3-centimeter band
Encyclopedia
The 3 centimeter or 10 GHz band is a portion of the SHF
SHF
SHF may refer to:* Super high frequency, radio frequencies in the range of 3 GHz and 30 GHz* Société de l'histoire de France, a society formed in 1833 to study French history* Souther-Hillman-Furay Band, a mid-1970s country-rock band....

 (microwave
Microwave
Microwaves, a subset of radio waves, have wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz and 300 GHz. This broad definition includes both UHF and EHF , and various sources use different boundaries...

) radio spectrum internationally allocated to amateur radio
Amateur radio
Amateur radio is the use of designated radio frequency spectrum for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication...

 and amateur satellite use on a secondary basis. The amateur radio band is between 10.00 GHz and 10.50 GHz, and the amateur satellite band is between 10.45 GHz and 10.50 GHz. The allocations are the same in all three ITU region
ITU region
The International Telecommunication Union , in its International Radio Regulations, divides the world into three ITU regions for the purposes of managing the global radio spectrum...

s.

Frequencies of note

  • 10.364 GHz Calling frequency
  • 10.368 GHz Narrow band calling frequency
  • 10.368.3 to 10.368.4 GHz Propagation beacons

Wideband FM Channels

Common Wideband FM frequencies used with gunnplexers. Operation is in full-duplex
Duplex (telecommunications)
A duplex communication system is a system composed of two connected parties or devices that can communicate with one another in both directions. The term multiplexing is used when describing communication between more than two parties or devices....

 with a 30 or 90 MHz split:
  • 10.220 GHz
  • 10.250 GHz †
  • 10.280 GHz †
  • 10.310 GHz
  • 10.340 GHz
  • 10.370 GHz ‡
  • 10.400 GHz
  • 10.430 GHz


† Most commonly used pair for gunnplexers in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

.

‡ Should only be used if interference is not caused to narrow-band stations.
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