6-millimeter Band
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6-millimeter Band

The 6 millimeter or 47 GHz band is a portion of the EHF (microwave) radio spectrum internationally allocated to amateur radio and amateur satellite use between 47.0 GHz and 47.2 GHz.[1]

Due to the lack of commercial off the shelf radios, amateurs who operate on the 6 mm band must design and construct their own equipment.[2] Amateurs often use the band to experiment with the maximum communication distance they can achieve, and they also use it occasionally for radio contesting.[2] In some areas, amateurs maintain 47 GHz propagation beacons on mountain tops.[2] The band has been successfully used by amateurs in moon bounce contacts.[2][3]


The International Telecommunication Union allocates 47.0 GHz to 47.2 GHz to amateur radio and amateur satellites on a primary basis in all three ITU regions.[1]

It is the only EHF band amateurs do not share with other radio services, and it is the only band above 2 meters which is exclusively for the amateur services in its entirety.[1]

List of notable frequencies

  • 47.088.2 GHz Narrow band calling frequency[4][5]
  • 47.088 GHz Propagation beacons[2]

Distance records

The current world distance record on the 6 mm band was 344.8 kilometres (214.2 mi) set by US stations AD6FP and W6QIW on September 19, 2015.[6]

The longest distance achieved on 6 mm in the United Kingdom was 203 kilometres (126 mi) between stations GM7MRF / GM0HNW and GW0IVA on October 21, 2001.[3]

In Australia, the 6 mm distance record was 177.9 kilometres (110.5 mi) set by stations VK3HZ / VK3APW and VK3XPD on January 11, 2017.[7]

The 6 mm Earth-Moon-Earth record was 9,967 kilometres (6,193 mi) set by stations AD6FP and RW3BP on January 23, 2005.[3]

See also


  1. ^ a b c "FCC Online Table of Frequency Allocations" (PDF). 47 C.F.R. Federal Communications Commission. May 7, 2019. Retrieved 2019.
  2. ^ a b c d e "UK Amateur Radio in 47GHz" (PDF). Radio Society of Great Britain. August 23, 2016. Retrieved 2019.
  3. ^ a b c Day, Peter; Qaurmby, John (May 9, 2019). "Microwave Distance Records". UK Microwave Group. Retrieved 2019.
  4. ^ "VHF Managers Handbook" (PDF). 7. International Amateur Radio Union Region 1. January 2015. p. 52. Retrieved 2015.
  5. ^ "IARU Region 2 Band Plan" (PDF). International Amateur Radio Union Region 2. October 14, 2016. p. 15.
  6. ^ "Distance Records" (PDF). Amateur Radio Relay League. May 21, 2019. Retrieved 2019.
  7. ^ "Australian VHF - UHF Records" (PDF). Wireless Institute of Australia. August 1, 2019. Retrieved 2019.

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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