I disagree. It should be at 11.7
Israel Aerospace Industries F-5E Tiger III Plus - One of the most powerful Northrop F-5 in the world
If gaijin added it only with python III it would have that BR, but it uses Python IV and Derby with those missiles it will probably be in BR 13.0 like the Kfir C.10 event with Derby
+1 for Israel
Look here I found another photo of a Chilean F-5F where it is mounted on the belly of the plane which is where the F-5s carry these additional cannon pods.

Unlike the modernized F-5 from Thailand or Brazil, the Chilean one is the only one that retains both 20mm cannons despite having a new, much more powerful radar. It also includes a better RWR, unlike the Thai F-5, which maintains the old American RWR.
but does it get active missiles?
It had Derbys integrated, but like Thailand they never used any on them. If it’s added ingame it will get them like the Thai F-5TH given the present compatibility.
You’re absolutely right about the derbies. I also wonder if the Thai F-5 actually used the AIM-9M or if it was just added because it’s in the Thai Air Force’s inventory.
I believe they did, either that or 9Ls because I’ve seen them carry sidewinders with 9L/9M control surfaces of memory serve me right. they also used the IRIS-Ts on top of that, so if it gets them later down the line the 9Ms won’t even matter lol
Inst the chilean f5 able to carry debys in all of its missile pylons?
It’s unknown. I’ve yet to see proof it can be carried there, or stated proof the rail is compatible. Id like to infer it’s possible given the Pythons can be, but its still a different missile so unless someone can find proof the Derby can be used on the Lau-100/Lau-101 rail, it won’t get them.
Yesterday I asked a Brazilian friend about this, as I understand that only the Brazilian F-5s actually used the Derby missile, and he replied that it is probably not possible to carry Derbys on the external pylon due to weight issues. This would explain why there are no photos of 4 Derbys at the same time and only 2 on the internal pylons.
Weight issues wouldn’t make sense when the Python 4 weighs about the same as the Derby (like just barely more than the derby), and it’s been seen using them on those stations. Likely a compatibility issue with the missile and rail.

dont like the derby and python 4 use like the same rail?
The Lau-100/101 is a different rail then the ones the Python 4 and Derby are stated to be compatible with, so the Python 4 being used on it is already strange as is given what’s known. However Derbys still haven’t been seen used on it. I can’t attest to them fully being able to use the same rails, the Derbys body is based on the Python 4 but it isn’t directly the same.
9P4 & Python 3/4 and no 9M capability
There are several fairly reliable sources that indicate that the Chilean Air Force (FACH) actually did buy the Derbys and they even give the exact amount, although it is still strange that they have never been seen.




They even mention that the F-16AM/BM MLU Block 15 use the Derby as well.









