You are deflecting from topic to prove your worth.
Still you can't prove fn 90 is a RAM. Because the fact is that it isn't one.
It's a reverse engineered crotale there is no surprise here everyone knows that.
http://www.military-today.com/missiles/hq7.htm
And that's what I told about IR signature.
No matter how high the IR is you need a medium defence sam than a PDM to be safe from a missile of this type.
you do not have enough time to track a mach 3.5 target and shoot it down given that a saturated attack can also take place.
Also on a earlier Post you ridiculated shtl missile system.I hope you know that there are 8-9 different varients of shtl and each one of them is an improvement of the other. Shtl is the primary air defence missile of of Russian Navy and is used in their newest gringovich class Frigates.