Yes, i know. I think we had a misunderstanding, so. I thought that "acquire" meant "follow, see", not "engage".
I thought that track = engage step, and acquire= follow step.

well, reformulating the question ... How many targets Fan Song can follow (see) at the same time?

The "75" as an analogue system can display any number of targets.

No point to count those on the screen...

There is no limit on how many targets can be acquired.
The only limit is on target tracking, and that is one.
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Hpasp
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