[CQ-Contest] Hexacopter

David Gilbert xdavid at cis-broadband.com
Wed Aug 18 10:07:25 PDT 2010

RF is different.  Are you saying you'd be willing to touch the tip of a 
160m vertical with a KW being fed to it, even if you were just floating 
up there?  I doubt it.   Besides, there would be other proximity 
considerations due to the power feed that would also be running up to 
the Hexacopter.

It would seem to make sense to suspend the radiator from several feet of 
insulating line and just run the power feed up to the Hexactopter, but I 
still think it would necessary to be pretty careful about RF coupling to 
the power wires.

In any case, I wasn't trying to engineer this idea ... I don't know 
enough about the Hexacopter to do that.  I just thought it was an 
interesting concept.

Dave   AB7E

On 8/18/2010 5:46 AM, Rex Lint wrote:
> As long as the chopper is not at ground potential, the RF should't be a
> factor... kinda like a bird sitting on a 30KV transmission line.
>      -Rex-
>       Rex Lint, Consultant
>       26 Brek Drive
>       Merrimack, NH 03054
>       PH:    603-860-7651    
> -----Original Message-----
> From: cq-contest-bounces at contesting.com
> [mailto:cq-contest-bounces at contesting.com] On Behalf Of David Gilbert
> Sent: Wednesday, August 18, 2010 1:48 AM
> To: cq-contest at contesting.com
> Subject: [CQ-Contest] Hexacopter
> I see that the Hexacopter received some comments again in the latest
> ARRL Contest update.  It and its sister products are amazing bits of
> technology, and although a bit pricey it occurred to me during a rather
> fanciful mood that they might make an interesting DXpedition tool.  The
> propellers on these copters are driven by electric motors, have
> considerable lifting force, and the "fully loaded" versions come with
> GPS capability.
> Check out this video ...  http://www.youtube.com/watch?v=fyYujjP5J-k
> All of that suggests to me that it might be possible to hoist a wire for
> a full size 160m vertical with one of them, including power to keep them
> aloft more or less indefinitely.  The control circuitry is self
> correcting with quick response ... just tell it to remain at a certain
> location and it will do so in spite of variable winds or reasonable
> velocity.  It would probably take a bit of thought to keep high RF
> voltage away from the Hexacopter, and also some decoupling of the power
> leads, but ....
> Maybe somebody could buy one and rent it out.  ;)
> 73,
> Dave   AB7E
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