VLF Transmissions on “8.97, 6.47 and 5.17KHz” by Stefan, DK7FC

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Stefan, DK7FC did a couple of amazing transmissions on 8.97KHz, 6.47KHz and 5.17KHz!

Much more details documented from Stefan on qrz.com - please go to ww.qrz.com and search for DK7FC.

On 23.Oct. 2010 i received Stefan’s signal */- 8970KHz in DFCW600. He was transmitting 1st a long carrier and then 2 characters “GM”. I used a Miniwhip antenna direct into the soundcard with SpectrumLab - QRB 53Km.

20-25dB S/N

23.Okt.2010 - DK7FC on 6.47KHz in DFCW600. Stefan sent a long carrier and then a “K”

12-15db S/N

on 04.Dec. 2010 - DK7FC on 5.17KHz with ~15dB S/N