Re: LF: Ant current

["Alan Melia" <alan.melia@btinternet.com>]

Why?
I think its possible that frozen ground increases the efficincy of a given 
system, but that same antenna conguration would probably work even better 
still over salt water??
Alan
G3NYK
----- Original Message ----- 
From: "C. Groeger" <aot.aot@gmx.de>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, February 01, 2014 3:18 PM
Subject: Re: LF: Ant current


> Thanks for quick reply, Wolf!
>
> But then propagation from a mf tx on a ship on sea should be worse then 
> from land?
> Christian Groeger
>
> wolf_dl4yhf <dl4yhf@freenet.de> schrieb:
>
> > Hi Chris,
> >
> > By coincidence, I just had to re-adjust the antenna for exactly that 
> > reason:
> > The conductivity of water is better, but the 'tangens delta' (loss
> > factor) of water as dielectric is much worse than that of ice.
> > So the water "robs" energy in presence of an E-field, which the ice does
> > not.
> > Thus the losses around the antenna go up. Depends a lot of the greenery
> > around the antenna.
> >
> > Cheers,
> >   Wolf DL4YHF .
> >
> > Am 01.02.2014 15:51, schrieb C. Groeger:
> > > Hi all
> > > How can one explain that ant current rises when soil is frozen?
> > >
> > > Conductivity of water should be much higher than that of ice.
> > >
> > > So earth resistance would be higher and the current should drop when 
> > > soil is frozen...
> > > 73, df5qg
> > >
> > >
> > > Christian Groeger