Radio Shack PRO-651 - Page 96

96
Additional Information
97
Problem Cause Solution
The keypad
does not
work.
The keypad may
be locked.
Press FUNC KEY/
LIGHT key to unlock.
The scanner
may need to be
initialized.
Follow steps in
“Initializing the
Scanner to Factory
Defaults” below.
The scanner
does not
receive digital
transmission
on digital
frequencies
or trunking
systems.
The digital channel
or talkgroup is not
using APCO-25
digital modulation.
The scanner can only
receive APCO-25
C4FM/CQPSK IMBE
digital signals.
The digital channel
or talkgroup is
encrypted.
The scanner will not
receive encrypted
traffic.
The digital channel
or talkgroup is
being transmitted
from a distant
location.
Reposition the
scanner or use an
outdoor antenna to
improve reception.
Scanner
scans slowly
or stops
on noise or
silence.
SQUELCH control
is not set properly.
Set SQUELCH per
“Turning on the Scanner
and Setting Squelch”
on page 23.
Subaudible
squelch mode
not set for
conventional
objects.
Set the correct
subaudible squelch
mode. See “Appendix
B: Detailed Menu
Reference: Conv Menu”
on page 108.
Error message
appears
when trying
to upload
or download
from a
computer.
Your computer is
using Windows XP
and does not have
the necessary USB
cable driver.
Download and install
the file: “Windows
XP Driver to resolve
PC connection error”
from your scanner’s
Product Support page
or the Software Down-
load page on
www.RadioShack.
com.
Then make your con-
nection and try again.
Be sure the correct
COM port is selected
in device manager.