Quote Originally Posted by 12L14 View Post
The one on third photo is MiG-23, those above are 21.

Trainers seems to be late production MiG-21UM(i think i see antenna mast there), the other one is MiG-21bis(i think it is of 75B variety), so they can be of german, hungarian, soviet or bulgarian origin.

Guess you're right, they just don't usually have a radome grafted over the engine intake. They'll never fly like that. MIG-23's have largish boxy intakes on the side of aircraft just aft of the cockpit, as you can see in that third photo.