CTR-94  (140-0726)              Power Sources          Faxback Doc. # 9928

You can operate the CTR-94 using:

    Internal battery power (using four C batteries)

    AC power (using an optional AC adapter)

    Vehicle battery power (using an optional DC adapter)

INTERNAL BATTERY POWER

You can power the CTR-94 from four C batteries.  For the best results, we
recommend alkaline batteries such as Radio Shack Cat. No. 23-551
(not supplied).  If the CTR-94 does not operate properly or if the sound
weakens or distorts, replace the batteries.

1.  Press Down on the tabs above the battery compartment cover and pull
    the cover down to remove it.

2.  Remove the old batteries, if necessary.

    Cautions:  Always dispose of the old batteries promptly and properly.

               Never leave dead, old, or weak batteries in the CTR-94.
               They can leak chemicals and corrode or damage electronic
               circuits.

               If you do not plan to use the CTR-94 for a month or more,
               or if you plan to use external AC or DC power, remove the
               batteries to protect the CTR-94 from possible battery
               leakage.

3.  Place four C batteries in the compartment as indicated by the polarity
    symbols (+ and -) marked in the compartment.

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

               Never mix fresh with old batteries.

4.  Replace the battery compartment cover.

AC POWER

You can power the CTR-94 from standard AC power, using an optional AC
adapter such as Radio Shack Cat. No. 273-1662 (not supplied).

Cautions:  You must use an AC adapter that supplies 6 volts and delivers
           at least 300 milliamps.  Its center tip must be set to
           negative, and its plug must correctly fit the system's DC 6V
           jack.  The recommended adapter meets these specification.
           Using an AC adapter that does not meet these specifications
           could seriously damage the CTR-94 or the adapter.

           Always plug the adapter into the CTR-94 before you plug it into
           the AC outlet, and always unplug the adapter from the AC outlet
           before you unplug it from the CTR-94.

1.  Insert the AC adapter's barrel plug into the DC 6V jack on the back
    of the CTR-94.

2.  Plug the adapter into a standard AC outlet.

    Note:  The internal batteries automatically disconnect when you
           connect the AC adapter to the CTR-94's DC 6V jack.

VEHICLE BATTERY POWER

You can power the CTR-94 from your vehicle's battery power using an
optional DC adapter, such as Radio Shack Cat. No. 273-1802 (not supplied).

Cautions:  The vehicle must have a 12-volt DC, negative-ground electrical
           system.

           The recommended DC adapter supplies 6 volts and delivers at
           least 300 milliamps.  Its center tip is set to negative, and
           its plug correctly fits the CTR-94's DC 6V jack.  Using a DC
           adapter that does not meet these specifications could seriously
           damage the CTR-94 or the adapter.

           Always plug the adapter into the CTR-94 before you plug it into
           the cigarette-lighter socket, and always unplug the adapter
           from the cigarette-lighter socket before you unplug it from the
           CTR-94.

1.  Set the DC adapter's voltage to 6V.

2.  Insert the DC adapter's barrel plug into the CTR-94's DC 6V jack.

3.  Insert the other end of the adapter into your vehicle's cigarette-
    lighter socket.

(br/all-03/01/95)