Re: LF: RE: earth antenna test

[Dimitrios Tsifakis <dtsifakis@gmail.com>]

Hi Rik,

I will try an unterminated dipole next. The weather has been really
hot in the past few weeks here and the ground is probably drier than
usual. My block of land is a bit hilly, so in fact it will be an
inverted-V dipole rather than a traditional one. This will be
interesting for sure.


73, Dimitris VK1SV

2013/1/23 Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>:
> Hello Dimitris,
>
> very interesting, in particular the comparison between the terminated and 
> unterminated wires.
> The fact that an unterminated wire works brings up another experiment: how 
> would a dipole placed on the ground perform?
> On 475kHz a half wave length would be 316m (2x158m), the physical length 
> probably 300m or less.
>
> 73, Rik  ON7YD - OR7T
>
> ________________________________________
> Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] 
> namens Dimitrios Tsifakis [dtsifakis@gmail.com]
> Verzonden: woensdag 23 januari 2013 5:42
> To: rsgb_lf_group@blacksheep.org
> Onderwerp: LF: earth antenna test
>
> Hello group,
>
> here is a quick test I did on 475 kHz, using some wires laying on the
> ground. I was really impressed by the signal strength but capturing
> the signal from my AA-30 antenna analyser surely takes the cake :-)
>
> http://people.physics.anu.edu.au/~dxt103/136/earth/6/
>
> Happy to hear your comments on this test.
>
> 73, Dimitris VK1SV