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Attitude for Altitude


Crazy flyer/crasher :D
Haha, yeah I believe that they can do that as well :D

With normal radios etc. but probably with some modified antennas etc.. That should be possible.


Crazy flyer/crasher :D
WOW! That would be a really cool episode! Maybe a rocket booster?

But I really like the question of the Klones! Probably doing an experiment of how much air density loss you have up there and explain why you need more thrust :D Would also give a nice episode


Senior Member
This would make a great episode, the Josh's could explain the different altitude ceilings for each radio type 2.4ghz, 900mhz, 30mhz, that kind of thing. Even if they made a scratch build for maximum altitude that would be a cool show to watch.



Crazy flyer/crasher :D
Yeah just to test out the limits of our usual equipment by which I mean:

Simple DX6i and HK video system. So practically the most mainstream stuff.
one thing theyll have to consider with this is full size air traffic! normally i think we arent spose to fly above 400 ft here in oz not sure what it is in the US but you guys better make sure



Crazy flyer/crasher :D
Yeah that would be an issue to solve. Seeing full size aircrafts flying todars you are definitely not good! For you and for your model!

The biggest issue would still be to get the wanted range with our conventional stuff so not using those Dragonlink things.


Old age member
The free space is normally no problem as the commercial flights are a lot higher 10 000 m/ 30 000 ft.
Most radios should manage the distance in m - not in ft with normal long distance receivers.
The problem is to see the plane to be able to control it.
I tried to find the world record but did not see it at the moment. The pilot are sitting in a chair looking at the plane with a telescope.....
I believe that you need a jet enginge/turbo charger/compressor or thermal to get really high in the "thin air".
Normal cars without turbo are "weak" when driving in the rockies 14 000 ft above sea level.


Crazy flyer/crasher :D

But does the the thin air affect the radio signal in any way? I mean we have different types of antennas which if we point them up we could get at least a few km up in the sky.


Old age member
Rain and snow in the air absorbs the signal - "thin air" is better - and never "point" the antenna towards the plane.

Brian fred carr

Site Moderator
Well this is turning out to be quite a good topic....But i think flitetest should find out the stats on the world record
and aim to beat it. It would make a great episode and answer lots of questions.


Crazy flyer/crasher :D
Yes it would but beating Trappy (Isn´t he the one with the furthest distance) will be a pretty tough challenge!

If thin air is even better then in theory you should get more signal range with the direction up so away from the centre of earth then you would get tangentially to to the surface of earth. So in difficulty decreasing with distance as the air gets thinner and thinner.

@pgerts: Antennas have the "Weak spot" at those points directly above or under them. With a normal rubber ducky antenna the antennas themselves should always be staying parallel otherwise ending up with sagnificant loss in connection.


Junior Member
The free space is normally no problem as the commercial flights are a lot higher 10 000 m/ 30 000 ft.
Don't forget approaches and non-jet aircraft. You should definitely check out a map of the airspace and routes in the vicinity of the place you are flying at. Being right on a airway would mean trouble.
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It'd probably be best to design a plane with a really low wing loading and try to catch some thermals on the way up rather than building a super heavy sport plane and trying to muscle the way up with a huge motor and heavy batteries. I've had my ember 2 up so high it was just a speck, I know that isn't saying much seeing how small it is, but when I caught the thermals it was like an elevator going up!


Crazy flyer/crasher :D
Yeah that is actually a really good idea.

With a little 500mAh 2S you would power the receiver only which would only have to keep in touch with your TX and power a few servos. Some kind of a slope soarer for flying around and a Mini FPV gear which doesn´t need much power as well. :)

I think catching thermals is quite difficult though. I fly in a region which is straight next to a forest and a lot of air turbulances are around there as well.
Motor? Jet engine? Catch Thermals? Weather Balloon is the answer. Get an FPV power only glider and take her up with a weather balloon and an altimeter release.