Gaza, flying in the States will be completely different to UK anyway, as not only do they have different rules, different airspace and different phraseology, they have different radar coverage too. In the UK at LATCC, we can only guarantee full coverage above FL75, unless, as is current in some areas like ORTAC (jersey rte from UK), coverage is improved to be better at the lower levels.
At most London radar positions at LATCC, getting any service outside CAS is lucky, a radar service, then it must be your birthday! This is due to the fact that each radar is 'flowed' to handle a certain number of a/c per hour, and as the airspace is all class A/B, all a/c are under Radar Control, therefore no need to seperate from any others but those in contact inside CAS, leaving little time for any others. I hope this puts the ATC point across fairly clearly, and the FIS / RIS / RAS rules I believe are in the Air Navigation Order.
I've just found the 'chirp' this came from and read the article for myself. What I first posted (above) isn't really relevent, but slightly informative anyhow!! However, getting a FIS from a potential radar unit cannot be relied upon to give radar traffic info, who says the radar is switched on and working!?! I know one reasonably big AFld in SE England that has radar only when an approach controller is in (not very often!!!!!) Be sure to be sure!
[This message has been edited by 5milesbaby (edited 31 January 2001).]