External Power; Turning On The Scanner; Setting The Volume; Setting The Squelch - Radio Shack RPO-137 User Manual

External Power

You can power your scanner using a 6V, 800mA
AC/DC adapter (not supplied).
To use an external power source:
1. Always connect the adapter (not supplied) to
the scanner first.
2. Plug the adapter into the power source.
3. To disconnect, unplug the adapter from the
power source first.
Warning: Do not connect a charging adapter to
the scanner if non-rechargeable batteries (such as
alkaline batteries) are installed in the scanner and
the switch is set to Ni-MH, or if you are unsure of
the switch's position. Non-rechargeable batteries will
get hot and can explode if you try to recharge them.
Caution: You must use a Class 2 power source
that supplies 6V DC and delivers at least 800mA.
Its center tip must be set to positive and its plug
must fit the scanner's DC 6V 800mA jack. Using
an adapter that does not meet these specifications
could damage the scanner or the adapter.

Turning on the Scanner

Make sure the scanner's antenna is connected,
then press and hold
scanner turns on.

Setting the Volume

1. Push the SEL/VOL/SQL knob.
2. Rotate the knob to select the volume level
from 0 to 15.

Setting the Squelch

1. Press Func, then push the SEL/VOL/SQL knob.
2. Rotate the knob to select the squelch level
from 0 to 15.
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