Hi, Bill,
Go to http://www.fcc.gov and search for “experimental.” Strongly suggest
reading Part 5 of the FCC rules first. (See:
http://www.gpo.gov/fdsys/browse/collectionCfr.action?collectionCode=CFRsearchPath=Title+5oldPath=Title+5isCollapsed=falseselectedYearFrom=2013ycord=161.
You may
FYI: All US operators using 472-510 KHz (so
called 600 meter band) are operating with
experimental licenses. Several countries have
already approve ham radio for parts of this
band. WRC-2012 approved this use, but each
country has to initiate ham radio service for
their nationals to use