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1. ULF: A short summer experiment on the 191 km band (score: 1): Author: DK7FC <[email protected]>; Date: Sat, 02 Jun 2018 12:41:08 +0200; Hello dear friends of the Ultra Low Frequencies, I want to report about a short experiment i've done on thursday morning. Early in the morning i placed my RX loop antenna (0.8m diameter, 84 turns, pr; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-06/msg00001.html (11,494 bytes)
2. Re: ULF: A short summer experiment on the 191 km band (score: 1): Author: DK7FC <[email protected]>; Date: Tue, 05 Jun 2018 00:46:50 +0200; ...and here are some more images, showing spectrograms from the 2 hour long carrier transmission. A spectrogram is more common in the LF world maybe. Amazing, the carrier reaches 25 dB in 424 uHz. Ev; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-06/msg00011.html (12,943 bytes)
3. RE: ULF: A short summer experiment on the 191 km band (score: 1): Author: <[email protected]>; Date: Tue, 5 Jun 2018 12:44:24 -0400; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-06/msg00015.html (17,163 bytes)
4. Re: ULF: A short summer experiment on the 191 km band (score: 1): Author: DK7FC <[email protected]>; Date: Fri, 08 Jun 2018 09:34:39 +0200; Hello Jim, The higher noise in the H field is QRM rather than QRN, i.e. mains harmonics. I could show a splitted spectrogram showing E and H separately. But the main reason for the lower SNR is certa; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-06/msg00022.html (19,390 bytes)

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