Contest Calendar ARRL
Contest Calendar ARRL
http://www.arrl.org/contests/
ARRL Int. DX Contest
ARRL Int. DX Contest
http://www.sk3bg.se/contest/arrlidx.htm
Contest Calendar SM3CER
This is sm3cer contest service - a web site for amateur radio contesters with a complete worldwide contest calendar, contest rules, contest results, contest software and much more...
http://www.sk3bg.se/contest/index.htm
Contestgroep PI4ZI
Contestgroep PI4ZI
http://www.pi4zi.nl/
Free Contest Logger
Free Contest Logger
http://www.n1mm.com/
Kontest.de
Konteste im amateurfunk
http://www.kontest.de/