Amateur Radio Related

Camb-Hams
Chelmsford Amateur Radio Society
CodgersA monthly breakfast get-together of radio amateurs in East Anglia
Colchester Radio Amateurs
Essex CW Club
EssexHamSupporting Amateur Radio in Essex
Fists CW
GQRP Club
Grimeton17.2kHz
The Harwich Amateur Radio Interest Group
Martlesham Radio Society
OH8XRadio Arcala located in the Far North at the Arctic Circle under the Aurora Belt,
Radio Society of Great Britain
RAYNETEast Suffolk RAYNET communications Support Volunteers
Suffolk RedSuffolk RED is open to all who have an interest in Radio & Electronics.
South Anglia Repeater Group
UK Microwave Group
UK Radio Astronomy Association
UK Six Metre Group

Astronomy Related

British Astronomical Association
Orwell Astronimical Society (Ipswich)