Radio Shack PRO-2040 General Guide to Scanning, Guide to Frequencies, Guide to the Action Bands

20-414.fm Page 31 Wednesday, August 4, 1999 11:12 AM

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 emergency information when other communication methods break down. The following chart shows the frequencies that Hams use:

Wavelength	Frequency
(meters)	(MHz)
10-meter	28.000–29.700
6-meter	50.000–54.000
2-meter	144.000–148.000

Wavelength	Frequency
(meters)	(MHz)
70-cm	420.000–450.000

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.

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