PRO-41  (200-0301)              Operation               Faxback Doc. # 7309

SETTING THE VOLUME AND SQUELCH CONTROLS

Rotate VOLUME clockwise and SQUELCH counterclockwise until you hear a
hissing sound.  Then, slowly rotate SQUELCH clockwise until the noise
stops.  Set VOLUME to a comfortable level.

If the scanner picks up unwanted weak transmissions, rotate SQUELCH
clockwise to decrease the scanner's sensitivity to signals.

USING THE KEY LOCK

Once you program the scanner, you can protect it from accidental program
changes by moving the lock SWITCH to IN. In this position, the only
controls that operate are VOLUME, SQUELCH, MANUAL, and SCAN.

When you want to change the scanner's programming, move the LOCK switch to
OUT.

PROGRAMMING THE SCANNER

Follow these steps to store frequencies in channels.

1.  Select a channel to program by pressing MANUAL, entering the channel
    number you want to program, and pressing MANUAL.

2.  Enter a frequency.

    To enter the decimal, press ./CLEAR.  The decimal point is displayed
    as a dash (-) on the display.

3.  Press ENTER to store the frequency.

    If you made a mistake in Step 2, E appears on the display.  Press
    ./CLEAR twice and repeat Step 2.

4.  To confirm the proper entry, press REVIEW.  The programmed frequency
    appears on the display, one digit at a time.

5.  To program more channels, repeat Steps 1 to 3.  If you want to program
    the next channel in sequence, simply press MANUAL and repeat
    Steps 2-4.

Tips for Programming

A good reference for active frequencies is Radio Shack's Police Call
Directory including Fire and Emergency Services.

We update this directory every year, so be sure to get a current copy.

Frequencies in the VHF bands are in 5 kHz steps.  In the UHF bands, they
are in 12.5 kHz steps.  The scanner automatically rounds the frequency to
the nearest valid number.  For example, if you try to enter a frequency of
151.373, your scanner accepts it as 151.475.

SCANNING THE CHANNELS

To begin scanning the channels, press SCAN.  The scanner scans through all
the channels except the ones you have locked out.  Be sure to read the
following sections to get the full benefit from the scanner's special
features.

LOCKING OUT CHANNELS

You can make the scanner scan more efficiently by locking out channels
that you have not programmed.  Enter the channel number you wish to lock
out, press MANUAL and then press LOCK OUT so that the LOCK OUT indicator
lights.  This is also handy for locking out channels that have a
continuous transmission.  You can still manually select locked out
channels for listening.

To unlock a channel you have locked, manually select the channel and press
LOCK OUT so that the LOCK OUT indicator goes off.

MANUALLY SELECTING A CHANNEL

You can continuously monitor a single channel without scanning.  This is
useful if you hear an emergency broadcast on a channel and do not want to
miss any of the details - even though there might be periods of
silence - or if you want to monitor a channel that you have locked out.

To select a channel to monitor, press MANUAL and advance through the
channels by pressing MANUAL repeatedly, or move directly to a channel by
entering the channel number on the keypad then pressing MANUAL.  If the
scanner is scanning and has stopped at the desired channel, press MANUAL
one time.

AUTOMATIC SCAN DELAY

The scanner stops when it finds a signal.  It begins scanning other
channels about 3 seconds after the signal ends.  The 3-second delay gives
you a chance to receive a reply to the first signal.

A GENERAL GUIDE TO SCANNING

BIRDIES

Birdies are the products of internally generated signals that make some
frequencies difficult or impossible to receive.  If you program one of
these frequencies, you hear only noise on that frequency.

If the interference is not severe, you might be able to cut out the birdie
by turning the squelch control clockwise.  The most common birdies to
watch for are listed below.

          30.300 MHz

          31.200 MHz

          32.500 MHz

          41.600 MHz

          52.000 MHz

RECEPTION NOTES

The scanner receives signals that are mainly "line of sight."  That means
that you usually cannot hear stations at your listening location that
extend beyond the horizon.

During the summer, you might hear stations in the 30-50 MHz range located
several hundred or even thousands of miles away.  This phenomenon is known
as skip, and is caused by summer atmospheric conditions.  This type of
reception is unpredictable but often very interesting.

One useful service is the National Oceanic Atmospheric Administration
(NOAA) Weather Radio's continuous weather broadcasts.  These broadcasts
advise you of the current weather conditions, weather predictions, and
also contain information about any threatening weather.  These stations
use three frequencies - 162.40, 162.475, and 162.55 MHz.  In most areas of
the country, you can receive one or more of these frequencies.

GUIDE TO THE ACTION BANDS

With the right frequencies programmed into the scanner, you can monitor
exciting events.  With a little investigation, you can find active
frequencies in your community.  We can give you some general pointers, and
you can take it from there.  Please use caution and common sense when
you hear an emergency call.  Never go to the scene of an emergency - it
could be the most dangerous thing you could ever do.

Find out if there is a local club that monitors these frequencies.
Perhaps a local electronics repair shop that works on similar equipment
can give you the frequencies used by local radio services.  A volunteer
police or fire employee can also be a good source of this information.

As a general rule on VHF, most activity is between 153.73 and 159.46 MHz.
Here you find local government, police, fire, and most such emergency
services.  If you are near a railroad yard or major railroad tracks, look
between 160.0 and 161.9 MHz for signals.

In some larger cities, there has been a move to the UHF bands for these
emergency services.  Here, most of the activity is between 453.025 and
453.95 MHz and again between 456.025 and 459.95 MHz.

In the UHF band, the range between 456.025 and 459.95 MHz and again
between 465.025 and 469.975 MHz is used by mobile units and control
stations associated with base and repeater units that operate 5 MHz lower
(that is, between 451.025 and 454.95 and between 460.025 and 464.975 MHz).
This means that if you find an active channel inside one of these
spreads, you can look 5 MHz lower (or higher, as the case may be) to find
the major base station/repeater for that radio service.

(br-7/15/94)