ELRS can easily go 25km for the radio link, and DJI O3 goes ~24km for the video.
For radio it basically doesn't make sense to use anything other than ELRS any more, it's years ahead from anything else.
Thanks, this gives me something to look into. I've been too busy the past few years to fly my long range planes and need to catch up on what's changed.
Oh you're going to love it! Feel free to email me if you want more info.