HamSphere 4.0 Contest Calendar
NameLate Night DX Summer 24 Hour SSB Contest 2021
DescriptionWe proudly present the Late Night DX Summer 24 Hour SSB Contest 2021
It is very similar to the famous CQ WW WPX contest on real HAM radio except over 24 Hours. You need to work as many prefixes (for example UR5, 5B4, F8, 14HS1, 19WO1, 43HS0 etc) as possible.

1st place - 100 HS Credits
2nd place - 80 HS Credits
3rd place - 50 HS Credits
4th place - 30 HS Credits
5th place - 20 HS Credits
6th place - 10 HS Credits
Bands160, 80, 60, 40, 30, 20, 17, 15, 12, 11 and 10m
RulesYou can work all stations. Repeated QSOs with the same operator are valid on every new band. Multipliers are every unique prefixes of worked stations (UR5, 5B4, 14HS1, 19WO1, 43HS0 etc) and every new country and territory according to DXHS list.
Every multiplier is valid only one time during the contest. So if you worked for example 5B4AIT on 15 m, you can work with him on others bands, but multiplier 5B4 for 5B4AIT will be counting only once during the contest. Also you will receive 1 multiplier for Cyprus. So QSO with 5B4AIT will bring you 1 multiplier for prefix and 1 multiplier for country, totally 2 points for multipliers.
All contest contacts MUST be above 35kHz from the bottom of each band (example: 7.035 and up, 14.235 and up, 21.335 and up). Any contest contact made below the 35kHz contest band edge will not count.
Note that only confirmed QSOs will be valid. Do not forget about 15 minutes rule. 15 minutes must have passed before you can contact the same op on a different band.
Score CalculationTotal points for QSOs multiply by (Total numbers of worked prefixes +Total numbers of worked DXHSs)
Max Power100W (1kW on 160m only)
ExchangeRS + Serial number (starting from 001)
QSO Points1 point per QSO (0-1500 km)
2 points per QSO (1500 km-3500 km)
3 points per QSO (3500 km-7500 km)
4 points per QSO (7500 km-15000 km)
5 points per QSO (15000+ km)
Extra infoMultipliers are every new callsign’s prefix ONE TIME during the contest and every new worked country and territory according to DXHS list ONE TIME during the contest.
Start date UTC2021-07-31 07:00
End date UTC2021-08-01 07:00
Log deadline UTC2021-08-04 00:00