RadioShack Pro 2051 Trunk Track Scanner Owners Manual

Note: The smallest channel appe ars on the display when you store same frequency 
in two 
or more channels. 
Memory Lock 
To avoid the accidental programming frequen cies and talk group IDs, you can lock 
the 
memory with Memory Lock. 
Press and hold  M-LOCK for 2 seconds to activate this feature ,and “ M-LOCK” 
appears on 
the display. If you press  E to program memory, you will hear two beeps. To 
deactivate 
Memory Lock, press and hold  M-LOCK for 2 seconds again. 
Scanning Private Bank 
1. After...

Hold/Resume 
If you want to stop on a channel during scanning, press 
HOLD/RESUME. 
If you want to resume scanning, press  HOLD/RESUME. 
Direct channel access: 
There are several ways to access a specific channel quickly. 
1. Press HOLD/RESUME. 
2. Using the keypad, enter the channel number. 
3. Press HOLD/RESUME  again. 
Note: You can also use the  PVT,   or   key instead of 
pressing  HOLD/RESUME . 
Channel Lockout 
You can lockout any channel so it is not  checked during normal scanning. You can 
also...

You can restore all locked-out channels in a bank only when a bank is selected for 
scan. If 
you have deselected a bank and you want to  restore all of its locked-out channels 
using the 
steps below, you must press  PVT until “ PVT” appears and then enter  the number of 
the 
bank on your keypad. 
1. Press  HOLD/RESUME. 
Note: You must be in Hold mode before  restoring all locked-out channels. 
2. Press and hold L/O for about 2 seconds. You will  hear two beeps when all the 
channels 
have been...

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25 
Service Scanning 
The service scan feature allows you to rotate through the following nine\
 service 
banks. 
q Local Police and County Sheriffs *1 
w  Fire and Emergency Medical Service 
e News Media 
r Weather (NOAA, weat her and Canadian Coast Guard broadcasts) 
t CB Band 
y  Aircraft *2 
u  Railroads 
i Marine Band 
o  Department of Transportation *1 
*1) Frequencies are pre-programmed on every U.S. state. 
*2) Except Aeronautic Radio  Navigation (108-117.9875 MHz) 
1. Press SVC to...

To set a Search Bands, enter into the Band Search mode. 
1. Press SRCH. The upper and lower limits of the Bands 
currently selected are on the display. 
2. Use the   or   key to select the band you want to search. 
Wait for about two seconds and the scanner will begin 
searching that band. Or press  HOLD/RESUME to begin 
immediately. 
Notes:• You must set the Search Bands prior to any searching. 
• The scanner automatically increases it s search speed up to 300 steps per second 
for bands having 5 kHz...

To skip over a frequency, press L/O when stopping on the frequency you want to 
skip or 
when in Search Hold mode. 
Note : You can program up to 100 skip frequencies. 
The 101st skip frequency entered causes the first skipped frequency to u\
nlock. 
To restore a Locked out/Skipped channel. 
1. Select the desired frequency by using the   or   key in Search Hold mode. 
2. Press  L/O, and then press  HOLD/RESUME. 
To restore all skipped fr equencies, press and hold  L/O for 2 seconds in Search Hold 
mode....

––– OR ––– 
1. For Search mode, while searching press DELAY. 
2. “DLY ” will appear on the display. 
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29 
Trunk Tracking 
Your 20-426 is tracks three major types  of trunked radio systems. These systems 
are 
described here. 
✎ MOTOROLA - Including Type I, Type II, Hybrid, SMARTNET, and Privacy Plus. 
Motorola systems are widely used by public  safety and business users. Most are on 
the 800 MHz band, and recent systems are appearing on other bands. (see page 
43)....

Setting the Squelch 
For trunked reception, a good setting for the SQL control is in the 
center of the range wit h the color marker pointing up. See the 
illustration. 
If it is set too high, it could prev ent your scanner from locking to the 
Control Channel reliably. If it is set too low, it will slightly delay finding 
the Control Channel. The best setting is the same as for conventional 
reception, and is critical for monitoring trunked systems. 
SQL push 
FLASH 
MUTE ALERT 
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30 
Programming...

You will hear two beeps, and “BANK” and “ TRUNK ” will begin to flash on the 
display. 
2. Select the bank you want to  store the frequency by using the 
keypad. 
3. Select the system you want to track by using the  or   key, 
then press  E. 
List of trunking systems as follows: 
E2-800 (Motorola Type II 800 MHz) 
E2-Hi (Motorola Type II VHF 136-174 MHz) * 
E2-UHF (Motorola Type II UHF 406-512 MHz) * 
E1 (Motorola Type I and Hybrid) ** 
Ed (EDACS® Wide Band: 9600 band)*** 
Ed SCt (EDACS Scat) 
Lt (LTR)...

Trunk Programming mode. 
Programming Talk Group ID/Scan Lists 
Scan Lists 
Each bank of your 20-426 can be a trunk tracking bank and it can be a conventional 
scanning 
bank. When you designate a bank as a trunking bank, your scanner sets up 5 Scan 
Lists, 
which are simply lists used to store your favorite Talk Group IDs. Each list can 
contain up to 
10 IDs, so you can store a total of 50 IDs for each trunk tracking bank. (250 IDs if 
you use 
all the banks as trunking banks!) 
Scan Lists help you...