New VLF DX record - 12.1km on 8.97kHz

Marcus DF6NM has been able to receive his test transmissions on 8.97kHz at a distance of 12.1km, currently a record.

The ERP was about 1.3uW using a relatively small antenna with 1.4 Henry loading coil.

The transmitter was a 35W car-radio audio amplifier and the receiver used a 6m long antenna with the SpecLab software.

See the picture of the signal at
http://www.mydarc.de/df6nm/vlf/vlf_12km.jpg

SpecLab download
http://www.speclab.be/download.html

Amateur Radio below 10kHz
http://homepage.ntlworld.com/lapthorn/earthmode.htm

DF6NM - LF Amateur Radio
http://freenet-homepage.de/df6nm/

Ofcom NoV's for Amateur Radio operation below 9 kHz
http://www.southgatearc.org/news/february2010/
9khz_nov.htm