23.4. - 24.4. 1200-1200z SP DX RTTY Contest
http://www.pkrvg.org/zbior.html
23.4. - 24.4. 1300-1259z Helvetia Contest
http://www.uska.ch/fileadmin/download/C ... h_2010.pdf
23.4. - 24.4. 1700-1700z South Dakota QSO Party
http://www.w0zwy.org/index.php?option=c ... &Itemid=30
23.4. - 24.4. 1500-0300z QRP To the Field
http://www.zianet.com/qrp/QRPTTF/ttf.html
23.4. - 24.4. 0001-2359z 10-10 Int. Spring Contest, Digital
http://www.ten-ten.org/Forms/QSOPartyRules_082710.pdf
Kristjan, S50XX