RadioShack Pro 2050 Trunk Track Home Scanner Owners Manual

11
Note: Connecting an external speaker
disconnects the scanner’s internal
speaker.
CONNECTING AN 
EARPHONE/
HEADPHONES
For private listening, you can connect
an earphone or headphones with a 1/8-
inch plug (such as Cat. No. 33-175 or
20-210) to the   jack on the front of
the scanner. This automatically dis-
connects the internal speaker.
Listening Safely
To protect your hearing, follow these
guidelines when you use an earphone
or headphones.
• Do not listen at extremely high
volume levels. Extended...

12
UNDERSTANDING YOUR SCANNER
Once you understand a few simple terms we use in this manual and familiarize
yourself with your scanner’s features, you can put the scanner to work for you. You
simply determine the type of communications you want to receive, then set the
scanner to scan them.
A 
frequenc
y is the tuning location of a station (expressed in kHz or MHz). To find
active frequencies, you can use the 
search function. 
You can also search the 
service-search banks, which are preset groups of...

13
SCANScans through the stored channels.
MANUALStops scanning and lets you directly enter a channel
number or frequency.
TRUNKSwitches between conventional and trunk tracking
modes.
SVC 
(service)Selects a service bank.
PRIORITY/SPEEDSets and turns on and off the priority feature; turns the
HyperSearch mode on and off.
Number Keys Each key has a single-digit label and a range of num-
bers. The single digits are used to enter a channel,
frequency, or ID number. The range of numbers (31–
60, for example)...

14
HOLD/s Holds on the current ID in the trunk tracking mode;
sets the search direction and holds the frequency
search.
DATATurns the data signal skip feature on or off or checks
the current trunking bank in the trunk tracking mode.
A LOOK AT THE DISPLAY
The display has indicators that show the scanner’s current operating status. A good
look at the display will help you understand how your scanner operates.
LISTAppears with a number (1–5) to indicate the list num-
ber.
BANK  Appears with numbers (1–10)...

15
 Shows which control/voice channels are currently
(channel activity indicator)  active.
Appears when a priority channel is selected.
SCANAppears when you scan channels.
MANUALAppears when you set the scanner to its manual
mode.
PRIAppears when the priority feature is turned on.
HOLDAppears when the scanner is in the hold mode during
a search. 
DELAYAppears when you program a delay. 
DATAAppears when the data skip function is active.
L/O (lockout) Appears when you manually select a channel, frequen-...

16
UNDERSTANDING 
BANKS
Channel Storage Banks
To make it easier to identify and select
the channels you want to listen to,
channels are divided into 10 banks of
30 channels each. Use each channel-
storage bank to group frequencies,
such as those used by the police de-
partment, fire department, ambulance
services, or aircraft (see “Guide to the
Action Bands” on Page 39). For exam-
ple, the police department might use
four frequencies, one for each side of
town. You could program the police
frequencies...

17
OPERATION
TURNING ON THE 
SCANNER AND SETTING 
SQUELCH
1. Turn SQUELCH and VOLUME fully
counterclockwise.
2. Turn 
VOLUME back clockwise until
you hear a hissing sound.
3. Turn 
SQUELCH clockwise, then
leave it set to a point just after the
hissing sound stops.
Notes: 
• If the scanner will not scan, turn
SQUELCH further clockwise.
• If the scanner picks up unwanted,
partial, or very weak transmis-
sions, turn 
SQUELCH clockwise to
decrease the scanner ’s sensitivity
to these signals. If you want to...

18
3. Press E to store the frequency into
the channel.
Notes:
• If you made a mistake in Step
2, Error appears and the
scanner beeps when you press
E. Simply start again from Step
2.
• Your scanner automatically
rounds the entered frequency to
the nearest valid frequency. For
example, if you enter a fre-
quency of 151.473, your scan-
ner accepts it as 151.475.
• If you entered a frequency that
is already stored in another
channel, the scanner beeps
three times and displays the
lowest channel number...

19
To select another service bank, re-
peatedly press 
SVC until the scanner
displays the name of the bank you
want to use.
Notes: 
• To skip data signals (such as
modem signals), press 
DATA. See
“Skipping Data Signals” on
Page 23.
• Because frequencies are not
always assigned to the same ser-
vices everywhere, you might hear
transmissions from one service in
another service group.
Press 
SEARCH to start searching im-
mediately or to continue searching if
you want to skip a frequency.
During...

20quency into the channel. The
scanner stores the frequency.
• s or t to stop searching so you
can listen to the transmission.
HOLD appears.
To release hold and continue
searching, press 
SEARCH.
Notes:
• To step through the frequencies
while 
HOLD appears, press s or t.
• If you tune to a search skip fre-
quency, 
L/O appears. See “Lock-
ing Out Channels and Fre-
quencies” on Page 23.
• To skip data signals (such as
modem signals), press 
DATA. See
“Skipping Data Signals” on
Page 23.
SCANNING THE STORED...