voor de echte foxhunters !
http://www.silcom.com/~pelican2/
http://www.homingin.com/DSEfix.html
http://home.scarlet.be/~joep/doppler/dopp2005_home.htm
http://www.taiyomusen.co.jp/EHome/edf.html
http://www.servo.com/rfprds.htm
http://www.pauldos.com/enterprises/doppler.htm
http://www.dopsys.com/
http://cgi.ebay.com/Ramsey-DDF1-Doppler ... 0859a23682
http://byonics.com/dsp-rdf/
http://www.allspectrum.com/ramsey/DDF1/DDF1.pdf