Direction Technology Inc. RDF FAQ - a bit of explanation about single and multi
channel Watson Watt
http://www.directionfinder.com/rdffaq2.htm
RDF Products (formerly "RF products") (makers of antennas and related stuff) -http://www.rdfproducts.com/ is the corporate site. http://www.rdfproducts.com/wn002_apl_01.pdf is a great app note describing all the stuff
Rhode & Schwartz (I'd give a link but they have one of those horrible dynamic frameset pages, and it's impossible to link to it in a way that will actually work) http://www.rhode-scwartz.com
radio/df.htm - 12 Jan 2003 - Jim Lux
(antennas) (radio home page)
(Jim's home page)