Originally Posted By: jazjar
OK, what is up with SA-3 SDC? Is the system not finnicky enough without it on? I keep losing lock every five seconds with it on, even with all the parameters ( velocity switch ) and using or trying to use the little knob thingy.


Here is the diagrams of the target signal strength vs target Doppler speed.

First shows the 80km mode, where the usage of SDC is not recommended.
The middle diagram shows the 40km Slow speed setting (V<300m/s), while the lower is for 40km high speed (V<600m/s).



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