LF:
https://sites.google.com/site/g3xbmqrp/Home/136k
http://digilander.libero.it/iz2day/IT/137KHZ.html
http://www.strobbe.eu/on7yd/136ant/
http://www.w1vd.com/XNStxantenna.html
http://members.shaw.ca/ve7sl/2200mstn.html
VLF:
duże anteny ... oj tam oj tam :-)
http://upload.wikimedia.org/wikipedia/commons/e/ee/Cutlervlf2.jpg
https://sites.google.com/site/g3xbmqrp/Home/136k
http://digilander.libero.it/iz2day/IT/137KHZ.html
http://www.strobbe.eu/on7yd/136ant/
http://www.w1vd.com/XNStxantenna.html
http://members.shaw.ca/ve7sl/2200mstn.html
VLF:
duże anteny ... oj tam oj tam :-)
http://upload.wikimedia.org/wikipedia/commons/e/ee/Cutlervlf2.jpg