Radio Shack PRO-79 - Manual (Page 41)

41
A GENERAL GUIDE TO SCANNING
Reception of the frequencies covered by your scanner is mainly
“line-of-sight.” That means you usually cannot hear stations that
are beyond the horizon.
GUIDE TO FREQUENCIES
National Weather Frequencies
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are signals creat-
ed inside the scanner’s receiver. These operating frequencies
might interfere with transmissions on the same frequencies. If
you program one of these frequencies, you hear only noise on
that frequency. If the interference is not severe, you might be
able to turn
SQUELCH clockwise to cut out the birdie. This scan-
ner’s birdie frequencies (in MHz) are:
To find the birdies in your individual scanner, begin by discon-
necting the antenna and moving it away from the scanner. Make
sure that no other nearby radio or TV sets are turned on near
the scanner. Use the search function and search every frequen-
cy range from its lowest frequency to the highest. Occasionally,
the searching will stop as if it had found a signal, often without
any sound. That is a birdie. Make a list of all the birdies in your
scanner for future reference.
162.400 162.425 162.450 162.475
162.500 162.525 162.550
30.075 30.735 38.400 40.000 40.980
48.025 51.200 51.225 112.675 128.575
136.725 140.800 144.655 152.995 160.965
166.400 169.010 386.375 399.375 402.475
416.0375 426.625 434.675 442.100 447.425
456.075 458.175 464.3625 466.225 474.3125
480.575 490.3375 504.625 506.4125
20-314.fm Page 41 Monday, December 13, 1999 12:55 PM