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LA Confidential – X-Band & Artichokes

October 28, 2011 by Leave a Comment
The Westin Bonaventure Hotel, Los Angeles

The Westin Bonaventure Hotel

I’m the sort of person who likes to plan, but despite my best intentions life always seems to be event-driven. Such is the case today, which is why I’m writing this. Let me explain:

I’m on LinkedIn and am a member of some 30+ Groups relating to satellite communications. Being a helpful sort of guy I try to answer questions posed by Group members if they relate to a topic that I know something about. Such was the case today when I saw that someone had posed the question along the lines “What is the difference between the use of a Klystron and a TWTA in an earth station transmitter”?
Well, that’s right up my street. I remembered writing a paper related to this way back in 1981. Even though that was 30 years ago and technology evolves, the underlying physics remains the same.

The paper was entitled “Design of a High Power Earth Station Transmitter for the Band 7.9 to 8.4 GHz”. As you’ll all know that is one of the main uplink bands (X-Band) used for military satellite communications and the paper arose out of some work I did on a contract for a particular Government [Read more…]

Filed Under: Cities, Launch Sites, Launch Vehicles, Military Earth Stations

Help Save Goonhilly Earth Station Complex

October 7, 2011 by Leave a Comment

Photo courtesy of and copyright Ian Jones, 2011

Goonhilly 3 Antenna and the Orion Constellation

Everybody’s heard of Goonhilly, haven’t they? No? I’m amazed, so here’s the story of a piece of UK National and technological heritage and why it desperately needs your support right now.

There’s an urgent petition to the UK Government which needs to be considered and, if agreed with, then signed by all people who do not want to see yet another piece of national heritage callously discarded by short-term-interest politicians and NMP (not my problem) bureaucrats.
If I sound cynical, just look at what the last Government did with the Foreign Office Library. They scrapped it! Apparently, you can now find original, ancient treaties etc of the British Empire for sale on EBay!!!

The petition site is at http://www.petitionbuzz.com/petitions/goonhilly

Goonhilly Downs – a windswept, out-of-the-way location on the Lizard peninsular by the Atlantic Ocean in south west Cornwall, England became a dramatic focal point at the dawn of the satellite communications era. Why, you might ask? [Read more…]

Filed Under: Countries, Earth Station Locations, Earth Stations, Organisations, Telecommunications