Does switch 1 have something to do with nuclear armed missiles? No, the Neva system had no nuclear tipped missiles. Its range was too low for this purpose.
Just remember the real nuclear switches at the Volhov and the Vega has no "atomic" symbol at all.
That "channel 1,2" selector is just the inbuilt voice comm selector switch.
At the Volhov, you find these at the middle of the "q" screen, as a long row of switches.
(there, all the cabins could be selected one-by-one)
I can't really venture a guess for switch 2. All I know is the first two positions are the RB light, and the third position is the H2 light.After the realization of the "ergonomic disaster state" of the Volhov system, (to be fair, for an expert user it gives more options, but for a lesser trained, it is way too complex to use it under stress) the development direction was aimed toward automation.
Even the developers planned that the Neva would launch only automatically when all the parameters are met.
(this was rejected by the military, so the manual launch possibility was included)
Back to the question...
Just remember how complex was the radio proximity fuse setting in the Volhov?
That switch is this at the Neva.
The leftmost setting "RV-SB" is the default automatic mode.
In this mode, the setting of the proximity fuse is automatically depending on the target altitude.
Either "SB" selector block against low altitude targets, or "RV" normal for full sensivity.
The middle setting "RV" is a manual mode, for full sensivity.
The rightmost "K3" is the same as the Volhov, detonate on radio command.
