I will speak about the radars delivered with the Mig-23 variants to Iraq (Mig-23MS, MF, and ML). The radar delivered with the Mig-23MS was the Almaz-23 which was the same delivered with the mig-21bis. That radar was good for nothing; just to summarize. The radar delivered with the Mig-23MF was a Sapfir-23E but interestingly had no capability to launch the R-13M or the R-60. This is an interesting point since the radar mentioned in the second reply by overscan, does have the capability to launch the am weapons. The radar supplied with the Mig-23ML was the Sapfir-23M and not the NOO3. Again it had no capability to launch the R-13M. The technical documentation of the Sapfir-23E was very meager; the main technical documentation was for the Sapfir-23M radar. Here the PRF is 1 KHz and 5 KHz. The quasi-continuous frequency is 100 KHz; it is used only in guiding the R-23R and R-24R Semi Active Radar Homing Missiles. The difference between the western approach and the eastern approach is that the western (not always; the French didnít adopt this approach in the Matra Super-530 missile) approach use a pure carrier while the eastern approach was to use high repetition pulse. The Soviets never used the western solution for guidance; in fact they criticize it in their scientific literature.