The ARRL Ham Radio License Manual by ARRL Inc

Author:ARRL Inc.
Language: eng
Format: mobi, pdf
ISBN: 9781625950130
Publisher: ARRL, the national association for Amateur Radio
Published: 2014-10-26T16:00:00+00:00

Today, there are literally hundreds of bands and dozens of different types of radio spectrum users. The frequency privileges granted to the various services are called allocations. For example, amateurs are allocated 144-148 MHz, the 2 meter band. Figure 7.4 is a grand overview of the radio spectrum and where amateurs have frequency privileges. You can see that amateur allocations are sprinkled throughout the radio spectrum, not concentrated in or excluded from any one region. As you recall from our discussion on propagation, radio signals of different frequencies propagate differently. Thus, it’s fortunate that spectrum planning has resulted in amateurs having access to a wide range of frequencies in which to experiment and to apply to different communications needs.

Table 7.2 shows the Technician VHF/UHF frequency privileges that you are expected to know for your license exam. Remember that a band can be referred to by frequency (“50 MHz”) or by wavelength (“6 meters”). Use the formula f (in MHz) = 300 / wavelength (in meters) or wavelength (in meters) = 300 / f (in MHz) to convert between frequency and wavelength. [T1B03 to T1B07]

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