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Granta Contest Group - HF amplifier - The Granta Contest Group was founded in 1997 by Mark G4AXX, Colin G4CWH, Simon G4EAG, Andy G4KNO. The Group gets it's name from the River Granta (or Cam), which passes through Cambridgeshire and Essex. Using is a 160-10m "desktop kilowatt" linear amplifier using an Eimac 4CX1000A tetrode

GB3CAM Cambridge microwave beacons - Two beacons in 3 and 1.2 cm band, 10368.755 MHz and 24048.870 MHz

RSGB Region-12 - RSGB Region-12 Website for Cambridgeshire, Bedfordshire, Norfolk, Essex, Kent and Suffolk.

Huntingdonshire ARS - Formed in 1987, serve the west part of Cambridgeshire that straddles the valley of the river Great Ouse and was the old county of Huntingdonshire. This includes the market towns of Huntingdon, St Neots, St Ives and Ramsey.

W8VP Cambridge Amateur Radio Association - Cambridge, Ohio

Boston-Area University Police Radio - Police and Security Broadcasts at Harvard University, Boston-Area University Police Radio. Cambridge; Boston.

The Very Small Array (VSA) - in Tenerife (Canary Islands). Designed to study fluctuations in the Cosmic Microwave Background (CMB) thought to originate from the period immediately following the big bang. Operated by Cambridge and Manchester Universities (UK).

hamradiodf : Cambs Ham Radio DF'ing - Cambridgeshire England Direction Finding group