VLF receiver with 1.2 KM copper wire (0.4mm) coil:
http://www.vlf.it/minimal/minimal.htm
High Frequency (100 MHz-2.4GHz) receiver based on Analog Devices AD8313:
http://f6bon.albert.free.fr/Milliwattmetre.html
Techlib VLF receiver (1m telescopic antenna):
http://www.techlib.com/electronics/VLFwhistle.htm
McGreevy BBB-4 receiver (1m telescopic antenna):
http://www.auroralchorus.com/bbb4rx3.htm
ELF receiver with copper wire coil as above:
VLF with coil: http://plot.bek.no/~crash2005/beach03.ogg
HF sniffer: http://plot.bek.no/~crash2005/beach04.ogg
Techlib: http://plot.bek.no/~crash2005/beach05.ogg
McGreevy: http://plot.bek.no/~crash2005/beach06.ogg
ELF and coil (x160 speeded up): http://plot.bek.no/~crash2005/beach_elf_fast.ogg
McGreevy: http://plot.bek.no/~crash2005/kz13.ogg
Techlib (ground problems): http://plot.bek.no/~crash2005/kz14.ogg
HF (minidisk): http://plot.bek.no/~crash2005/kz17.ogg
VLF: http://plot.bek.no/~crash2005/kz01.ogg
see also: http://www.peenemuende.de/hti/fileadmin/user_upload/Denkmal-Landschaft.jpg
New headphones
Shielding for minidisk essential as we do get signals here
Magnet also to test ELF receiver response