GEE Ground Transmitter Type T1365

GEE was a navigation aid which a navigator could use to establish their position in relation to series of radio ground transmitters.

The GEE radio navigation aid enabled navigators to locate their aircraft’s position by comparing the time differences between pulses transmitted from a ‘master’ station and those repeated by two substations. Its widespread introduction to Bomber Command from March 1942 improved navigation so that large numbers of aircraft could attack the same target in a short period of time. GEE was soon jammed by the Germans over occupied territory but was still useful in setting aircraft on the right track and helped them get home safely.