List of World War II British naval radar
Suffixing letters indicated the following; The first successful air-to-surface-vessel (ASV) radar, from early 1940.
ASV II radar allowed Fleet Air Arm (FAA) Swordfish from the carriers Victorious and Ark Royal to locate and attack the German battleship Bismarck in May 1941.
High-resolution centimetric radar could detect even small objects, such as the periscope or snorkel of a submerged submarine, making it a highly efficient tool for Anti-submarine warfare (ASW).
Fitted to Close Range Blind Fire (CRBF) director and STAAG weapon mount.
Dish antenna spun off-centre at high speed to produce scanning cone, target lock and blind fire possible.
Type 271 had separate transmit and receive aerials, small "cheese" antennas stacked on top of each other.
The antenna array was carried in a distinctive protective perspex "lantern", and initially had to be fitted directly onto the radar office roof due to limitations in coaxial cabling (until suitable waveguides had been developed).
The Type 271 was a vitally important war weapon, as for the first time it allowed escort ships to reliably detect surfaced U-boats or even just their periscopes.
A version of the Type 271 with a cable-drive and more powerful receiver allowing the antenna to be mounted remotely from the radar office.
The larger antennas more than made up for the wiring losses seen in the 272, and the resulting system was even more powerful than the original 271.
Destroyer main armament and capital ship secondary fire control set.
Used a single transmit/receive antenna, waveguides instead of coaxial cables and a much more powerful magnetron that considerably improved all-around performance.
Based upon Army GL Mark I set, fitted to C-class cruisers converted to anti-aircraft ships.
Aerial target ranges were passed directly to the HACS table (fire control computer).
[9] Decimetric (50 cm) ranging set for Bofors 40 mm and "multiple pom-pom" fire control.
[8] Main armament ranging and shot-spotting set for cruisers and battleships with lobe switching beginning with Type 284M[8] to increase accuracy of bearing readings.
[10] Type 284P was instrumental in the Battle of the North Cape allowing Duke of York to attack Scharnhorst blind.
Type 286M had fixed antennas, with a central Tx and an Rx on either side to give some indication of contact bearing.
[8] It also used a power follow up to continuously transmit the correct range rate as long as the target maintained a steady course and speed.
