General Research of Electronics Inc 0716 用户手册

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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 scanners 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 an operational error. Carefully reread the 
relevant section in the Owners Manual.
0716 User Manual
Page 93