Hello.
With each additional patch, the radar in Viper deteriorates.
Target at 18000ft, head on, sees only 18 miles away ??
If you work with AWACS, at least you know that something is out there.
If there is no AWACS or it is too far away, it is better to fly the FC3 than the $ 60 module.
A colleague in JF17 who was 15 miles behind me saw the same goal much earlier.