Hi Guys,
Just picked up on the thread after dropping out for ages.
Yes, Edmund is right about Lamda compensation in the 9L homing head (a year ago!). It also used a liquid nitrogen cooled Antimony Sulphide seeker, which was able to detect much lower levels (and frequences) of IR radiation. This meant that it could guide onto the heat plume of the exhaust (as apposed to hot metal in the 9G). This, combined with a 360 degree laser fuse ( as apposed to an IR fuse in the G) meant that the warhead went bang in the centre of the airframe no matter what the aspect. It also had a blast-frag warhead with a pyrophoric disc as apposed to the expanding rod of the 9G (if I remember properly). Altogether a much better weapon.
Certainly my second shot on 8th May would have been marginal if I had been carrying Gs.
Fly safe!