24.4. - 25.4. 0001-2359z 10-10 Int. Spring Contest, CW
http://www.ten-ten.org/Forms/QSOPartyRulesRevised.pdf
24.4. - 25.4. 1200-1200z SP DX RTTY Contest
http://www.pkrvg.org/zbior.html
24.4. - 25.4. 1300-1259z Helvetia Contest
http://www.uska.ch/typo/fileadmin/downl ... h_2010.pdf
24.4. - 25.4. 1500-0300z QRP to the Field
http://www.zianet.com/qrp/QRPTTF/ttf.html
24.4. - 25.4. 1600-0159z Florida QSO Party
25.4. 1200-2159z Florida QSO Party
http://www.floridaqsoparty.org/rules.html
24.4. - 25.4. 1700-1700z Nebraska QSO Party
http://www.hdxa.net/neqso/neqso.htm
24.4. - 25.4. 2300-2300z AWA John Rollins Memorial DX Contest
http://www.antiquewireless.org/pdf/rollinsrules2010.pdf
Kristjan, S50XX