Radio Shack 20-514, Owner'S Manual, Page: 52 / 64

52
A GENERAL GUIDE TO SCANNING
Reception of the frequencies covered by your scanner is main-
ly “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 cre-
ated inside the scanner’s receiver. These operating frequen-
cies 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 scanner’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
frequency range from its lowest frequency to the highest. Oc-
casionally, the searching will stop as if it had found a signal, of-
ten 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
32.035 32.100 40.040 41.890
48.050 112.625 120.125 128.1375
136.1375 144.150 150.150 152.150
160.165 166.200 171.550 384.400
392.4125 400.4125 416.4375 424.4375
429.050 432.450 440.4625 448.4625
464.4875 473.0375 480.500 488.500
496.5125 504.525 808.8375 816.850
822.950 849.8625 856.8875 864.900
897.9625 904.9375 912.950 920.9625
930.0375 944.050 953.000