Hello. Please, might you help me.
What is reason of this noise on the video:

My setup: Flight Controller: Airbot Omni NXT F7.
ESC 4 in 1: - Airbot Typhoon 32 V2.
VTX: Holybro Atlatl HV V2.
Camera: Runcam Phoenics 2.
Antennas Xii 2.
Googles: Viper fxt ver.2
Camera and video transmitter are connected to the built-in flight controller BEC 8V for separate power supply of the video channel.
The wires from the “ground” of the camera and the video transmitter are connected together and soldered to the corresponding contact on the flight controller.
The camera and VTX wire are tvisted together.
An additional capacitor 1000mkF is installed on the ESC controller in parallel with the battery supply.

I had tried to change VTX channel from A1 to R1, and had increase VTX power to 600mwt.
Noise has decrease very small

It looks more like a rolling issue than poor signal or video quality.Even though it’s not rolling it looks like it’s stuttering or getting ready to start rolling or not fully locking on the channel.
 Does the camera settings PAL/NTSC match the beta flight settings on the OSD page?
 There’s auto,PAL and NTSC settings in the OSD page on betaflight.Also in camera settings there’s PAL or NTSC setting.
 Set them up to match or try PAL if you are using NTSC is worth a try.Using auto isn’t recommended.
 You might try turning off the GPS just to eliminate it’s the cause.

   If your video receiver has diversity mode or mix it would be worth a try switching settings.

   Channel F4 is supposed to be one of the best channels for analog fpv and it’s worth a try.

Back to some basics, and it would help if we had a decent picture or two of the video system on the quad.

It looks like PAL/NTSC are possibly unmatched to me, too.

It also looks like the antenna orientation is possibly poor, with severe range deterioration, are both antenna RHCP or both LHCP?

Thank's all for information.
I have checked.
I use NTSC mode in camera and Auto mode in googles and Betaflight OSD setup.
I use Lumenier AXII RHCP Antennas in drone and in googles.
My Viper googles has a diversity mode only. It has patch and omni direct antennas.
But i have checked, i have similar issue with my other aircraft: foam airplane. It has one motor, ESC with onboard 5v BEC and rush tinytank vtx. VTX power source is additional Matek 5v micro BEC. The airplane has no flight controller. This is video of airplane flight:
https://youtu.be/djOsEA7S2Mo?t=29

Common between drone and airplane are googles, VTX band (channel A1), and NTSC video mode.
Therefore i am going to try:
- use PAL mode, and set it directly (not Auto) for camera, googles and Betaflight OSD setup
- set F4 channel to VTX and googles.

(03-May-2023, 06:20 AM)demvlad Wrote: Thank's all for information.
I have checked.
I use NTSC mode in camera and Auto mode in googles and Betaflight OSD setup.
I use Lumenier AXII RHCP Antennas in drone and in googles.
My Viper googles has a diversity mode only. It has patch and omni direct antennas.
But i have checked, i have similar issue with my other aircraft: foam airplane. It has one motor, ESC with onboard 5v BEC and rush tinytank vtx. VTX power source is additional Matek 5v micro BEC. The airplane has no flight controller. This is video of airplane flight:


Common between drone and airplane are googles, VTX band (channel A1), and NTSC video mode.
Therefore i am going to try:
- use PAL mode, and set it directly (not Auto) for camera, googles and Betaflight OSD setup
- set F4 channel to VTX and googles.

   
    Sometimes the only way to solve a problem is by eliminating others.
   Since the airplane does the same behavior it suggests the problem is more likely with the goggles or receiver in the goggles.
  
    There is a setting on the right hand side of page in beta-flight on the OSD page for auto,pal, or NTSC.
  It should match the camera settings.If you have camera set to PAL set OSD setting to PAL.

   It would be worth a try to different antennas in the goggle vrx or one at a time.
 Viper goggles did have a problem with the sma pins breaking off the pads inside screen but I think it was fixed with with V2.
  Also you might try contacting or sending the goggle manufacturer the videos above.
 
 If you recently purchased them definitely get with the vendor.

show us your wireing pls

it looks like you arent on the exactly right channel. did you set the channel manualy on the goggle?

do you have another vtx as reference? the vrx module on the goggle could be the issue

Hello!
I use manual channel setting in googles, not auto.
There are photos my build
                       

(04-May-2023, 05:51 PM)demvlad Wrote: Hello!
I use manual channel setting in googles, not auto.
There are photos my build

  
  One possible source of noise is the sma adapter contacting the frame.
 The sma adapter could be grounded to the frame which could be a source of interference,static or noise.
 Also you might try lightly wiggling all the wires on the quad while watching the video screen to see if there’s any that cause the symptoms to happen when it’s on the bench.
   I’ve had plugs in place but they didn’t fully seat in and make a good enough contact.
    
  Unfortunately since it’s happening with both of your quads it’s starting to point at the video receiver and goggles.

Thank you!
I will experiment.
I'm afrade, there is a googles receiver issue.
I've wrote message to manufacturer and i am waiting an answer.

Sorry you are having a bad experience with video. Hope the mfg gets back to you soon. The second video is much better. To me it appears the channels are correct and the quad is working OK, but the VRx has some issues syncing frames. I wonder if there's a way to wire an external module to those goggles?

others love the mmc connector on the vtx, but they waered out in my case. i ended up soldering the antenna directli on the most mmc vtxs. check the antenna fit on the vtx.

i would also suggest mount the antenna ground not directy on the carbon.

power supply is the fc? battery voltage? or 5v circuit?

it looks properly builded, everything fixed and straped down...
the only thing i see to improve, maybe i cant see it enough, the xt60 leads looks to me like the need a bit more heat or maybe more flux or other solder. reflow it might sort out cold soldering as source.
 just something to try befor gave up the vtx.
( https://intofpv.com/t-many-wires-to-one-pad how i solder many wires)
as a try about system noise, i would solder the + lead of the vtx directly on the lipo in - leave the minus attached o  the fc.

something else which coukd match the issue is a dying osd chip
connect the video s8gnal directli to the fc, for sorting it out as a source.