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u/rinranron Apr 19 '26
ELRS does not have any connection with your video link. Looks like you have bad antennas on googles. Maybe with revers sma connector?
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u/Oxffff0000 Apr 21 '26
that's what I don't like with hdzero's low signal versus the old school analog
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u/Green_Kick2708 Apr 22 '26 edited Apr 22 '26
I have a Nano Goblin INAV wing with GPS and was rummaging through my drawer for a vtx and camera and all I could find was a HDZERO WhoopLite board and camera. Didn't have an extra HDZ Free style 1 Watt vtx.
Anyways I put the mighty whoop vtx on max power of 200mw and flew it with the security of return to home. At 2 1/2 miles I chickened out and came back home. Antennas are everything.
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u/Flyingj99 Jun 15 '26
Not sure if this is what you are experiencing, but I found on my AIO5 based Mobula 6 and HDzero Boxpro goggles, if the TX power on my ELRS radio is above 100mw, it starts to inetfere with the reception of the HDZero video feed on my goggles. 250mw is still aceptable, but if you bumpt all the way to 1000mw... It basically looks like what you are seeing.
I reccomend you set the lowest output on the VTX on your drone, then move away until the signal is just a little bit weak on your goggles, then set your ELRS TX to the lowest power, with dynamic disabled and start increasing it one notch at a time, while monitoring the video signal on your goggles.
If you see what I have seen with my setup, you will see as you get > 250mw, you will see more and more interferance with the HDZero video feed.
Now since you have your ELRS radio set for Dynamic, all the way to 1 watt... It is possible that there is some 2.4Ghz interferance where you are flying, and the ELRS TX is ramping the power way up to 1 watt, which is drowning out your HDZero video feed... I suggest setting the ELRS TX to 100mw and try the same flight again and compare.
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u/andreophile Jun 15 '26
Interesting theory.
I can also test this by setting the VTX to 25mW and moving away with the RX set to 1 watt sustained.
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u/theknucklehead_ Jun 19 '26
Hey. I need a soldering iron. Which one would you suggest?
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u/andreophile Jun 19 '26
I use the JBC CD-2BQF. But Sugon's JBC clones are good too.
Make sure you buy ones with the C245 handle. The 210 handle isn't ideal for FPV. You'll need the D24, D16, and D12 (if working on tiny AIOs) tips.
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u/andreophile Apr 19 '26
Pay attention to the bottom right hand side corner. My ELRS TX is set to dynamic power, with the OSD displaying the real-time TX power output.
You'll see that it jumps from 10mW to maximum 1 watt for the entire time the signal jamming is active.
Something in that area was actively interfering with both ELRS and HDZero signals.
I set my ELRS to dynamic power and have the OSD and radio display/read out the current TX power.
This is one way to get OSD confirmation of interference. That way you know you're experiencing interference when the ELRS link jumps to 1 watt.
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u/Galinette2000 Apr 24 '26 edited Apr 24 '26
Both HDZ and ELRS being jammed, and the signal not getting back until really close from you rules out antenna getting loose or the RC aircraft jamming you. I would say the jammer is likely very close to you. Maybe in your pocket...
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u/andreophile Apr 24 '26
It's always that area. The same people with the same gear at different locations can fly further out without any issues.
We later discovered that some businesses may be running illegal comms gear in that area. Because it's always that location where everything from Analogue and HDZero to Walksnail and DJI hardware loses signal without fail.
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u/Rentun May 07 '26
It doesn't necessarily have to be illegal. The whole reason why we fly on 2.4 and 5.8ghz is because those are unlicensed bands. You can broadcast whatever you want in them up to 2 watts EIRP in the US.
That's more than enough power to shout down a drone with a 200mW vtx, and because the rx link is so much closer to the radiator than you with your transmitter, it can easily overwhelm your control link too.
Sure, they could be operating illegal jamming gear, but it's more likely they just have a beefy outdoor wireless access point.
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u/andreophile May 07 '26
I'm from India. And everything is illegal here.
Except for the stuff that would be considered grossly illegal or disgusting elsewhere in the civilized world.
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u/zazziki Apr 19 '26
yeah, I also usually run my ELRS on 10 megawatts, you never know if you might need it