Radio Shack Pro 2055 User manual

Please read this user’s guide before installing,
setting up and using your new product
www.radioshack.com
20-428
PRO-2055 1,000 Channel
Triple Trunking
Mobile/Base Scanner
NOTE: Actual product may vary from the images found
in this document.

2
Contents
user’s guide • quick start guide • preloaded data addendum
Thank you for purchasing your PRO-2055 triple trunking
scanner from RadioShack. You can mount your scanner
in a fixed position and use it as a base scanner or you can
use it as a mobile scanner by mounting it in a vehicle. No
additional hardware or add-on cards are needed. This
scanner is one of a new generation of scanners designed
to track Motorola® Type I and II (such as Smartnet®
and Privacy Plus®) and hybrid analog trunking systems,
GE-Ericsson (EDACS®) type systems, and EF Johnson
(LTR) type systems which are extensively used in many
communication systems.
AC adapter
DC cable w/fuse
DIN sleeve and keys (2)
Scanner Antenna
Mounting
bracket
Knob (2)
Rubber washer (2)
Lock washer (2)
Screw (2)
Rubber foot (3)

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The Basics
contents
your scanner’s keypad 7
your scanner’s rear view 9
your scanner’s display 10
step 1: install your scanner 11
mounting your scanner in your dashboard 11
mobile mounting in your vehicle 12
using your scanner as a base station 13
step 2: power your scanner 14
from a wall outlet 14
through your vehicle’s ignition 15
from your vehicle’s cigarrette lighter 16
step 3: connect your scanner 17
connect the supplied antenna 17
connect an external antenna 17
connect an external speaker or headphones 18
quick start 20
understanding your scanner’s modes 20
setting up your scanner 29
turning on the scanner and setting squelch 29

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The Basics
storing known frequencies into channels 30
CTCSS and DCS 32
storing trunking frequencies into channels 35
storing text tags 36
finding and storing active
frequencies 40
searching a preprogrammed frequency
range 40
band charts 42
searching active frequencies in a range 47
manually tuning a frequency 49
listening to the weather band 50
skywarn 52
using frequency copy 53
Signal Stalker II 55
scanning the channels 57
using CTCSS and DCS 59
deleting frequencies from channels 59
deleting all frequencies in a channel bank 60
using delay 60
locking out channels or frequencies 61
priority 63
changing the receive mode 65
using the attenuator 66
turning the key tone on and off 67
using the dimmer 67
changing the display contrast 67
cloning the programmed data 68

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The Basics
trunking 69
how trunking works 69
setting squelch for trunking mode 71
programming trunking frequencies 71
care 85
replacing fuse 85
resetting/initializing your scanner 85
service and repair 86
birdie frequencies 86
specifications 88
The FCC wants you to know 91
scanning legally 91
glossary 93
FAQs (Frequenctly Asked Questions) 95
warranty 96

6
The Basics
©2005 RadioShack Corporation.
All Rights Reserved.
RadioShack, RadioShack.com. Hypersearch, Hyperscan, and Adaptaplug are
trademarks used by RadioShack Corporation.
Motorola, Smartnet, ASTRO and Privacy Plus are registered trademarks of
Motorla Inc.
EDACS is a registered trademark of MA-COM Inc.
LTR is a registered trademark of EF Johnson.

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The Basics
your scanner’s keypad
TRUNK — stores the trunking ID code or holds
the trunking ID while scanning.
L/OUT — locks out selected channels and ID
codes, and skips specified frequencies during
a search.
CLEAR — clears an incorrect entry.
PROG — programs frequencies in selected
channels.
PWR/VOL/SQ — long knob turns OFF/ON, and
controls volume. Short knob controls squelch.
PC/IF — connect data cable for cloning or
connecting to a PC.
s— attach headphones with 1/8” jack here.

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The Basics
ATT — Press to
activate attenuation (reduce
scanner sensitivity, block
strong signals). Press again to
deactivate attenuation.
PAUSE — pauses search
or tune operation.
DIM — adjusts the
backlight level (Light, Dark,
or OFF).
TUNE — Press TUNE,
PAUSE then eor dto tune
to a frequency.
FUNC — press in
combination with other keys
to perform various functions.
WX/— scans through
the seven preprogrammed
weather channels, or jumps
to a Skywarn channel you
programmed (997-999).
PRI — turns the
priority function on or off.
TEXT — press to input text. MODE — press to
change the receive mode.
SRCH — press to search
through search banks.
SCAN/— scans
through the programmed
channels, or activates the
Signal Stalker II function.
MAN — press to manually
enter a channel number.
eor d— press to
scan or search in either
direction.

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The Basics
EXT SP — connect an
external speaker here.
ENT — press to
confirm frequency
and text entries.
your scanner’s rear view
ANT — connect the
supplied antenna or an
external antenna here. DC 13.8V — connect a
power source here.
SCREW HOLE — use to mount
the scanner in a car with some
hardware (screw not supplied).
RESET—
press to
reset your
scanner.
Press to enter a number or a
character (in text mode).
./DELAY — press to enter a
decimal point, space, or hyphen.
Press to program delay time for a
channel/search bank.

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The Basics
your scanner’s display

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The Basics
step 1: install your scanner
You can mount your trunking scanner in your vehicle,
install it for mobility, or install it as a base station.
mounting your scanner in your
dashboard
If you are unsure about how to install your scanner in
your vehicle, consult your automobile manufacturer,
dealer, or a qualified installer. Before installing, confirm
your scanner fits in the
desired mounting area and
you have all the necessary
materials. Your scanner
requires a 2 x 71/8x 5 5/16
inch (50 x 180 x 135 mm)
mounting area.
1. Remove the four
rear screws and pull
off the black case
before installing your
scanner.
2. Install the DIN sleeve
into the opening in
your dashboard, lip
facing out.
3. Push out the top and
bottom tabs to hold
the sleeve firmly in
place.
4. Slide the scanner into the sleeve until it locks in
place.



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The Basics
To remove your scanner from the DIN sleeve,
insert the two keys straight into the scanner’s front
panel. Then, remove the scanner by pulling front
panel.
When mounting in your dashboard, you will need
to connect an external antenna and an external
speaker.
mobile mounting in your vehicle
You can mount your scanner under the dashboard, or
on top of it, using the mounting bracket.
1. Attach the three protective rubber feet to the
mounting bracket
when you use
the scanner on a
flat surface. Do
not use them
when you mount
the bracket with
screws.
2. Use the supplied
mounting
bracket as a
template to mark
positions for the
two mounting
screws.
3. At the marked
positions, drill holes slightly smaller than the
screws.
Note
Note



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The Basics
4. Remove the paper backing from each washer and
stick one inside of each bracket’s ear, aligning the
washer’s hole with the bracket’s hole.
5. Attach the mounting bracket to your vehicle’s
surface using the supplied screws and lockwashers.
6. Slide the scanner into the bracket, aligning the
scanner’s holes with the holes in the bracket, and
then screw the mounting knobs into the scanner.
When drilling holes, be sure to avoid obstructions
behind the mounting surface. Consult a qualified
installer if in doubt.
using your scanner as a base station
You can place your scanner on a desk, shelf, or table
to use it as a base station. Since the speaker is on
the bottom of the scanner, you may want to use the
mounting bracket to elevate your scanner off the
surface for better sound. Follow the mobile vehicle
mounting instructions above to affix your scanner to a
desk, shelf, table or other flat surface (except that the
bracket will be below the scanner).
Note
Note

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The Basics
step 2: power your scanner
You can power your scanner from a wall outlet,
through your vehicle’s ignition, or from your vehicle’s
cigarette lighter.
from a wall outlet
1. Connect the tip of the supplied AC adapter to the
DC 13.8V jack at the rear of your scanner.
2. Plug the AC adapter into your wall outlet.
You must use a Class 2 power source that supplies
13.8V DC and delivers at least 600mA. Its center
tip must be set to positive and its plug must fit the
scanner’s DC 13.8V jack. Using an adapter that does
not meet these specifications could damage the
scanner or the adapter.
To prevent electric shock, do not use the AC
adapter’s polarized plug with an extension cord,
receptacle, or other outlet unless you can fully
insert the blades to prevent blade exposure.
Note
Note

Warning!
Warning!

15
The Basics
Note
Note
Note
Note
through your vehicle’s ignition
1. Disconnect the cable from the negative (-) terminal
of your vehicle’s battery.
2. Ground the black wire
of the supplied DC
power cord to your
vehicle’s chassis.
Be sure the grounding
screw makes complete contact with the metal
frame of your vehicle.
3. Connect the red wire of the supplied DC power
cord to a voltage source that turns on and off with
the ignition switch, such as a spare accessory
terminal in your vehicle’s fuse box.
4. Insert the power
cord’s barrel plug
into the scanner’s
DC 13.8V jack.
5. Reconnect the cable
to the negative
(-) terminal of your
vehicle’s battery.
You must use a power source that supplies 12V DC
and delivers at least 600 mA. Its center tip must be
set to positive and its plug must fit the scanner’s
DC 13.8V jack. The supplied DC power cord meets
these specifications. Using a power cord that does
not meet these specifications could damage the
scanner or the adapter.
Rear View

16
The Basics
from your vehicle’s cigarrette lighter
To power your scanner from a 12V power source in
your vehicle, such as a cigarette-lighter socket, you
need a 12V, 600 mA DC cigarette-lighter adapter (not
supplied), available at your local RadioShack store.
1. Insert the adapter’s barrel plug into the scanner’s DC
13.8V jack.
2. Plug the adapter’s other end into your vehicle’s
cigarette lighter or power socket.
When you use a cigarette-lighter adapter, you
might hear electrical noise from your engine while
scanning. This is normal.
Notes
Notes

17
The Basics
step 3: connect your scanner
connect the supplied antenna
Push the antenna onto
your scanner’s antenna
connector and rotate
until it locks into place.
Your scanner’s
sensitivity to various
frequencies depends
on its location and the antenna’s length. For best
reception, adjust the antenna’s length as follows:
Frequency Antenna Length
25-54 MHz Extend fully
108-174 MHz Extend 4 segments
216-225 MHz Extend 3 segments
225-406 MHz Extend 2 segments
406-1300 MHz Collapse fully
connect an external antenna
You will need to connect an external antenna when you
mount your scanner in
the dashboard of your
vehicle. You may also
want to connect an
external antenna if you
use your scanner as a
base station.

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The Basics
Your local RadioShack store sells a variety of antennas.
Always use 50-ohm coaxial cable, such as RG-58 or
RG-8, to connect an outdoor antenna. For lengths
exceeding 50 feet, use RG-8 low-loss dielectric coaxial
cable. If your coaxial cable does not have a BNC
connector, you will also need a BNC adapter (not
supplied).
Use extreme caution when installing or removing
an outdoor antenna. If the antenna starts to fall,
let it go! It could contact overhead power lines.
If the antenna touches a power line, touching
the antenna, mast, cable, or guy wires can cause
electrocution and death. Call the power company
to remove the antenna. Do not attempt to do so
yourself.
connect an external speaker or
headphones
When you mount your scanner in your dashboard,
you will need to connect an external speaker or
headphones.
Connect external
speaker here
Connect
headphones here
Warning!
Warning!

19
The Basics
listening safely
To protect your hearing, follow these guidelines when
you use headphones.
•Adjust VOL (volume) to its lowest level before
putting on headphones. With the headphones on,
adjust VOL to a comfortable level.
• Avoid increasing the volume once you set it. Over
time, your sensitivity to volume decreases, so
volume levels that do not cause discomfort might
damage your hearing.
• Avoid listening at high volume levels. Prolonged
exposure to high volume levels can cause
permanent hearing loss.
traffic safety
Do not wear headphones while driving. This can create
a traffic hazard and is illegal in some areas. Even
though some headphones let you hear outside sounds
when you listen at normal levels, they still can present
a traffic hazard.

20
The Basics
quick start
To help familiarize yourself with the scanner’s
functions, keypad, and available frequencies, you can
utilize one of these four features before you begin
programming the scanner.
Signal Stalker II — searches nearby strong signals
quickly. See “Signal Stalker II”.
Preprogrammed Search Banks — allow you to listen to
frequencies and decide which frequencies you want to
store when you are ready to program the scanner. See
“Searching a Preprogrammed Frequency Range”.
Manual Tuning — allows you to manually move
through the entire range of available frequencies. (See
“Specifications” for a list of the available frequency
ranges.)
Weather Radio — allows you to listen to NOAA
weather broadcasts without programming. See
“Listening to the Weather Band”.
understanding your scanner’s modes
You can program each channel with any of seven
receive modes (AM, FM, CT, DC, MO, ED, and LT).
Each receive mode affects how your scanner operates
when scanning and receiving transmissions.
Trunked modes (MO, ED and LT) can only be
selected for frequencies above 137 MHz.
Your scanner’s closed mode lets you hear only
those trunking talkgroups you specify. For more
information, see “Open and Closed Modes”.
Note
Note