RadioShack Pro 72 Portable Scanner Reciever Owners Manual

							21
 — locks/unlocks the keypad to prevent accidental en-
tries.
LIGHT — turns on/off the display’s backlight.
Number Keys 
— use these keys to enter the numbers for
a channel or frequency.
MON/0
 — enters a zero or accesses the monitor memory.
DLY/• (delay/decimal point) — programs a 2-second delay
for the selected channel, or enters a decimal point (neces-
sary when programming frequencies).
L-OUT/E (lockout/enter) — locks out channels so they will
not be scanned, or enters frequencies into channels.
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A LOOK AT THE DISPLAY
The display has indicators that show the scanner’s current
operation.
MAN — appears when you manually select a channel.
SCAN — appears when you scan channels.
WX — appears when you scan or manually search the pre-
programmed weather channels.
MON — appears when you listen to the monitor memory.
BATT — appears when battery power is low.
L/O — appears when you manually select a channel you
locked out.
SRCH — appears during a band or direct frequency
search.
 or   — indicates the search or scan direction.
DELAY — appears when you program a 2-second delay
for a channel.
PGM — appears while you program frequencies into the
scanner’s channels.
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 — appears when you lock the keypad.
ch — appears after the digits (1–50) that show which
channel the scanner is tuned to.
–d — appears during a direct frequency search.
000.0000 — the digits on the right of the display show
which frequency the scanner is tuned to.
Error — appears when you make an entry error.
dUPL (duplicate) — appears when you try to store a fre-
quency that is already stored in another channel.
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UNDERSTANDING BANDS/MONITOR 
MEMORY
Search Bands
Your scanner can tune over 32,000 different frequencies.
Many of these frequencies are grouped within permanent
memory locations called search bands.  
Note:
 The actual search range of Band 9 is 806
–824 MHz,
849
–869 MHz, and 894–960 MHz. The scanner does not
tune any frequencies between 824
–849 MHz and 869–
894 MHz, to help prevent reception of transmissions you
should not listen to. For more information, see “Scanning
Legally” on Page 6.
BandDisplayed 
Search 
Range 
(MHz)Description
029–5010-Meter Amateur Radio, VHF Lo
1
50–546-Meter Amateur Radio
2
137–144Aircraft/Air Shows, Government
3
144–1482-Meter Amateur Radio
4
148–174VHF Hi
5
380–420Government
6
420–45070-Centimeter Amateur Radio
7
450–470UHF Lo
8
470–512UHF “T” Band
9
806–960UHF Hi
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You can search these bands to quickly find active frequen-
cies you might want to store into the scanner’s channels.
For example, if you wanted to search for transmissions be-
tween amateur radio operators, you could search only the
search bands where you are most likely to hear the trans-
missions (Bands 0, 1, 3, and 6). See “Band Search” on
Page 29.
Note: The frequencies in the scanner’s search bands are
preset. You cannot change them.
Monitor Memory
The scanner also has a monitor memory that you can use
to temporarily store a frequency while you decide whether
to save it into a channel. This is handy for quickly storing
an active frequency when you are searching through an
entire band using direct search. See “Direct Search” on
Page 31.
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OPERATION
TURNING ON THE SCANNER/ 
SETTING VOLUME AND SQUELCH
Note: 
Make sure the scanner’s antenna is connected be-
fore you turn it on.
1. Turn 
SQUELCH fully counterclockwise.
2. Turn 
VOLUME clockwise until it clicks and you hear a
hissing sound.
3. Turn 
SQUELCH clockwise until the hissing sound
stops.
Notes:
• If the scanner picks up unwanted, partial, or very
weak transmissions, turn 
SQUELCH clockwise to
decrease the scanner’s sensitivity to these signals. If
you want to listen to a weak or distant station, turn
SQUELCH counterclockwise.
•If 
SQUELCH is adjusted so you always hear a hissing
sound, the scanner does not scan properly.
OFFMAXMINMAX VOL UME
SQUELCH
OFFMAXMINMAX VOL UME
SQUELCH
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• If you have not stored frequencies into any channels
(see “Storing Active Frequencies” on Page 27), the
scanner does not scan.
STORING ACTIVE FREQUENCIES
You can manually store frequencies you already know into
the scanner’s channels. You can also store frequencies
you found using band search directly into channels. You
can also store a frequency into a monitor memory then
store it into a channel.
Good references for active frequencies are the RadioShack
Police Call Radio Guide Including Fire and Emergency
Services
, Aeronautical Frequency Directory, and Maritime
Frequency Directory
. We update these directories every
year, so be sure to get a current copy. 
If you do not have a reference to frequencies in your area,
follow the steps in “Band Search” on Page 29 or “Direct
Search” on Page 31 to search for transmissions. See also
“Guide to the Action Bands” on Page 41.
Manually Storing Frequencies
If you know a frequency you want to store, you can store
it manually.
1. Press 
PGM. PGM appears.
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2. Use the number keys to enter the channel number
where you want to store the frequency, then press
PGM again. Or, repeatedly press PGM until the
desired channel number appears.
3. Use the number keys and 
DLY/• to enter the fre-
quency (including the decimal point) you want to
store into that channel.
4. Press 
E to store the frequency. 
Notes:
• If you entered an invalid frequency in Step 3,
Error appears, the channel number flashes,
and the scanner beeps three times after you
press 
E. Simply repeat Steps 3 and 4.
• Your scanner automatically rounds the entered
frequency down to the nearest valid frequency.
For example, if you enter a frequency of
151.4730, your scanner accepts it as 151.4700.
• If you entered a frequency that is already stored
in another channel, 
dUPL (duplicate) and the
lowest-numbered channel containing the dupli-
cate frequency flash for about 3 seconds. To store
the frequency anyway, press 
E again. 
5. Repeat Steps 2–4 to store more frequencies into
channels.
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Band Search
If you do not know of a frequency to store, you can search
your scanner’s preprogrammed search bands (see
“Search Bands” on Page 24) for active frequencies, then
store any that you find into your scanner’s channels. 
Follow these steps to search for and store active frequen-
cies using band search.
1. Press 
BAND. The last selected band number (b fol-
lowed by the band number) and the frequency
search range appear for about 2 seconds.
2. To select a different band, within 2 seconds, enter
the band’s number (0–9) or repeatedly press 
BAND
until the desired band number appears.
After about 2 seconds, 
SRCH   appears, the next
available channel flashes, and the scanner begins
searching rapidly upward in that band (from lowest to
highest frequency) for an active frequency.
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Notes:
• To reverse the search direction at any time, hold
down   for about 1 second.
• To search the band upward or downward in small
increments (in steps of 5 or 12.5 kHz, depending
on the band), repeatedly press and release   or
. 
• To select a different band after the scanner begins
searching the current band, simply repeat Step 2.
The scanner stops when it finds an active frequency. 
3. To store the displayed frequency in the channel cur-
rently flashing on the display, press 
E. The scanner
stores the frequency, then the next available channel
flashes.
Notes:
• You cannot store a frequency in the monitor mem-
ory during band search.
• After you store a frequency into the last available
channel, 
--ch appears instead of a channel
number. If you try to store a channel while 
--ch
appears, Ch FULL appears briefly. In order to
store more frequencies, you must clear some
channels. See “Clearing a Channel” on Page 34.
4. To search for another active frequency in the
selected band, hold down   or   for about 1 sec-
ond.
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