GRE PSR-500, Руководство пользователя

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other nearby radio or TV sets are turned on near the scanner.
Use the TUNE function and scan every frequency range from its
lowest frequency to the highest. Occasionally, the searching will
stop as if it had found a signal, often without any sound. This is a
birdie. Make a list of all the birdies in your scanner for future
reference.
Care
Keep the scanner dry; if it gets wet, wipe it dry immediately. Use
and store the scanner only in normal temperature environments.
Handle the scanner carefully; do not drop it. Keep the scanner
away from dust and dirt, and wipe it with a damp cloth
occasionally to keep it looking new.
Modifying or tampering with the scanner ʼ s internal components
can cause a malfunction and might invalidate its warranty and
void your FCC authorization to operate it.
In Case of Fault
If you believe your scanner is defective, you should contact your
dealer for assistance. However, before you do so, check that the
fault was caused by a human error. Carefully reread the relevant
section in the Owners Manual.
PSR-500 User Manual Page 95