I noticed that I only needed to use the reflector on 1 antenna. adding the 2nd reflector barely did anything. I think I may try the original 12dbi version. my smaller versions barely worked. the 9dbi version gave me maybe 10-50% more range. will have to do more testing to be sure, I didn't realize until I was done flying that it takes a few seconds for signal to recover... its definitely not instant...
DIY Antenna Booster for Phantom 3
- Thread starter PVFlyer
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It seems a collinear folded dipole antenna at 1/4 wave length.. Really basic pcb antenna. To make a reflector you need >1 wave length focal plane distance from radiator. 1 wave length (~12.5cm) is not practical, so you can short to 1/2, loosing few dbi... To regain some dbi I will use a parabolic reflector... But for what I see in your images, the reflector seems too near to antenna radiator... What calculations have you used ?
Thanks for the video. That confirmed my speculation of dual band PCB antenna, though P3 only use 2.4G antenna or eliminating 5.8G one.
I think taller/wider reflector increasing gain (narrowing beamwidth), but flying Phantom needs to balance the gain and beamwidth.
well, I ordered a 3D printer just so I can print some of these out and maybe a couple other projects.
gonna print the 9dbi, 12dbi windsurfer and one similar to david's that will fit with both antennas parallel...
I know everyone at my field will want one, once they see that it works...
Lowest price on a Da Vinci: http://www.newegg.com/Product/Produ...8840001&cm_re=da_vinci-_-28-840-001-_-Product
$299 free shipping, no tax in NY
gonna print the 9dbi, 12dbi windsurfer and one similar to david's that will fit with both antennas parallel...
I know everyone at my field will want one, once they see that it works...
Lowest price on a Da Vinci: http://www.newegg.com/Product/Produ...8840001&cm_re=da_vinci-_-28-840-001-_-Product
$299 free shipping, no tax in NY
This is what I made based off the original post PDF file.
I went from 1000-1600 feet to over 5000 Ft in distance. I have noticed they seem pretty directional due to their smaller size.
For example if I am flying the drone straight up and the signal become weak I can point the reflectors at the drone and the signal increases right away.
I would be curious to see different dimension and curve designs.
I went from 1000-1600 feet to over 5000 Ft in distance. I have noticed they seem pretty directional due to their smaller size.
For example if I am flying the drone straight up and the signal become weak I can point the reflectors at the drone and the signal increases right away.
I would be curious to see different dimension and curve designs.
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Which model phantom?Flew 2.5 Miles (4km) out today with my DIY parabolic deflectors. Had full signal strength all the time. My next long distance goal is 3.5 miles. This mod works fantastic!! The only limiting factor now is battery capacity
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David...
Thanks for the continued design work. Do I assume correctly that current orders will get this design ?
:harry
I would love to order this but I do not see it on your eBay store. Did you pull it down?
Also should the curve be greater to better focus the signal towards the P3?
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This is nice idea, clean and easy to install. What's the distance between reflector and focal plane (RC antenna) ?
I like your designs as well! Is it at all possible to do a pre-order? I am in South Africa and the delivery lead-times are very long! I also have some other items for my QX2 in my cart ready to go!.
This past weekend, I tested the WiFi antennas and got ~5200' @ 375' Alt.
Last evening, same spot, flight path and using stock antennas, I got ~6300' @ 400' Alt.
More flights and testing to come....
Last evening, same spot, flight path and using stock antennas, I got ~6300' @ 400' Alt.
More flights and testing to come....
Am I correct in saying the major advantage to your design over the wind surfer it's less directional while still providing high gain?
Can you please post a link to your eBay store.
N017RW
Premium Pilot
In simple terms regardless of the method used, gain and directivity are inversely proportional.
The gain numbers tossed around are dBi where the 'i' means isotropic or, more simply, omnidirectional.
The isotropic antenna is hypothetical as it represents perfection. Thus all other are antennas are compared to this perfect radiator when using the "i".
As you gather the radiated energy and direct or limit it's propagation pattern you can change the effective 'strength' of that energy in the manner or pattern you wish. Increasing in some area(s) and decreasing in others.
It's an engineering trade-off dependng on the application.
The gain numbers tossed around are dBi where the 'i' means isotropic or, more simply, omnidirectional.
The isotropic antenna is hypothetical as it represents perfection. Thus all other are antennas are compared to this perfect radiator when using the "i".
As you gather the radiated energy and direct or limit it's propagation pattern you can change the effective 'strength' of that energy in the manner or pattern you wish. Increasing in some area(s) and decreasing in others.
It's an engineering trade-off dependng on the application.
I had my order in(ebay) on the 13th,there were still 6 of them. I figured I would have it by now,but I havent even gotten a shipping notice?
Any word on it?? Thanks
I'm interested in a comparison between the original poster's cardboard windsurfer design and this 3d print.
Any more feedback on the cardboard windsurfers?
Any more feedback on the cardboard windsurfers?
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