Ofcom has today published provisions for opening the 71-76GHz and 81-86GHz bands for licensed use which will increase the opportunities for broadband fixed wireless services.
Further details can be found at:
http://www.ofcom.org.uk/consult/condocs/71-86ghz/statement/
"Ofcom will permit the operation of the Amateur and Amateur Satellite allocations on a primary basis within the upper guard band of the 71-76 GHz block i.e. 75.875-76 GHz band. Amateur and Amateur Satellite use between 75.5 - 75.875 GHz will be permitted on a secondary basis."
At 10:58 11/8/06 -0000, you wrote:
Ofcom has today published provisions for opening the 71-76GHz and 81-86GHz bands for licensed use which will increase the opportunities for broadband fixed wireless services.
Further details can be found at:
http://www.ofcom.org.uk/consult/condocs/71-86ghz/statement/
"Ofcom will permit the operation of the Amateur and Amateur Satellite allocations on a primary basis within the upper guard band of the 71-76 GHz block i.e. 75.875-76 GHz band. Amateur and Amateur Satellite use between 75.5 - 75.875 GHz will be permitted on a secondary basis."
++++++++++++++++++++++++++++++++++++++++++++++++++++++ 8 November 2006 David, A very interesting document particularly with the proposed PRIMARY Amateur allocation 75.875-76.000 GHz.
To put the overall (radiated) power limit in perpective, it is 1 watt maximum into a well illuminated , very SMOOTH, nominal 3ft dish; a beamwidth of about 0.3 degree.
Starting with an X-band source, a varactor doubler followed by a varactor tripler should do the job.
(Remember when we used varactor multipliers for the 70cm and 23cm bands?)
John G3BVU SK
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David Barber -
John