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Antenna Reflector
1028 16 2017-7-26
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Arcicorsa
Second Officer
Flight distance : 235892 ft
Czechia
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I made an antenna reflector for spark .. It adds about 200m to maximum distance. Here's the thing for print and instructions https://www.thingiverse.com/thing:2454228 . Here is flight log without reflector https://healthydrones.com/main?f ... 86ddc7e651052bfdec9 and with reflector https://healthydrones.com/main?f ... _id=GENERALOverview .. With reflector is important targeting on drone all time flight!! Tested in Europe and 5.8Ghz AC/RC link.
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2017-7-26
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ImHereToCrash
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Flight distance : 5014068 ft
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ey those dont look too bad! i may try this next week.      wonder if any other designs and shapes.  
2017-7-26
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ImHereToCrash
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looking at the actual distance though... 2000 feet isn't that much..   considering i taken my ex-sparky out 1200 feet in a moderately congested neighborhood with a lot of wifi signals in the way.    ill still test it next week.
2017-7-26
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Arcicorsa
Second Officer
Flight distance : 235892 ft
Czechia
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ImHereToCrash Posted at 2017-7-26 14:50
ey those dont look too bad! i may try this next week.      wonder if any other designs and shapes.

Design is a calculated, must it to accurate parabola with antenna position in the focus of the parabola.. Any design changes decrease quality.
2017-7-26
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ImHereToCrash
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Arcicorsa Posted at 2017-7-26 14:56
Design is a calculated, must it to accurate parabola with antenna position in the focus of the parabola.. Any design changes decrease quality.

i need to brush up on my RF theory.   i know 2.4Ghz and 5.8ghz are terrible signals for longer distance propagation.       they have a very defined path.. whereas lower frequencies have a much less defined paths and can tend to travel all directions better.

that being said i will do some testing of my own in a week's time..  hopefully up at my family farm. where less wifi interference and much wider open range.
2017-7-26
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Lcalcena
lvl.2
Flight distance : 331804 ft
Paraguay
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I added  thing to make on thingiverse
Thanks!!
2017-7-26
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roberteb
lvl.3
Flight distance : 131417 ft
Nigeria
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ImHereToCrash Posted at 2017-7-26 14:56
looking at the actual distance though... 2000 feet isn't that much..   considering i taken my ex-sparky out 1200 feet in a moderately congested neighborhood with a lot of wifi signals in the way.    ill still test it next week.

Is EU, lower transmit output, according DJI only 1000ft
2017-7-26
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Arcicorsa
Second Officer
Flight distance : 235892 ft
Czechia
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ImHereToCrash Posted at 2017-7-26 15:12
i need to brush up on my RF theory.   i know 2.4Ghz and 5.8ghz are terrible signals for longer distance propagation.       they have a very defined path.. whereas lower frequencies have a much less defined paths and can tend to travel all directions better.

that being said i will do some testing of my own in a week's time..  hopefully up at my family farm. where less wifi interference and much wider open range.

This thing is only a parabola, no antenna with dimension dependence of frequency. Parabola does not have dimensions a dependence on frequency. It acts like a mirror.
2017-7-26
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ImHereToCrash
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Arcicorsa Posted at 2017-7-26 15:22
This thing is only a parabola, no antenna with dimension dependence of frequency. Parabola does not have dimensions a dependence on frequency. It acts like a mirror.

your right.      

still i am curious enough to test it
2017-7-26
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OneMatt
lvl.4
Flight distance : 155984 ft
Canada
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Ive used these things on my Phantom 3, and had solid, full bars signal at 3km. No glitching or anything. I have ordered some of these for my Spark.

For those without access to a 3D printer, you can order these from goodluckbuy or aliexpress, just search for "mavic range booster" and you get many options.
2017-7-26
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Arcicorsa
Second Officer
Flight distance : 235892 ft
Czechia
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ImHereToCrash Posted at 2017-7-26 15:29
your right.      

still i am curious enough to test it

I am intersted for your test. Please share your result .
2017-7-26
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ImHereToCrash
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Arcicorsa Posted at 2017-7-26 15:33
I am intersted for your test. Please share your result  .

will hopefully be testing next week i plan on at the very least posting numbers if not a log
2017-7-26
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lafoto
Second Officer
Flight distance : 1402680 ft
Portugal
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Nice!... Great work... congrats...
2017-7-30
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Bradders
Second Officer
Flight distance : 862283 ft
United Kingdom
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These are very similar to these are they ? http://amzn.to/2tUKcWZ
2017-7-30
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ImHereToCrash
Captain
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only have 2 complaints about reflectors.. one is they look silly..  and 2 is they form a beam.. that beam maybe very strong and allows better range but it can also really be weak on the outer edges..

i has seen a few mods that actually do work that replace the antennas (hardware modding, so be careful) with a flat box that apparently works really well.. but then again who knows.
2017-7-30
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Didiko
First Officer
Flight distance : 18399 ft
Belgium
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If you are out for a long distance flight in a given direction, why not.

Otherwise it may affect the "overall range", but I suppose that we tend to point "naturally" the RC towards the drone while in flight.
2017-7-30
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Lucas775
Captain
Flight distance : 11730860 ft
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United States
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Great work! you should start selling these.
2017-7-30
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