What is I think the most important about F-16's and AWACS is it will give Ukraine the ability to shoot down cruise missiles and shaheed drones. Ukraine (more like the US) knows when a cruise missile attack is coming, and I mean time wise, the problem is they don't have the aircraft to successfully shoot them down the F-16's will remedy that.
Second most important is SEAD/DEAD. Those F-16's need to come like this....
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The HARM receiver is really necessary it can geolocate IAD radar that is painting the fighter and datalink the info to other Vipers which upload the info to HARM missiles very quickly and turning off the radar won't help. Vipers will know if the radar is too far to take a shot without the receiver Vipers will only know type of radar that is painting them but won't know distance just general area. Centerline EW pod is also important allowing Vipers to get much closer to frontline targets at high altitudes.
Russian fanboys will bring up r-37M but r-37M hasn't had success against soviet era flankers and migs since Russian fighters don't fly anywhere near the frontline.