They are hardly accurate enough to hit moving ground radar targets let alone aircraft iirc.
Also, no aircraft ever used the active guided R-27s in service. They were proposed or tested but never saw service.
oh ok… so unless I* band radars are common at a BR these missiles wont be very useful…
but what about the EA or the EM (< this is only for the SU-27 AFAIK because the MiG29 wasnt made compatible or something)
10-20GHz is J-band. So for example the R-27P wouldn’t be able to target the Tornado F.3 as it has an I-Band radar. The targets will have to be in the 10-20GHz range.
The ALARM anti radiation missile has a range of 2-18GHz which covers most radars in the game.
The R-27P is going to be pretty useless in its A2A role and in A2G it’s going to be pretty limited as well. As most search radars are very low band so it will be limited to tracking radars and if you’re being tracked that’s not a great situation to be in.
This paragraph from David Gledhill’s book on the F.3 implies that it was a concern for Tornado pilots. But maybe Britain wasn’t sure of it’s capabilities so just assumed the worst case scenario (that it could be used against fighters).
The main tracking method seems to be a (emphasis on the SEEMS) automatic radio emission detecting seeker head which scans the ‘forward hemisphere’. i doubt it is capable of scanning the entirety of a hemisphere keeping in mind gimbal limits.