What frequency are you discussing ?
g3kev
----- Original Message -----
From: "Gerhard Hickl" <[email protected]>
To: <[email protected]>
Sent: Friday, November 12, 2010 9:17 PM
Subject: Re: LF: LF Coils
> Hi Ken!
>
> It all depends on the antenna your are going to feed with this loading
> coil. My system has a capacitive load of abt. 600pf and so the coil is
> abt. 2,3mH. This is realized on a flower pot with about 40cm diameter,
> 80 turns of insulated wire. The height of the pot is only 30cm.
>
> If you have a smaller capacitive load, you'll need more inductance and
> thus increasing the diameter of the coil-body.
>
> If you count 6pf per meter for every vertical part of your antenna and
> 5pf/m for every horizontal part, you can estimate the capacitive load
> very well. For calculation of L and C for a given frequency or for
> dimensioning air-coils (Luftspulen), I can recommend the
> "Mini-Ringkernrechner"...
>
> http://www.dl5swb.de/html/mini_ringkern-rechner.htm
>
> I don't remember if there's an option for the language on installation
> but even if it's only in German, it easy to operate.
>
> 73
>
> OE3GHB
> Gerhard
>
>
>
>
>
> Am Donnerstag, den 11.11.2010, 20:28 +0000 schrieb Ken:
> > Hello Everyone.
> > I went into a branch of Wilkinsons (Watford), today, and saw some
> > straight sided cylindrical dust bins about 0.5m diameter, useful for
> > large coils?
> >
> > 73
> > Ken
> > M0KHW IO91TV
>
>
>
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