So today I tried the new antenna, gosh it is so convenient to use, very small footprint and very light.
Now to the important things. I managed slightly over 3km (remember we have CE over here in the UK) which is my all-time record!
I could have gone farther but as I predicted the battery let me down. Actually, the winds were also very strong.
I was below the return to home mark few times during the flight, making the flight ever so interesting.
So the final judgement on the antenna: 4/5
Here is the link I bought it from: https://www.ebay.co.uk/itm/16DBI-2-4-5-8GHz-Extended-Range-Antenna-Wifi-Signal-Booster-For-DJI-Series-Drone/162612783776?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D2%26asc%3D49138%26meid%3Db78f97acb53e4ff78db4ba1ce32b3043%26pid%3D100005%26rk%3D3%26rkt%3D12%26sd%3D232604156093%26itm%3D162612783776&_trksid=p2047675.c100005.m1851
Hope it helps!