Europe, and another in neutral Spain, and after its existence had been discovered by the British, under the direction of R. V. Jones it was allowed to continue in use, un-jammed, because it was felt that it was actually more useful to RAF Coastal Command than it was to the Germans. In British use the German system was named 'Consol', and it remained un-jammed for the period of the war. Sonne/Consol after World War II The long range version developed by the Germans during the war was used by many countries for civilian purposes after the war, mostly under its English name Consol. Transmitters were installed in the US, the UK and the USSR. Technical considerations The reason the Lorenz beam principle was necessary, with its overlapping beams, was because the sharpness of a beam increases approximately logarithmically with the length of the aerial array with which it is generated. A law of diminishing returns operates, such that to attain the sharpness achieved by the Lorenz system with a single beam (approximately 1 mile wide over a range of two hundred miles), an array of prohibitive size would be required. See also Battle of the Beams Radio navigation Instrument landing system SCR-277 References External links https://web.archive.org/web/20110621075111/http://www.sonne-consol.es/ World War II German electronics Radio navigation Avionics