From: "Mike Dennison" <mike.dennison@ntlworld.com>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 25 Apr 2016 10:46:23 +0100
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Message-ID: <571DE76F.12057.2FA5E0@mike.dennison.ntlworld.com>
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References: <ef8448dfc5164e75978ffb782fc5925f@kabelmail.de>, <571D3DF4.6050109@abelian.org>, <571D45FE.9080408@posteo.de>
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Subject: Re: VLF: Kites
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Status: O

I used a cheap kite for LF tests as GW3XDV/P several years ago. The 
first time was a success - 136kHz CW contact with SM. The next time - 
an attempt to make the first (and only) GW-GI QSO on 73kHz - was a 
failure because the wind was too low, even beside the sea and when I 
relocated to a mountain top..

To reduce the weight, I used thin wire twisted round the strong kite 
string. A problem was cause by high voltages close to the ground when 
the kite dipped, so I would recommend using a small mast (8m of 
fibreglass?) at the bottom end of the antenna wire. 

Good luck.

Mike, G3XDV
===========

> With a 'power sled 36' i run LF transmissions in France. The kite was
> up in the air for > 24 hours without a break. I even went to bed
> (tent) while it stayed up :-) But of course it depends on the wind
> stability. That kite can carry 300m of wire , you know. There is a
> smaller version called 'power sled 24' which is maybe even a better
> choice when the wind is strong and the string is short.
> 
> Looking forward to your first transmissions.
> 
> 73, Stefan
> 
> PS: A kite CW QSO on LF, that would be fine!
> 
> Am 24.04.2016 23:43, schrieb Paul Nicholson:
> >
> > Here I am limited to 60m unless I notify the aviation
> > authority (which I don't want to do), so I thought about
> > using 2 or even 3 kites in a row each at 60m, spaced maybe
> > 100m or so.
> >
> > Trying this cheap and simple single line parafoil
> >
> >  https://www.amazon.co.uk/gp/product/B00LZWGKMY
> >
> > It says "stable and accurate flight".  Well my experience is
> > different!   I think the winds are a bit too strong and it
> > quickly becomes unstable.   Next experiment will add two tails.
> >
> > I've got to give this cheap kite a good try, because the next
> > size up is Ł50.   It seems to have plenty of pull, enough to
> > lift a thin wire, just need to make it stable...
> >
> > If I can get something to stay up for more than a few minutes,
> > I might try some LF transmission.  That could be entertaining.
> >
> > -- 
> > Paul Nicholson
> > -- 
> >
> >
> >
> >
> 
> 
> 
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