Radio Shack PRO-90 ユーザーズマニュアル
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.
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.
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
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:
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