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
Listening to a Monitor Memory
To recall a frequency stored in a monitor memory, press MAN
then MON/CL. M, the monitor memory number, and CH flash and
the stored frequency appears. 
Note:
 See Step 4 under “Searching the Service Banks” on
Page 28 for more information about storing a frequency in a
monitor memory.
To select other monitor memories, enter the desired monitor
memory’s number (1—20), then press 
MON/CL again.
Moving a Frequency from a Monitor Memory to a 
Channel
1. Press MAN, enter the channel number where you want to
store the frequency, then press 
PGM. PGM and the selected
channel number appear.
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							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 channels
with stored frequencies, simply press 
SCAN. SCAN and s
 ap-
pear, and the scanner begins to rapidly scan until it finds an ac-
tive frequency.
When the scanner finds an active frequency, it stops and dis-
plays that channel and frequency number, then it automatically
begins scanning again when the transmission on that frequency
ends.
Notes:
• To reverse the scanning direction, press s
 or t
.
• To set the scanner to remain on the current channel for 2
seconds after the transmission ends, see “Delay” on
Page 36.
• To set the scanner to remain on the current channel, even
after the transmission stops, press 
MAN at any time during
the transmission so 
MAN appears and SCAN disappears
(see “Monitoring a Stored Channel” on Page 33).
• To lock out channels so the scanner does not stop for a
transmission on those channels, see “Locking Out Channels
or Frequencies” on Page 36.
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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 key. A bar appears under the bank’s
number.
Notes:
• You cannot turn off all banks. There must be at least one
active bank.
• You can manually select any channel in a bank, even if the
bank is turned off.
• When you turn on the bank during scanning, the scanner
moves to the selected bank’s channel and continues scan-
ning.
MONITORING A STORED CHANNEL
You can continuously monitor a specific channel without scan-
ning. This is useful if you hear an emergency broadcast on a
channel and do not want to miss any details — even though
there might be periods of silence — or if you simply want to
monitor that channel.
Follow these steps to manually select a channel.
1. Press 
MAN.
2. Enter the channel number (1–200).
3. Press 
MAN again.
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							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 keys to enter that
channel number (1–200), then press 
PGM again. Or repeat-
edly press 
PGM until the desired channel number appears.
Then repeat Step 4.
LISTENING TO THE MARINE BANK
To listen to the marine bank, repeatedly press BAND until MRN
appears.
To change the channel manually, press s
 or t
.
To scan through the marine bank, hold down s
 or t
 for about 2
seconds. 
MAN disappears and SCAN appears. To change the
scanning direction, press s
 or t
.
To stop scanning the channels, hold down s
 or t 
for 
about 2
seconds.
You can select a marine channel directly. When the scanner
stops scanning the marine bank, use the number keys to enter
the two-digit channel number.
LISTENING TO THE WEATHER BAND
To hear your local forecast and regional weather information,
press 
WX. Your scanner begins to scan through the weather
band.
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							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 detects the
weather alert, it sounds an alarm. Press any key to turn off the
alarm. To cancel the weather alert operation, press 
PRI/ALERT
again.
ChannelFrequency 
(MHz)
1162.400
2162.425
3162.450
4162.475
5162.500
6162.525
7162.550
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							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 delay in any of these ways:
• If the scanner is scanning and stops on an active channel,
quickly press 
DELAY
/• before it resumes scanning.
• If the desired channel is not selected, manually select the
channel, then press 
DELAY
/•.
• If the scanner is searching, press 
DELAY
/•. DLY appears
and the scanner automatically adds a 2-second delay to
every transmission it stops on in that band.
To turn off the 2-second delay in a channel or for all frequencies,
press 
DELAY
/• while the scanner is monitoring that channel or
frequency. DLY disappears.
LOCKING OUT CHANNELS OR 
FREQUENCIES 
You can increase the effective scanning or search speed by
locking out individual channels or frequencies that have a con-
tinuous transmission, such as a weather channel (see “National
Weather Frequencies” on Page 41) or a birdie frequency (see
“Birdie Frequencies” on Page 41).
Locking Out Channels
To lock out a channel during scanning, press L/O / L/O RVW
when the scanner stops on the channel.
To manually lock out a channel, select the channel then hold
down 
L/O / L/O RVW until L/O appears.
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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 service
bank searches.
Note: 
You can lock out as many as 50 frequencies during a
search. If you try to lock out more, 
FLo -FULL appears (see
“Reviewing Locked-Out Frequencies” and “Removing Lockouts
From All Frequencies”).
Reviewing Locked-Out Frequencies
To review the frequencies you locked out, hold down L/O / L/O
RVW
 for about 2 seconds during a search, then repeatedly press
s
 or t
. 
L-r appears and the scanner displays all locked out
frequencies as you press s
 or t
. When you reach the highest
locked-out frequency, the scanner beeps twice and returns to
the lowest locked-out frequency.
Removing Lockouts From All Frequencies
1. Hold down L/O/L/O RVW for about 2 seconds during a ser-
vice bank or direct search. 
L-r appears.
2. While holding down 
MON/CL, hold down L/O / L/O RVW. Flo
ALL-CL
 appears.
3. Press 
ENT. L-r 000.000 appears. The scanner clears
any lockouts from all frequencies. Or, if you do not want to
clear the lockouts, press 
MON/CL.
4. To continue searching, press 
BAND.
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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 RVW for about 2 seconds during a ser-
vice bank or direct search. 
L-r appears.
2. While holding down 
MON/CL, press BAND. dEFAULt
appears.
3. Press 
ENT. The scanner clears any lockouts from all fre-
quencies in all service banks. Or, if you do not want to clear
the lockouts, press 
MON/CL.
USING PRIORITY
The priority feature lets you scan through channels and still not
miss important or interesting calls on a frequency you select.
You can program one frequency into the priority channel. As the
scanner scans, if the priority feature is turned on, the scanner
checks the priority channel for activity every 2 seconds.
1. Press 
PGM, then press PRI/ALERT.
2. Enter the frequency you want to enter into the priority chan-
nel, then press 
ENT.
To turn on the priority feature, press 
PRI/ALERT during scanning.
PRI appears. The scanner checks the priority channel every 2
seconds and stays on the channel if there is activity. 
PCH and
the frequency appear whenever the scanner is set to the priority
channel.
To turn off the priority feature, press 
PRI/ALERT. PRI disap-
pears.
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							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 sound a tone each time you press one
of its keys (except 
LIGHT). You can turn the key tone off or back
on.
1. If the scanner is on, turn 
VOLUME counterclockwise until it
clicks to turn the scanner off.
2. While you hold down 
2 and ENT, turn on the scanner.
3. When 
oFF tonE or on tonE appear, release 2 and ENT.
USING THE KEY LOCK
Once you program your scanner, you can protect it from acci-
dental program changes by turning on the keylock feature.
When the keypad is locked, the only controls that operate are
SCAN, MANUAL, LIGHT, VOLUME, and SQUELCH.
Note
: The keylock does not prevent the scanner from scanning
channels or monitoring a single channel, whichever feature you
last selected.
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							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, do a little math.
Note the new frequency   474.675
Double the intermediate frequency of 10.7 MHz   (21.400)
and subtract it from the new frequency   –21.400
If the answer is the regular frequency   453.275
then you have tuned to an image.
Occasionally, you might get interference on a weak or distant
channel from a strong transmission 21.4 MHz above or below
the tuned frequency. This is rare, and the image signal is usually
cleared whenever there is a transmission on the actual frequen-
cy.
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