FPV

fpv blue
https://fpv.blue/ I've last posted on this website a couple of years back and I'm sad to see activity decreased lately (I used to be an avid reader as well).

For people that haven't followed or weren't interested I've now spent some time developing a 2.4 GHz version of the fpv.blue video transmission system, I've tested it to 17km @ 700mW and 7km @ 100mW and I'm now turning the prototypes into the smallest device possible for the transmitter and a handy injection-moulded receiver so that you can fix it at the back of your radio (alongside an optional 900 MHz unit) or mount it on a tripod.

The system will have Mavlink and RC control over the 2.4 GHz link, a very low latency (25ms added), 720p@60fps, 1080p@30fps, two switchable camera/HDMI inputs and a flexible/long video input cable, so that the devices can be placed anywhere on the plane/drone/gimbal.

The full preelimary specifications are here: https://fpv.blue/

And you can see two test videos here:

https://www.youtube.com/watch?v=LUFik9Lj484

https://www.youtube.com/watch?v=jl5U2PtNyXg

I've also opened preorders for the product. I don't expect people to be placing an order for a product there is no picture of, but you can do it. from https://diydrones.com/profiles/blogs/fpv-blue-2-4-ghz-hd-downlink-updates

Video below LOS
http://www.rcgroups.com/forums/showthread.php?t=2120863  It started discussing this guy's videos http://fpvlab.com/forums/showthread.php?23792-how-does-this-guy-do-it/page1 He's been very cagey about giving up any details, but after piecing together clues from his vids, we determined that he's got three Naza equipped quads. 1 video relay, 1 control relay, and the FPV quad. We figure he uses two relays to provide physical separation between 433Mhz UHF Tx and his 1.3Ghz video receiver to avoid noise from 3rd order harmonics. I set out to prove that what he's doing with two relays, could be done with one using properly filtered gear, and vertical separation (hang 433Mhz Tx below the quad with video Rx on top, so they're in each others' antenna nulls). As a bonus, along the way I figured out how to consolidate control into a single transmitter. Here's the result.

Wi-fi video
http://diydrones.com/forum/topics/3-km-hd-fpv-system-using-commodity-hardware ,

https://befinitiv.wordpress.com/wifibroadcast-analog-like-transmission-of-live-video-data/