Re: LF: DL-SWL

[Vincent DL6II <info@vsas.de>]

Hello Hartmut,

I've build up the antenna like this one 
http://jpmere.online.fr/L_F/Les%20LF.htm yesterday. But the signal 
levels have been mutch lower then the levels of my T-antenna.
I suppose the matching is not too good so far. Can you describe your 
transformer in detail please? What kind of ferrite and how many windings 
are you using for LF/MF?

73 de Vinny


Am 05.01.2016 00:10, schrieb Hartmut Wolff:
> Am 2016-01-04 um 19:44 schrieb Vincent Stallbaum:
> > @Hartmut are you using the original dimensions like
> > http://www.pa1a.com/PA1A/Antennas/k9ay/K9AY_Loop_re.jpg  ? Or is your
> > loop ab bit bigger?
> Vincent,
>
>  my antenna is looking like this:
>
> http://jpmere.online.fr/L_F/Les%20LF.htm
>
> because it was designed for 74kHz and 137kHz.
>
> If you listening only on 630m adding a few meters wire to the original 
> design may be enough. Important is you are hearing external noise and 
> not the noise floor of the receiver.
> The antenna is only working with length of wire up to lambda/4. Which 
> is important if you would like to use the antenna on 160m and 80m too. 
> A tuned transmitting antenna close to the loop may destroy the pattern 
> of the loop.
> 73
> Hartmut