Here are a few extra documents about the material in my Dark Side of the Moon talk:

• The announcement of Cobra Mist's closure. At the time, the government didn't admit it was an OTH radar.
• A declassified paper about the failure of Cobra Mist. Compiled from the official US government release (odd pages only) and from material on cufon.org.
• A note about the Cobra Mist Scientific Assessment Committee, also from cufon.org. I worked with Brian Roberts in the Esprit 1085 project.
  
• The FLR-9 manual.
  
• Operation Odyssey Dawn: the 2011 Lybia no-fly zone.
  
• The book Spycatcher by MI5's technical officer Peter Wright, Viking Press, 1987. ISBN 978-0670820559.
• Notes on Rafter by Richard J. Aldrich. He missed an important point. The UHF TV detector vans relied on the normal leakage of the local oscillator signal through the receiver's input stages. Rafter induced a stronger short burst by overloading the input stages.
• Markus Kuhn has a good blog on Edward Snowden's DROPMIRE revelations. He suggests it is a TEMPEST (page 89) attack.
• The GCHQ "Doughnut".

If you are interested in government radio activities, you might also be interested in.:

• The Soviet OTH radar near Chernobyl. It seemed to work and gave a distinctive shortwave signal for many years.
• Many countries, including the UK, communicate with their spies using Numbers Stations. The Lincolnshire Poacher, located on a UK base in Cyprus, was one of ours.
• Shortwave radio was also used for propaganda. You can still see the large aerials at Woofferton, between Ludlow and Leominster, that used to carry the broadcast of the Voice of America.
• You can occasionally visit the very first operational RADAR station at Bawdsey, near Felixstowe.

And, of course, you can set up your own shortwave station.