but the G550 has a AEW variant the the Israelis operate a newer version of the Phalcon called the EL/W-2085 which is much more capable than the current phalcon
G550 Airborne Early Warning: Israel has acquired a number of G550s, fitted with Elta's EL/W-2085 sensor package (a newer derivative of the Phalcon system) for Airborne Early Warning (AEW) use and named the aircraft Eitam. This aircraft is heavily modified for the AEW role by Gulfstream's partner, IAI, and is also called CAEW (Conformal Airborne Early Warning) by Gulfstream Special Missions Department. Israel has also acquired a number of communications jamming equipped G550s dubbed SEMA (Special Electronic Missions Aircraft) with systems integration also carried out by IAI.[8] Singapore ordered four similar G550 CAEW aircraft equipped with the EL/W-2085 sensor package from Gulfstream and IAI.[9][10]
we should have just gotten this G550 AEW variant and put our DRDO AWACS system on it mainly because the G550 does not need to be refueled and can last several hours before even having to refuel + its faster
the R-99's are much more expensive and less capable