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E. 52 a-1
("Köln") - HF communications receiver
(Ln 21000-4). Covered 1.5…25.0 MHz, A1 / A3. Using all similar tubes - RV 12 P2000
pentodes. Equipped with servomotors
providing mechanical memories to store four frequencies and to remotely control two other similar
receivers for direction finding purposes. Manufactured by Telefunken from 1943.
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