RadioShack Pro 2050 Trunk Track Home Scanner Owners Manual

21
SPECIAL FEATURES
DELAY
Many agencies use a two-way radio
system that might have a period of 2
or more seconds between a query and
a reply. To keep from missing a reply,
you can program a 2-second delay
into any channel or frequency. The
scanner continues to monitor the fre-
quency for 2 seconds after the trans-
mission stops before resuming
scanning or searching.
To program a 2-second delay:
• If the scanner is scanning chan-
nel-storage banks and stops on
an active channel where you want
to store a...

22
LOCKING OUT 
CHANNELS AND 
FREQUENCIES
You can scan existing channels or
search frequencies faster by locking
out channels or frequencies that have
a continuous transmission, such as a
weather channel.
Note:
 If you just want to skip over a
lengthy transmission (such as a mo-
dem signal), see “Skipping Data Sig-
nals” on Page 23.
Locking Out Channels
To lock out a channel while scanning,
press 
L/O when the scanner stops on
the channel. To lock out a channel
manually, select the channel and
press 
L/O...

23
TURNING THE KEY TONE 
ON AND OFF
To turn the key tone off, turn off the
scanner. Then, while holding down
L/O/SKIP, turn on the scanner. OF
bEEP
 appears.
To turn the key tone back on, repeat
the above procedure. 
oN bEEP ap-
pears.
CHANGING SEARCH 
SPEEDS
The PRO-2050 has two search
speeds for a limit search.
To switch between the normal and Hy-
perSearch speeds, during a limit
search, press 
SPEED. SEARCH flash-
es during HyperSearch.
Note: 
You can use HyperSearch only
in the 5 kHz step bands...

24
PRIORITY
The priority feature lets you scan
through channels and still not miss im-
portant or interesting calls on specific
channels. You can program one
stored channel in each bank as a pri-
ority channel (for up to a total of 10
stored channels). As the scanner
scans the bank, if the priority feature is
turned on, the scanner checks the pri-
ority channel for activity every 2 sec-
onds.
The scanner automatically desig-
nates each banks first channel as its
priority channel. Follow these steps to...

25
TYPES OF TRUNKING 
SYSTEMS
Your trunk tracking scanner can moni-
tor two basic types of systems — 
Type
I
 and Type II. Instead of selecting a
specific frequency to transmit on, a
trunked system chooses one of sever-
al frequencies in a 2-way radio user’s
talk group when that user presses
PTT (push to talk). Thus, trunking sys-
tems allocate a few frequencies
among many different users, but the
way Type I and Type II systems do
this is slightly different. One important
distinction between these...

26
SETTING THE SCANNER 
TO THE TRUNK 
TRACKING MODE
Press TRUNK to switch between the
scanner’s conventional and trunk
tracking modes.
SETTING SQUELCH FOR 
THE TRUNK TRACKING 
MODE
Your scanner’s squelch setting is au-
tomatically adjusted in the trunking
mode, which means you do not need
to manually adjust squelch while
tracking trunked transmissions. How-
ever, the squelch setting can affect
how fast your scanner acquires the
data channel, and, in some instances,
can prevent your scanner from acquir-...

27 2. Select the bank you want to store
the trunked system’s frequencies
in by pressing a number key. The
scanner automatically selects the
first channel in the bank.
3. Use the number keys to enter the
trunked system’s frequencies,
then press 
E.
4.
Note: If you entered an invalid fre-
quency in Step 3, the scanner
beeps, the channel number
flashes and 
Error appears. If
this happens, press 
CLEAR to
clear the frequency, then repeat
Step 3.
5. Press either 
MANUAL or s to
select the next channel in the...

28
Note: To see the bank currently in
use for about 5 seconds, press
DATA while in the trunk tracking
mode.
3. To return to conventional scan-
ning, press 
TRUNK again.
Hint: While scanning, you will not
know exactly whom the IDs are as-
signed to until you listen awhile or until
you locate ID lists in frequency guides
or on internet sites such as
www.trunkscanner.com. Within a few
minutes, you can usually figure out if
what you are listening to is a police,
fire, or emergency medical 2-way ra-
dio user....

29
To lock out an ID, press L/O when the
ID appears.
The ID is locked out, and the next ac-
tive ID appears.
Unlocking a Single ID
1. Hold down L/O until you hear two
short beeps.
2. Repeatedly press t or s to select
the ID you want to unlock.
3. Press 
L/O.
The ID is unlocked and the next
locked ID appears.
4. Press 
SEARCH to continue the
scanner’s previous function.
Unlocking All IDs
Hold down L/O until you hear two short
beeps. Then press 
E to unlock all the
IDs at once.­ The scanner beeps
twice....

30
Monitoring IDs
You can use your scanner’s display to
monitor the frequencies in a trunked
system for activity. You cannot hear
conversations in this mode, but this is
an excellent way to determine which
talk groups are the most active. To set
the scanner to monitor IDs, hold down
SEARCH until the scanner beeps
twice. 
SEARCH flashes, and all active
talk group IDs appear in succession.
To stop monitoring IDs, press
SEARCH again.
Note: When you monitor IDs, locked-
out IDs also appear.
CHANNEL ACTIVITY...