The elevation manual angle tracker is sitting first. (check the Vietnamese photo)
He has only the epsilon screen, always in 5km magnification, and the karat tv.
Them sits the range tracker. He can choose the epsilon, or the beta image to his screen.
The last one is the azimuth tracker with a tv also.
They have to track the target between two line (rather than a boresight).
With their big wheels, they change the snr rotation speed, rather than setting its direction.
The neva is similar, just there the two manual tracker is called fi1, fi2, and the fco is the range tracker. (thus the bigger wheel)
Would it possible to simulate at least some of this fun like this (on Volhov) - this example assumes you want to play the Range Tracker:
1) Designate the target the I-32V and I-62V positions as normal (line up, then right click) in elevation and azimuth, but DO NOT lock range. Alternatively, you can have the correct range-rate set initially (so you only have to correct for changes rather than setting it up from zero) by briefly locking up range and then breaking it)
2) Jump to Range Tracking Screen and chase the target with the range-rate wheel. Elevation and Azimuth are effectively in AS-AP.
3) If you want to leave Range Tracking (to play Elevation tracker or to prepare missiles), if your boresight is on the target, you can right click to shift to AS-AP, then you can leave. Otherwise, the range rate will be the last input value and will deviate from the target.