Radio Shack PRO-528 - Manual (Page 13)

13
The Basics
POWER DC 9V —
connect an external
power source here
(not included).
PC/IF — connect an
optional PC interface
cable here to use the
scanner with your
computer.
VOLUME — turn
the scanner
on or off and
adjust the
volume.
— connect
an earphone or
headphone here.
SQUELCH — adjust the
squelch.