I believe the F-16s are considered to be F-16AM/BM.
Here's a link...scroll down to "F-16AM/BM Block 20 MLU".
https://en.wikipedia.org/wiki/General_Dynamics_F-16_Fighting_Falcon_variants
FTA: The F-16 Mid-Life Update (MLU) package was designed to upgrade the cockpit and avionics to the equivalent of that on the F-16C/D Block 50/52; add the ability to employ radar-guided air-to-air missiles; and to generally enhance the operational performance and improve the reliability, supportability and maintainability of the aircraft.
That’s an avionics upgrade, not a radar upgrade. The original AN/APG-66 radars had a range of 35 miles. The upgrade was the AN/APG-68 and had a range of 150 miles. I just don’t know if any of these planes ever got that upgrade. It would be a huge win for Ukraine if they did.