PRO-75 200-Channel Portable Scanner
(200-0312B)                Preparation                Faxback Doc. # 59441

Power Sources

You can power your scanner from any of three sources:

  Internal batteries or a rechargeable scanner battery pack (not supplied,
  see "Using Batteries," below).

  Standard AC power (with an optional AC adapter - see "Using Standard AC
  Power," below).

  Vehicle battery power (with an optional DC adapter - see "Using Vehicle
  Battery Power," below).

Notes: Connecting an AC or DC adapter to the scanner disconnects internal 
       batteries when you use the supplied non-rechargeable battery
       holder, but it does not disconnect internal batteries when you use
       the supplied rechargeable battery holder or a rechargeable battery
       pack. 

       If you install the rechargeable battery holder or a rechargeable
       battery pack, you can operate the scanner and recharge the
       rechargeable batteries or the battery pack at the same time.  See
       "Using Batteries" and "Charging Rechargeable Batteries or a
       Rechargeable Battery Pack," below.

       If the scanner stops working properly after connecting it to power,
       try resetting it.  See "Resetting/Initializing the Scanner" in
       Faxback Doc. # 59445.

Using Batteries

You can power the PRO-75 with six AA batteries.  For the longest operation 
and best performance, we recommend alkaline batteries, available at your 
local RadioShack store. 

You can use either the supplied non-rechargeable black battery holder, or 
the supplied rechargeable yellow battery holder. If using the rechargeable 
battery holder, we recommend nickel-cadmium batteries, such as RadioShack 
Cat. No. 23-125. You can also power the scanner from a rechargeable 
scanner battery pack, such as Cat. No. 23-288.

WARNING: Never install non-rechargeable batteries in the rechargeable
         battery holder.  Non-rechargeable batteries can get hot or
         explode if you try to recharge them.

Note: You must charge rechargeable batteries or a rechargeable battery
      pack before using either the first time.  See "Charging Rechargeable
      Batteries or a Rechargeable Battery Pack," below.

Follow these steps to install batteries or a battery pack.

1.  Press down on the battery compartment cover on the bottom of the
    scanner and slide the cover in the direction of the arrow to remove
    it.

2.  Pull up and slide the battery holder or battery pack out of the
    battery compartment. 

3.  If you are installing individual batteries, insert six AA batteries in
    the battery holder as indicated by the polarity symbols (+ and -)
    marked on the holder.

    CAUTIONS: Use only fresh batteries of the required size and
              recommended type. 

              Always remove old or weak batteries.  Batteries can leak 
              chemicals that destroy electronic circuits.

              Do not mix old and new batteries, different types of
              batteries (alkaline or rechargeable), or rechargeable
              batteries of different capacities.

4.  Slide the battery holder or battery pack into the compartment.

    CAUTION: The battery holder or battery pack fits only one way. Do not
             force it.

5.  Replace the cover.

When battery power is low, B appears and the scanner beeps continuously.  
When battery power is exhausted, the scanner turns itself off.  Replace 
all six non-rechargeable batteries, or recharge the rechargeable batteries 
or the battery pack.  See "Charging Rechargeable Batteries or a 
Rechargeable Battery Pack" below.

CAUTION: Always dispose of old batteries promptly and properly.  Do not
         bury or burn them.

Using Standard AC Power

To power the scanner from AC power, you need an AC adapter (Cat. No.
273-1665).

WARNING: Do not use an AC adapter's polarized plug with an extension cord,
         receptacle, or other outlet unless the blades can be fully
         inserted to prevent blade exposure.

CAUTIONS: You must use an AC adapter that supplies 9 volts and delivers at
          least 200 milliamps. Its center tip must be set to negative, and
          its plug must correctly fit the scanner's PWR 9V jack.  The
          recommended adapter meets these specifications. Using an adapter
          that does not meet these specifications could damage the scanner
          or the adapter.

          When you finish using the AC adapter, disconnect it from the AC
          outlet first, then disconnect it from the scanner.

Plug the adapter's 1.3 mm inner diameter/3.4 mm outer diameter barrel plug
into the scanner's PWR/DC 9V jack.  Then plug the adapter's power module
into a standard AC outlet.

Using Vehicle Battery Power

To power the scanner from your vehicle's cigarette-lighter socket, you 
need a DC adapter, such as Cat. No. 273-1810.

CAUTIONS: You must use a DC adapter that supplies (regulated) 9 volts and 
          delivers at least 200 milliamps.  Its center tip must be set to 
          negative, and its plug must correctly fit the scanner's PWR/DC
          9V jack.  The recommended adapter meets these specifications.
          Using an adapter that does not meet these specifications could
          damage the scanner or the adapter.

          To protect your vehicle's electrical system, always plug the
          adapter into the scanner before you plug it into your vehicle's
          cigarette lighter socket.  Always unplug the adapter from the
          vehicle's cigarette-lighter socket before you unplug it from the
          scanner.

1.  Connect the DC adapter's 1.3 mm inner diameter/3.4 mm outer diameter
    barrel plug to the adapter's cable, with the tip set to negative.

2.  Set the adapter's voltage switch to 9V.

3.  Insert the barrel plug into the scanner's PWR/DC 9V jack.

4.  Plug the other end of the adapter into your vehicle's cigarette
    lighter socket.

    Note: If the scanner does not operate properly when you connect a DC
          adapter, unplug the adapter from the cigarette-lighter socket
          and clean the socket to remove ashes and other debris.

Charging Rechargeable Batteries or a Rechargeable Battery Pack

Your scanner has a built-in charging circuit that lets you charge 
rechargeable batteries (Cat. No. 23-125, not supplied) or a rechargeable 
scanner battery pack (Cat. No. 23-288, not supplied) while it is in the 
scanner.  To charge rechargeable batteries or a battery pack, simply
connect an appropriate AC or DC adapter to the PWR/DC 9V jack.

Note: If you want to take the battery pack out of the scanner to charge
      it, follow the instructions provided with the battery pack. 

It takes between 14-16 hours to recharge rechargeable batteries or a
battery pack that is fully discharged.  You can operate the scanner while
recharging the rechargeable batteries or the battery pack, but charging
takes longer.

Note: Rechargeable batteries and a rechargeable battery pack last longer
      and deliver more power if you occasionally let them fully discharge.
      To do this, simply use the scanner until B appears on the display.
      Then fully charge the rechargeable batteries or the battery pack.

IMPORTANT: At the end of a rechargeable battery's or a rechargeable
           battery pack's useful life, it must be recycled or disposed of
           properly.  Contact your local, county, or state hazardous waste
           management authorities for information on recycling or disposal
           programs in your area.  Some options that might be available
           are: municipal curbside collection, drop-off boxes at retailers
           such as your local RadioShack store, recycling collection
           centers, and mail-back programs.

Connecting the Antenna

Follow these steps to attach the supplied flexible antenna to the ANT jack 
on the top of your scanner.

1.  Align the slots around the antenna's connector with the tabs on the
    ANT jack.

2.  Press the antenna down over the jack and turn the antenna's base
    clockwise until it locks into place.

Connecting an Optional Antenna

The antenna connector on your scanner makes it easy to use the scanner 
with a variety of antennas, such as an external mobile antenna or outdoor 
base stations antenna.  Your local RadioShack store sells a variety of 
antennas. 

Always use 50-Ohm coaxial cable, such as RG-58 or RG 8, to connect an 
outdoor antenna.  For lengths over 50 feet, use RG-8 low-loss dielectric 
coaxial cable.  If your antenna's cable does not have a BNC connector, you 
will also need a BNC adapter (also available at your local RadioShack 
store).

Follow the installation instructions supplied with the antenna, route the 
antenna cable to the scanner, then connect it to the ANT jack.

WARNING: Use extreme caution when installing or removing an outdoor
         antenna.  If the antenna starts to fall, let it go!  It could
         contact overhead power lines.  If the antenna touches a power
         line, contact with the antenna, mast, cable or guy wires can
         cause electrocution and death!  Call the power company to remove
         the antenna.  Do not attempt to do so yourself.

Connecting an Earphone/Headphones

For private listening, you can plug an earphone or mono/stereo headphones 
(such as Cat. No. 33-177 or 20-210) into the (headphone symbol) jack on
top of your scanner.  This automatically disconnects 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 high-volume
  listening can lead to permanent hearing loss.

  Set the volume to the lowest setting before you begin listening.  After
  you begin listening, adjust the volume to a comfortable level.

  Once you set the volume, do not increase it.  Over time, your ears adapt
  to the volume level, so a volume level that does not cause discomfort
  might still damage your hearing.

Traffic Safety

Do not wear an earphone or headphones while you drive a vehicle or ride a 
bicycle.  This can create a traffic hazard and can be illegal in some 
areas.

Even though some earphones and headphones let you hear some outside sounds 
when you listen at normal levels, they still can present a traffic hazard.

Connecting an Extension Speaker

In a noisy area, an amplified speaker (such as Cat. No. 21-541) might 
provide more comfortable listening.  Plug the speaker cable's 1/8-inch 
(3.5-mm) mini plug into your scanner's (headphone symbol) jack.

Using the Belt Clip

You can use the belt clip attached to the back of the scanner for hands
free carrying when you are on the go.  Simply slide the belt clip over
your belt or waistband.

(BR EB 4/24/00)

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