>> (Unfortunately the directivity of that earth antenna is almost orthogonal to the RX sites of Paul, DL0AO and DK7FC :-/

No, an earth antenna radiates in the direction of the wire, approximately east-west...

73, Markus

-----Ursprüngliche Mitteilung-----
Von: DK7FC <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mi, 24. Jan 2018 19:27
Betreff: Re: LF: RE: 136kHz WSPR experiment

Am 24.01.2018 15:00, schrieb Roger Lapthorn:
> To get best results I think you need LOW conductivity around the
> earth-electrode "antenna", so the signal spread (and hence effective
> loop area) is greatest. Placing near a river is likely to give poor
> results in my experience.
I agree.

Best would be a stony mountain sourrounded by a small lake rivulet. For
example like here:
http://k7fry.com/grid/?qth=JN49AK54QN&from=JN49AK64OK !!!!
(Unfortunately the directivity of that earth antenna is almost
orthogonal to the RX sites of Paul, DL0AO and DK7FC :-/
Ah and BTW it would be good to have a good Restaurant near that
location, just to spend a few hours there while transmitting.
Sharing some of my thoughts... :-)

73, Stefan