Radio Shack PRO-90 - Manual (Page 51)

51
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
Canadian Weather Frequencies
Note: These frequencies are not pre-programmed in the
weather service bank but can be manually programmed
into a channel.
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are sig-
nals created inside the scanner’s receiver. These oper-
ating frequencies might interfere with broadcasts on the
same frequencies. If you program one of these frequen-
cies, you hear only noise on that frequency. If the inter-
ference is not severe, you might be able to turn
SQUELCH
clockwise to cut out the birdie. This scanner’s birdie fre-
quencies (in MHz) are:
162.400 162.475 162.525
162.425 162.500 162.550
162.450
161.650 161.775 163.275
41.6000 406.2000 438.4000 489.2500
118.8875 413.1750 445.8250 495.3625
138.7000 413.2250 445.8375 496.3750
138.7050 416.1125 455.7375 813.4000
158.5150 426.0125 465.6500 852.0375
158.5200 426.0250 475.5500 899.2375
168.4250 435.9250 485.4625 926.7000
20-520.fm Page 51 Wednesday, August 4, 1999 3:06 PM