FPV Noise white/black interference

rafareusch

rafareusch

Member
Hey guys. Im new to the hobby and I’m purchasing a Nazgul5 4s of a friend. The only concern I have is the noise on the video feed.


The nazgul already has a capacitor on the lipo pads.
The vtx is a akk infinite dvr
The Camera is powered by the FC (the vtx has 5v too, I’m planning to power the camera from there)
The diagonal black lines only come up when armed (saw some people solving with a lcfilter)
The question I have regarding LC filter is most of the filters are rated to 16v, since I’m running 4S could this be an issue?
Other thing I noticed, even with the quad landed and disarmed you can see some noise on the feed
The goggles is a ev800d with a geprc patch antenna and a foxxer diversity. What can this be?
 
There will always be some analog noise I think main thing is want to adjust your rates to dampen out the mid stick so things aren't so sensitive/twitchy when flying smoother/slower it's easier to track things even if video isn't ideal.

 
In vid above was flying angle mode so naturally much smoother I think with tiny guys especially but still can see analog has some blippies just learn to fly through on bigger quads can have more noise to deal with overall from more power drawn by esc etc. I've had good luck with capacitors sometimes (low esr cap on esc power input). I'm using laforge module in hdos for dvr above think immersion rc antenna one omni one patch.
 
Digital is far better with regard to rejecting noise from the signal but if too much noise then just lose the video feed entirely for a few moments at a time so not impervious to it. Flying digital also introduces more noise to analog signals if you are near anything emitting in the 5.8Ghz band then could just be external interference. Always good to check all your antenna connectors as well make sure nothing has been knocked loose it happens pretty often if things aren't really well secured.


Worse vid in this one but was flying with buddy there so some interference from his quad too I'm sure but if know the area can zip around and dive through nearly invisible gaps :)
 
I get that analog is much noisier, but on the video I uploaded, the noise is much bigger than yours, and I was very very close to my drone. Maybe these foxxer antenna from the goggles is worse than the ev800d stock antenna. Even with the drone landed I can see some noise on the screen, turning the video black and white. (you can see on the end of my video)
 
Guessing based on age you didn't grow up on analog TV but effectively quad is a weak analog tv station, trying different antenna is cheapest/fastest option, guess is that or the receiver makes most difference, that said aside from twitchy i think could totally fly through those blips. Make sure on correct channel/band as well could be tuned into a frequency that is close but not exactly right.
 
I would also try double checking connection on your cap if it is bouncing around and not solid connection could hurt more than helps.
 
Agree with the channel/band. I used to use those goggles. They will stop on anything close. Searching from a few meters away will narrow it down. The picture seemed most effected when behind you. I would try three matched circular antennas rather than the patch.
 
I'll check about the goggles, this could be an issue. I will set manually in the next flight. I left my drone at my other house, when I get the change I'll do some maintenance and check the solder joints too, also power the camera from the vtx. Thanks guys
 
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