Tinsel (codename)

R1155 Receiver on top of T1154 Transmitter, used for Tinsel.

The codename Tinsel referred to a type of equipment carried by RAF bombers and used for jamming Luftwaffe night-fighter controllers' speech radio-frequencies during the Second World War.

The equipment consisted of an audio microphone mounted inside one of the bomber's engine nacelles, the output of which fed into the aircraft's standard R1155 radio transmitter/receiver. The wireless operator could listen in to the frequencies used by the defending forces and then, when he heard a German transmission, tune his transmitter into the Luftwaffe frequency and transmit the amplified engine-noise on the same frequency, thus jamming the enemy transmission.

Although not very effective as a jammer - the noise produced merely acted as background noise to the transmitted speech - Tinsel did have the effect of making the night-fighter crews' job of distinguishing the instructions received from the ground more difficult.

RAF strategic bombing during the Second World War

Overviews	Butt Report (1941) RAF strategic bombing 1942–1945 Area Bombing Directive (1942) Dehousing paper (1942) Casablanca directive (1943)

Leaders	Arthur "Bomber" Harris Frederick "Prof" Lindemann Sir Charles Portal Sir Archibald Sinclair Arthur W. Tedder

Campaigns	Oil targets Area bombing of cities (1942–1943) U-boat pens (1943–1944) Battle of the Ruhr (1943) Combined Bomber Offensive (1943–1944) Battle of Berlin (1943–1944) Hamburg Heilbronn Kassel Pforzheim Dresden

Operations	Bellicose (Friedrichshafen) Chastise ("Dambusters" raid) Hurricane (1944) Hydra (Peenemünde)

Aircraft	Blenheim Boston (Douglas DB-7) Halifax Hampden Lancaster Manchester Mosquito Stirling Ventura Wellington Whitley

Technology	"Window" H2S Gee "Oboe" G-H "Monica" Blockbuster bomb Earthquake bomb Tallboy Grand Slam Bouncing bomb

Tactics	Area bombardment Bomber stream Firebombing Diversion raids Electronic warfare Intruder operations Master Bomber Pathfinders Shuttle bombing

See also	Aerial defence of the United Kingdom United States Army Air Forces (USAAF) List of Battle of Europe air operations Defense of the Reich Death by Moonlight: Bomber Command

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Tinsel (codename)

See also