Underground Dipole - the COLLAPSE of my ideas of Ham Antennas

Help me to understand. I planned this test as a joke, but it turned out serious. Successful QSOs on an antenna that is invisible and buried in the sand!! And this - on the day with bad propagation because of magnetic storm. To get an SWR 1.4 on MHz I had to shorten the antenna in half! And it worked still well even with DX Stations from Siberia. Dear hams, how is this possible? -- To watch more recent videos: If you would like to help me in the creation of Ham content please consider joining my small Patreon community : Or YouTube Support community : My personal webpage: My other social media with Ham content: 73&88 and see you On the Air! YL Raisa #r1big #hamradio #oh7bg