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Что (кто) такое 60-meter band - определение
60-meter band
![Typical [[ionogram]] indicating foF2 of approximately 5.4 MHz.](https://commons.wikimedia.org/wiki/Special:FilePath/Ionogramme.png?width=200 "Typical [[ionogram]] indicating foF2 of approximately 5.4 MHz.")
AMATEUR RADIO FREQUENCY BAND
60 meter band; 60m band; 60-metre band; 5 MHz band
The 60-meter band or 5 MHz band is a relatively new amateur radio allocation, first introduced in 2002, that was originally only available in a few countries, such as the United States, United Kingdom, Norway, Finland, Denmark, Ireland and Iceland. Over a number of years however, an increasing proportion of countries' telecommunications administrations together with their government and military users have permitted Amateur Radio operation in the 5 MHz area on a short or longer-term basis, ranging from discrete channels to a frequency band allocation.
630-meter band
AMATEUR RADIO FREQUENCY BAND
600-meter band; 630-meter amateur radio band; 600-meter amateur band; 600-meter band (amateur radio); 630m band; 600-meter amateur radio band
The 630-meter (or 600-meter) amateur radio band is a frequency band allocated by the International Telecommunication Union (ITU) to amateur radio operators, and it ranges from 472–479 kHz, or equivalently 625.9–635.
20-meter band
AMATEUR RADIO FREQUENCY BAND
20 meters; 20 meter band; 20m; 20m band; 20 meter
The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.
