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Troubleshooting
Problem
Scanner won't
The AC adapter or DC
power on.
adapter/cable is not
connected.
The keypad does
The scanner may need
not work.
to be initialized.
Scanner will not
Possible "birdie"
scan when SCAN
frequency
is pressed
programmed
The scanner may
need to be reset or
initialized
No channels
programmed, or
only one channel
programmed, or all
channels locked out
SQUELCH control is
not adjusted properly
The scanner does
The digital channel
not receive digital
or talkgroup is not
transmission on
using APCO-25 digital
digital frequencies
modulation.
or trunking
The digital channel or
systems.
talkgroup is encrypted.
The digital channel
or talkgroup is being
transmitted from a
distant location.
Scanner scans
SQUELCH control is
slowly.
set too high.
Scanner stops on
Subaudible squelch
noise or silence.
mode not set.
Additional Information
Cause
Be sure the adapter's barrel plug is
fully plugged into the DC 13.8V jack.
Follow steps in "Initializing the
Scanner to Factory Defaults" below.
Tighten squelch, apply attenuator or
lock out the "birdie" frequency
Follow steps in "Initializing the
Scanner to Factory Defaults" below.
Ensure that the scanner has more
than one channel programmed and
enabled for scanning
Turn SQUELCH control clockwise
until scanning resumes
The scanner can only receive
APCO-25 C4FM/CQPSK IMBE digital
signals.
The scanner will not receive
encrypted traffic.
Reposition the scanner or use
an outdoor antenna to improve
reception.
Turn SQUELCH control counter
clockwise.
Set the correct subaudible squelch
mode. See "Appendix B: Detailed Menu
Reference: Conv Menu" on page 101.
89
Solution
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Do you have a question about the PRO-652 and is the answer not in the manual?
Questions and answers
how can git rid of heap error on radio shack 652//thanks
To fix the heap error on the RadioShack PRO-652, perform a reset and reprogram the scanner. Follow these steps:
1. Reset the Scanner:
- Turn off the scanner.
- Press and hold the PROG, FUNC, and GLOBAL keys.
- Turn the scanner back on while holding these keys.
- Release the keys when the reset prompt appears.
2. Reprogram the Scanner:
- If the issue persists after resetting, re-enter the frequencies and settings manually or using programming software.
3. Check for Corrupt Data:
- The heap error may be caused by a corrupt frequency or object.
- Clear all stored data and reprogram carefully.
4. Cycle Power:
- If the scanner becomes unresponsive, turn it off and back on to resume normal operation.
Following these steps should resolve the heap error.
This answer is automatically generated