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| TerenceChan
rrApprentice Singapore |
Beam-forming for FPV drones The phase shift antenna arrays are used everywhere for RF tracking, except in our FPV hobby, which is a shame. It’s just like the way the “common” smartphone we use everyday, whose technology, if used for this hobby, would outperform most FPV recreational electronics in terms of speed, form factor and resilience. Anyway, for short, I started building my own FPV beamforming antenna about a year ago and this tiring project is finally coming to fruition. It works very well, not extremely well, but I'm really glad I could go that far. Hopefully it will be a proof of concept to bring the big players like VAS, TrueRC, ImersionRC to develop this type of modern tracking antenna.
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| TerenceChan
rrApprentice Singapore |
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| TerenceChan
rrApprentice Singapore |
5db Omni Antenna for DJI Digital FPV After using 4 biquads on my DJI Digital Goggles for a while, I decided to swap the top 2 biquads with omni-directional antennas for better video in a bando environment. However, this also resulted in less video range in an open area. I started looking for higher gain linear Omni antennas and to my delight, a company called Maple Wireless actually made 5db linear Omni antennas with RP-SMA plug, for connecting to the DJI digital goggles.
Here’s a signal strength test I did, in comparison with a normal 2DB rubber ducky antenna: |
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| TerenceChan
rrApprentice Singapore |
2021 now, let’s try antenna tracker Here is an interesting attempt of mine to use an analog antenna tracker (designed by ibcrazy) on the DJI Digital FPV drone..
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| TerenceChan
rrApprentice Singapore |
Clone of VAS Pepperbox or TrueRC X²-AIR Antenna Recently, Maple-wireless (a China company) had been gaining traction in this hobby with their 5.8ghz antennas. Their latest one caught my attention as it looks like an array of 2 patches in a vertical layout. They called it the “Leaf Antenna” and the specs look promising (on paper). I bought one to try it out and it exceeded my expectations although its performance is not nearly as good as the VAS pepperbox or TrueRC X²-AIR Antenna.
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| TerenceChan
rrApprentice Singapore |
I have a cheap long range 2.4g transmitter for FPV There has been so much hype on the new Jumper T-lite transmitter. Since my DX7 died, I grabbed a T-Lite and what’s next? To fly FPV, I modified it for long range.
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