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31
A GENERAL GUIDE TO SCANNING
Reception of the frequencies cov-
ered by your scanner is mainly “line-
of-sight.” That means you usually
cannot hear stations that are beyond
the horizon. During the summer
months, you might be able to hear
stations in the 30-50 MHz range lo-
cated several hundred or even thou-
sands of miles away. This is because
of summer atmospheric conditions.
This type of reception is unpredict-
able but often very interesting!
GUIDE TO
FREQUENCIES
National Weather Frequen-
cies
161.650 162.440
162.525
161.775 162.450
162.550
162.400 162.475
163.275
162.425 162.500
Ham Radio Frequencies
Ham operators often transmit emer
g
ency
information when other communication
methods break down. The followin
g
chart
shows the frequencies that Hams use:
GUIDE TO THE ACTION
BANDS
International Broadcast
Bands
Several shortwave bands are allocat-
ed for international broadcasting be-
cause of the nature of propagation of
high frequencies. The bands are
sometimes identified according to
the approximate wavelength of the
signals in meters.
Wavelength
(meters)
Frequency
(MHz)
10-meter 28.000–29.700
6-meter 50.000–54.000
2-meter 144.000–148.000
70-cm 420.000–450.000
Wavelength
(meters)
Frequency
(MHz)
20-414.fm Page 31 Wednesday, August 4, 1999 11:12 AM