ARLA/CLUSTER: Batidos anteriores recordes amadores em 8,97 kHz.

[João Gonçalves Costa]

[http://www.aa5tb.com/img_8310.jpg][http://www.mydarc.de/df6nm/vlf/vlf_12km.jpg][http://on2bbp.byze.be/projects/images/vlf_loop_image9.jpg]
New 8.97kHz Amateur Radio DX record

On Monday, March 15 Stefan Schaefer DK7FC achieved an Amateur Radio world record on 8.97 kHz.

Stefan Schaefer DK7FC, running just 1.7 milliwatts ERP on 8.97 kHz, was received by Paul Nicholson in the UK over a distance of 830km. Markus DF6NM 180km away also received the signals.

Stefan was running 250 watts into a 100m vertical wire kite antenna which gave the 1.7 mW ERP. Practical antennas are very inefficient at these very low frequencies.

Further information on this remarkable achievement can be seen at
http://www.qrz.com/db/DK7FC
and
http://g3xbm-qrp.blogspot.com/2010/03/more-on-897khz-dx-yesterday.html

>From a week ago - New VLF DX record - 12.1km on 8.97kHz
http://southgatearc.org/news/march2010/new_vlf_record.htm

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

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

Radio Waves Below 22 kHz
http://www.vlf.it/

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