http://dxworld.com/dxnews.html Near bottom of page are technical sections on aerials and receivers.
www.radiointel.com Radio news, reviews, commentary from dedicated enthusiasts.
www.vlf.it/trond2/list.html Signals to seek; call signs and locations.
www.vlf.it Good general VLF site, packed with information and projects.
www.triax.com/vlfradio/natradio.htm The sounds of Nature on VLF.
www.boulder.nist.gov/timefreq/ Atomic standard time transmissions from USA.
www.dcf77.de/ German standard time transmissions.
www.lwca.org/ Longwave Club of America. For listeners and low frequency transmitting enthusiasts.
http://longwave.bei.t-online.de/ David Mills’ information on time and frequency services.
www.qsl.net/sv1xv/index.html The world below 535KHz, from Costas Krallis, SV1XV.
www-pw.physics.uiowa.edu/mcgreevy/ Stephen P. McGreevy on natural VLF radio. Includes receiver projects.
www.wunclub.com World Utility News.
http://wavelab.homestead.com Includes antenna projects.
http://home.t-online.de/home/Peter.Schmalkoke Loop antennas.
www.stormwise.com/inductors.htm Simple project for tuned-coupling a loop to a portable receiver.
http://groups.yahoo.com/group/VLF_Group Natural Radio VLF Group.
http://home.swipnet.se/~w-54761/lflinks.htm Links to LF sites.
www.pacificsites.com/~brooke/electron.shtml
www.eham.net/reviews/detail/2814 Sangean ATS-803A reviewed; much else of interest on this site.
www.dxing.com Even more of interest.
This site's loop antenna links on this page.