EKCO Airborne Weather Radar

*You may wish to pause the video here and there as some of the photos and schematics are a little text-heavy with details.

Notes:
1. Short S.25 Sunderland Mk1s were fitted with EKCO "ASV (Anti-Surface Vessel)" Mark II radar from October 1941. This was a primitive low-frequency radar system operating at a wavelength of 1.5 meters, featuring a row of four prominent "stickleback" aerials on top of the rear fuselage, two rows of four smaller aerials on either side of the fuselage beneath the stickleback antennas, and a single receiving aerial mounted under each wing outboard of the float and angled outward. ASV Mark III radar was introduced in early 1943, and the Sunderland Mark IIIs it was installed in were designated "Sunderland Mark IIIAs. The ASV Mark III operated in the centimetric band and used antennas mounted in blisters under the wings outboard of the floats, instead of the cluttered stickleback aerials.

2. Post-war, all priority was given to the development of domestic Radio and TV related products as government contracts were being terminated. Malmesbury eventually went over to domestic heating products, and equipment already manufactured for military use went straight into the redundant stock of the Ministry of Supply. At Southend, T1154 transmitters were modified for the world amateur market but the world was flooded with ex-military equipment, but most, such as R1155, T1154 and other radio stock, were dumped into old quarries and filled in.

3. As originally designed, the basic E190 system consisted of four modules: Scanner unit M2210, Transmitter/Receiver M2211, Indicator unit M2212, and Junction Box M2219.

4. Malmesbury was part of the PYE group but in the 1970's reverted back to EKCO Aviation products, and Helicopter Attack Radar was also produced there.

Sources:
Watts, Simon (August 2018). Airborne Maritime Surveillance Radar: Volume 1. Morgan & Claypool.
"Electronic Equipment, ASV (Air-To-Surface Vessel Radar) Mk II". Imperial War Museum.
Flight, 20 January, 1956.
Flight, 2 November 1954.
Cyril W. Lingwood.
Derek Cole.

Photos:
Cumulus by ELG21 – Pixabay user_id:3764790
Clouds by ELG21 – Pixabay user_id:3764790
Sunset by ELG21 – Pixabay user_id:3764790
Thunderstorm by Bidgee (Wiki)
Hail Damage by Dave Subelack https://www.flickr.com/photos/wee_in_... A380 from AsiaWire
ASV Mk II front transmitter antenna on a Consolidated PBY 20 May 1944, From Collections Canada MIKAN no. 3583273
Pre-production AI Mk III indicator in the Fighter Interception Unit (June 1940) courtesy of The RAF Museum.
de Havilland Comet IV Navigator’s Station by Vinsomnia
de Havillland Comet IV from https://www.airportspotting.com
https://commons.wikimedia.org/wiki/Fi...
1937 Imperial Airways Route Map from https://commons.wikimedia.org/Cowbridge House from http://www.lostheritage.org.uk/
Swiss Air Lines Convair 240 (HB-IRV) at Ringway on 25 March 1950 by RuthAS
Pre-production AI Mk III in FIU Blenheim courtesy of the RAF Museum
de Havilland Mosquito NF MkII Crown Copyright via IWM
Beaufighter Mark VIF Crown Copyright via IWM
Trident Cockpit by Ryan Hemmings
‘Hythe’ class Short Sunderland III (G-AGJM) from https://www.airhistory.net/photo/4408...
Scanning Cone https://slideplayer.com/
Concorde Cockpit by Christian Kath (Creative Commons 3.0)
Concorde 001 from https://www.popularmechanics.com
Concorde Nose from Flight Global    / @flightglobal  
Concorde Touchdown from http://fly.historicwings.com/2013/03/...
C. O. Stanley courtesy of National Science and Media Museum, Bradford. (CC 4.0)
EKCO Anson (G-ALIH) at Shoreham in 1959 (Author’s Collection)
EKCO Anson (G-AGPG) at Southend Airport (Author’s Collection)
de Havilland Comet 4 with EKCO E160 Radar Unit under test at Hatfield (Author’s Collection)
Other photos by the Author.

Illustrations:
Cloud Types https://www.redbackaviation.com/
EKCO Airborne Search Radar Catalogue (Author’s Collection)