Stupid questions about ... what I have read and studied.

[ReubenJames]

Originally Posted by Fish

go to NB and scan the band for a 60 hrtz line.
It have to be within 10 nm I think.

I was just about to raise another questions. Nearly all documentation I am reading mention frequencies, and the range of frequencies each type of sonar is capable of handling.

Now tell me please, how much I need to know about frequencies? And what are they?

God, flying a fighter is much much easier!