Egon (radar)
EGON control center. At the bottom of the modified Freya mast is the 125 MHz antenna of the Q device (interrogator “cow”); The receiving antenna of the Freya radar is missing in the middle, but a 156 MHz antenna for the "Gemse" identification receiver is mounted above. On the left a “Würzburg giant” radar device .
EGON is the acronym for Erstling Gemse Offensive Navigation Procedure , a night hunting procedure used by the Luftwaffe during World War II . For this purpose, Freya radar devices were modified in such a way that they only consisted of a transmitter with a Q device (interrogator "Kuh" to activate the on-board radio devices FuG 25a "Erstling" ) and the associated identification receiver "Chamois" for friend-foe detection . Although only the own machines marked with “Erstling” could be recorded, the process could not be disturbed by “Düppel” , as different frequencies were used. The Q device transmitted on 125 MHz and the FuG 25a "answered" on 156 MHz.
literature
- Christian Möller: The operations of night battle groups 1, 2 and 20 on the Western Front from September 1944 to May 1945. ISBN 978-3-938208-67-0 .
- Fritz Trenkle : The German radio control procedures until 1945. Dr. Alfred Hüthig Verlag, Heidelberg 1987, ISBN 3-7785-1647-7 .
- Werner Gierlach: flight reporting service. Issue 8, Freya-Fibel, pp. 43–44, Cologne.
- TME 11-219 Directory of German Radar Equipment