RadioShack Pro 79 Vhf Uhf Handheld Scanner Reciever Owners Manual

31
• If you entered a frequency that is already stored in
another channel, 
-dUPL- (duplicate) and the lowest-
numbered channel containing the duplicate frequency
flash on the display for about 3 seconds. If you want to
store the frequency anyway, press 
ENT again.
4. To store the displayed frequency in a monitor memory,
press 
MON/CL. M, the monitor memory number, and the fre-
quency flash twice.
5. To search for another active frequency, hold down s
 or t
for about 1 second.
USING MONITOR MEMORY...

32
2. Press MON/CL. M, a monitor memory number, and CH flash,
and the frequency in the selected monitor memory appears.
3. Enter the desired monitor memory’s number (1–20), then
press 
MON/CL again. The selected monitor memory’s fre-
quency appears.
4. Press 
ENT. The scanner stores the frequency in the selected
channel.
5. To move another monitor memory frequency to the next
channel, press 
PGM and repeat Steps 2–4.
SCANNING THE STORED CHANNELS
To set the scanner to continuously scan through all...

33
TURNING CHANNEL-STORAGE BANKS 
OFF AND ON
Channel-storage banks (1–10) are on when they have a bar un-
derneath them and off when no bar appears underneath them.
To turn off a channel-storage bank, press 
SCAN to see which
banks are currently on, then press the bank’s number key. The
bar under the bank’s number disappears.
Note:
 The scanner does not scan any of the channels within the
banks you have turned off.
To turn on a channel-storage bank (1–10) press 
SCAN, and then
press the bank’s number...

34
CLEARING A STORED CHANNEL
If you no longer want a frequency stored in a channel (and you
do not want to replace that frequency with a different one), fol-
low these steps to clear the stored frequency.
1. Press 
MAN to stop scanning.
2. To select the desired channel number, use the number keys
to enter that channel number (1–200).
3. Press 
PGM. PGM appears.
4. Press 
0 then ENT. The frequency number changes to
000.0000 to indicate the channel is cleared.
5. To clear another channel, use the number...

35
Your scanner should stop within a few seconds on your local
weather broadcast. If the broadcast is weak, you can press 
WX
again to resume scanning.
WX Alert
Your scanner’s WX alert warns you of serious weather condi-
tions by sounding an alarm if a National Weather Service broad-
caster in your area broadcasts a weather alert tone.
To set the scanner so it sounds an alarm when a weather alert
tone is broadcast, press 
PRI/ALERT while you are listening to
the WX channel. 
ALErt appears. If the scanner...

36
SPECIAL FEATURES
DELAY
Many agencies use a two-way radio system that has a period of
several seconds between a query and a reply. To avoid missing
a reply, you can program a 2-second delay into any channel or
set a delay for all frequencies. When your scanner stops on a
channel or frequency with a programmed delay, 
DLY appears
and the scanner continues to monitor that channel or frequency
for 2 seconds after the transmission stops before resuming
scanning or searching.
You can program a 2-second...

37
To remove the lockout from a channel, manually select that
channel again, then hold down 
L/O/L/O RVW until L/O disap-
pears.
Notes:
• Your scanner automatically locks out empty channels.
• You can still manually select locked-out channels.
Locking Out Frequencies
To lock out a frequency during a service bank or direct search,
press 
L/O/L/O RVW when the scanner stops on that frequency.
The scanner locks out the frequency then continues searching.
You can lock out frequencies in both direct search and...

38
Removing Lockouts From All Frequencies in All 
Service Banks
Notes:
• These steps do not clear any lockouts in the marine service
bank.
• If you locked out frequencies which are within the range of
any of the service banks during direct search, the scanner
also removes those locked-out frequencies when you use
these steps. For example, if you lockout 29.000 MHz during
direct search, the scanner removes it since 29.000 MHz is
one of the frequencies in the ham radio service bank.
1. Hold down 
L/O / L/O...

39 Note: 
If you program a weather frequency into the priority chan-
nel and the scanner detects a WX alert tone on that frequency
(see “WX Alert” on Page 35), the scanner sounds the alert tone
and 
ALErt flashes. Press any key to turn off the alarm.
USING THE DISPLAY BACKLIGHT
You can turn on the display’s backlight for easy viewing in the
dark. Press 
LIGHT to turn on the light for 5 seconds. To turn off
the light sooner, press 
LIGHT again.
TURNING THE KEY TONE ON AND OFF
The scanner is preset to...

40
To turn on the keylock, hold down   for about 3 seconds un-
til the scanner beeps three times and   appears. To turn it
off, hold down   for about 3 seconds until the scanner beeps
three times and   disappears.
AVOIDING IMAGE FREQUENCIES
You might discover one of your regular stations on another fre-
quency that is not listed. It might be what is known as an image
frequency. For example, you might find a service that regularly
uses a frequency of 453.275 also on 474.675 MHz.
To see if it is an image,...