Hello Roger,
Big earth electrode antenna allows transmitting on 136kHz with average results.
https://klubnl.pl/wpr/en/index.php/2018/01/09/most-na-wisle-elementem-anteny-czyli-eksperymentow-z-dipolami-ziemnymi-ciag-dalszy/#more-720
We are slowly getting ready for testing at 8.27kHz but for this test we needed 10km of wire…
73! Marcin SQ2BXI
From: [email protected] [mailto:[email protected]] On Behalf Of Roger Lapthorn
Sent: Wednesday, January 24, 2018 10:20 AM
To: [email protected]; [email protected]
Subject: LF: 136kHz WSPR experiment
A couple of Gs came on. G3XIZ (46km) was 2-3dB better S/N on the earth-electrodes than on the compromise vertical. He is end-on to the "loop" in the ground. G6AVK was not copied at all. He is orthogonal to the "loop" in the ground. I was quite surprised not to spot him at all though.
Conclusions? The earth-electrode "antenna" in the ground is quite effective at 136kHz, but more directional.
Next season I will definitely try an , E-field probe on RX!
No great DX, but experimentation!
73s
Roger G3XBM
