SunshynFF
 lvl.2
Flight distance : 30010 ft
United States
Offline
|
Wow, they did not get what you meant did they..lol. Ok, you might have figured this out already, but anyone else..... the gold plated threaded parts coming from goggles and end of antenna DO NOT matter or relate to a left or right hand antenna. The three types most used at the working end, are pagoda. circular polarized and patch. Pagoda signal almost same as circular polarized, just different design, we'll forget about that for now, lets just concentrate on other two. Most analog rigs, like fatshark goggles or DK ground station, use a diversity unit, with two threaded connections, most pilots put a circular polarized (cp) on one connection and one cp on quad. Second connector on goggle diversity get a patch antenna.
cp antenna, good at signal all around you, like a mushroom cloud shape of coverage, but distance away from you in any directions not great. Patch antenna, also called directional patch, as name state, only works in appx 90 degree cone shape outwards from which ever direction you/antenna are facing, but has longer range that cp antenna. Why diversity works, for one, you get both of best worlds on signal type, a mushroom all around you signal and a direction signal for going further out. Diversity unit checks signal so many times a second, and which ever one is getting strongest signal, that feed is sent to the goggles, all in milliseconds. DJI goggles have quad-versity kind of. What you need to know is the top two work together and the bottom two work together, from what i've read. If you are going to go 2cp and 2patch, then make sure patch are on bottom. They sell a package deal that has 4 patch too, some people are having luck with them. The gold threaded connections have only four variations and it doesn't matter how you connect them as long as one fits inside other, and one has a pin an one a hole. They make fpv 5.8ghz antenna's with other connectors too, mmcx, U.FL etc. none of that matters. ALL OF THEM, are either right hand polarized, or left hand polarized. ALL antennas on goggles and quad, digital or analog, MUST me same direction, all left or all right. Right is more available so you see more. If you race and enter competitions, all three leagues require pilots to have a set of right and left handed antennas. because if two pilots both flying right handed antenna, their channels must be far apart or video can bleed over. One flying left other fly right handed antenna, the two channels can be right next to each other on the band, and won't interfere, so at races they stagger every other pilot with L then R antenna, to avoid signals messing each other up. Clear as mud?? LOL
https://photos.app.goo.gl/AVZi6ZTLHSedJVG2A |
|
lvl.4
Captain
Administrator
lvl.3
Second Officer
lvl.1
