Radio Amateur’s Sub-9 kHz VLF Signal Detected Across the Atlantic

How low can you go? A signal on 8.971 kHz has spanned the Atlantic, from North Carolina to the UK. Running on the order of 150 µW effective radiated power, very low frequency (VLF) experimenter Dex McIntyre, W4DEX, transmitted signals on June 2 and 3 that were detected by Paul Nicholson, an SWL in the UK. Earlier this year, Nicholson detected McIntyre's WH2XBA/4 Experimental Service VLF signal on 29.501 kHz. McIntyre needed no FCC license to transmit on 8.971 kHz, since the Commission has not designated any allocations below 9 kHz — dubbed “the Dreamers’ Band.” 

 Un segnale su 8,971 kHz ha attraversato l'Atlantico, da North Carolina nel Regno Unito.

http://www.arrl.org/news/view/radio-amateur-s-sub-9-khz-vlf-signal-detected-across-the-atlantic