DJI FPV Antenna Test improved! (GPS + SRT = good comparison of Lollipop vs Patches)

Here's my take on practical antenna-testing for DJI FPV goggles. A lot of DJI users ask me, "which antenna should I use for decent range?".

Stock DJI Antennas (in the air and on your goggles) are ok, but with the cheapest of options you can gain way better results. I swap the air units antennas for RHCP so I can use all my normal 5.8 antennas that I collected over the years. (DJI antennas are not really different from what we used in the analog world). On the AirUnit you need: mmcx RHCP antennas (if RHCP is what you use on goggles). I use either Speedybee or Foxeer Lollipop mmcx antennas. Caddx Vista: attention - here you need "UFL" connector instead of mmcx! Foxeer Lollipop stubbies would be very convenient, but my previous measurements indicate that they are especially weak "overhead" (in the antenna null). Normal Lollipop (the ones with coax cable) are relativly small and have good performance. 2 of them cost around 20$ currently on banggood - so for 40$ you can have the goggles fitted with new antennas, if you dont already have these from analog times... Watch out - you also need RP SMA to SMA adaptors! Longrange combo: 2 omnis (the said Lollipop) on top (yes, on top - they look like horns there as well) 2 patches on the bottom ports (if possible use an 45° adaptor to point them straight or even up a bit!) In this video you see how much of a difference you can expect between already tuned Lollis and the Patch combo. Since I now have GPS RTH safety, I can almost go to the edge of my reception. With the SG325 iNav copter here I have the luxury of an SD card for blackbox logging - and therefore I get good GPS data (check Pawels tutorial on how to convert blackbox logs to GPX files for google earth: https://www.youtube.com/watch?v=GEGywqPD2Uk). And with my little script (https://youtu.be/s0Y-P3RrMDI ) I can convert the subtitles (SRT) from the goggles to Excel files and make nice charts which show you the bitrate over time rather then just the number overlay. That makes it much easier to judge the performance over the whole flight. SRT to CSV converter script: https://bit.ly/2Zr9Gs6 Test setup: 25mw, current firmware (as of 16.9.2020) 50mbit mode, high quality SpeedyBee Antenna on Caddx Vista Crossfire for control link Standing next to a road free LOS to the fiel, nothing blocks my view to the copter. "fly as long as you feel comfortable" - I returned when bitrate dropped below 5mbit too often. Summer, low humidity, 28° all flights around 5min from each other.