode. If you try to listen to a transmission when
the scanner is not set to the correct receive mode, the
transmission might sound weak or distorted.
If you want to listen to and watch the private line or trunk-
ing transmission in the closed mode, you...

54
CHANGING THE FREQUENCY STEP
The scanner searches at a preset frequency step for
each frequency range. Press 
STEP to change the step in-
crement when moving between frequencies of a search
band or follow these steps to change steps in a specific
bank.
1. Press 
SEARCH.
2. Select a bank.
3. Press 
FUNC then STEP. **PAUSED** displays on
Line 3.
4. Press 
STEP continuously until you reach the desired
step.
5. Press 
FUNC then STEP to return to scanning.
These are the changeable frequency steps your...

55
Note: If you turn on this feature, the scanner might not re-
ceive weak signals.
To turn off the attenuator, press 
ATT again. A disappears
from the display.
This setting is stored for each channel.
USING THE DISPLAY BACKLIGHT
You can turn on the display’s backlight for easy viewing in
dimly lit areas. Press 
LIT to turn on the display light for 5
seconds. To turn off the light before it automatically turns
off, press 
LIT again.
TURNING THE KEY TONE ON AND 
OFF
Each time you press any of the...

56
Note: You cannot activate the keylock when in the middle
of programming.
To turn on the keylock, press 
FUNC then press  /LIT.
Keyboard Locked appears on the display for about 1
second. 
Keyboard Locked appears when you press
any key after locking the keypad.
To turn off the keylock, press 
FUNC then press  /LIT.
The scanner beeps once and 
Keyboard Unlocked
appears on the display about 1 second.
CHANGING THE DISPLAY 
CONTRAST
1. Press MANUAL.
2. Press 
FUNC then press 9. Use Up/Down keys to
set...

57
TRUNKING OPERATION
The PRO-92 scanner tracks transmissions that use the
Motorola® Type I and Type II (such as Smartnet and Pri-
vacy Plus) and hybrid analog trunking systems, plus GE/
Ericsson (EDACS) and EF Johnson (LTR) type systems,
which are extensively used in many communication sys-
tems. 
Trunking systems allocate a few frequencies to many dif-
ferent users. When the mobile unit transmits a signal, one
frequency is chosen from among the allocated frequen-
cies in that trunking system. The...

58
PROGRAMMING TRUNKING 
FREQUENCIES
Program trunking frequencies just as you program nor-
mal, non-trunked frequencies, but store the appropriate
mode (MO, ED, or LT) with each frequency.
Notes:
• EDACs systems must be stored in banks by them-
selves. You can, however, mix Motorola, or LTR and
conventional channels in a bank.
• During Trunking operation, lock out all data chan-
nels. (See “Locking Out Channels or Frequencies”
on Page 48.)
1. Press 
PGM and select the bank, then press TRUNK to
enter the...

59
5. Press 8 and the display below appears.
6. Enter the size code information supplied with the
Type I system information, referring to the instruction
that appears on the display. If the information was
not supplied, try these common fleet maps.
B
L
O
C
KSize Code
123 4 5 6 78
0 S11 S4 S4 S12 S4 S3 S10 S1
1 S11 S4 S4 — S4 S10 S10 S1
2 S11 S4 S4 S4 S12 S4 S11 S2
3 S11 S4 S4 S4 — S4 S4 S2
4 S11 S4 S4 S4 S4 S12 S4 S3
5 S11 S4 S4 S4 S4 — S4 S3
6 S11 S4 S12 S4 S4 S12 S4 S4
7 S11 S4 — S4 S4 — S4 S4
B
L
O
C...

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7. Enter the size code and press ENTER for each entry.
If you make a mistake, press 
CL and enter the cor-
rect size code.
Note: The default setting of the bank is for Motorola
Type II. However, after you set Type I and if you
want to return to Type II, press 
15 at Step 5.
8. To confirm the input, repeat Steps 1–6 and press
ENTER. Each time you press ENTER, you confirm the
size code. If you find an error, press 
CL and begin
again at Step 1.
TALK GROUP ID’S
You can program up to 100 talk group ID’s...