1, SNR Frequency selector switch.
You can find the same at the Volhov "Z" panel.

Usually guarded so one frequency was used in peacetime, and another in wartime.
(In case the enemy listens before the hostilities begun.)

Last edited by Hpasp; 02/10/11 09:50 AM.

Hpasp
Free SAM Simulator, "Realistic to the Switch"

(U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.)
http://sites.google.com/site/samsimulator1972/home

Book from the author - Soviet Nuclear Weapons in Hungary 1961-1991
https://sites.google.com/view/nuclear-weapons-in-hungary/

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