HF and UHF/SHF events this weekend

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Robert Rennard

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Aug 15, 2025, 5:51:37 PMAug 15

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The NOAA SWPC forecast for this weekend is: SFI of 150, A index of 5 and K index of 2. I hope conditions are better than they were during the week.

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NAQP SSB runs from 1800Z Saturday until 0559Z Sunday. Single op classes are allowed 10 hours on the air, LP M/2 class is allowed all 12. NA exchange is name and state/province, non-NA use name only. Power is either LP or QRP. Multipliers include KH6, KH7, US states, Canadian provinces and other countries in NA.

The SARTG WW RTTY contest has 3 sessions: 0000Z to 0800Z on Saturday and 1600Z to 2359Z on Sunday. There are LP and HP classes, but no QRP class. The exchange is RST with serial number. There are SO all band and single band classes, and multi-single (presumably HP).

The ARRL EME contest on 2.3 GHz and higher frequencies begins at 0000Z Saturday and continues for 48 hours. The exchange is your 4-character grid square ID.

The Russian CW/SSB District Award Contest begins at 0800Z Saturday and ends 24 hours later. Russians will send RS(T) and district code. Others will send RS(T) and serial number.

The ARRL 10GHz and up contest allows any mode. The exchange is your 6-character Maidenhead ID. This event starts at 0900Z Saturday and ends at 0759Z MONDAY.

The Keyman’s Club of Japan Contest begins at 1200Z Saturday and ends 12 hours later. JA stations will send RST and prefecture/district code. The ROTW sends RST and CQ Zone number.

The Brazilian military school of communications (CVA) CW DX contest begins at 1800Z Saturday and ends 27 hours later. Brazilians will send RST and state, non-Brazil stations will send RST and continent, and military participants will send RST and “MIL”.

The FISTS Sunday CW sprint starts at 0000Z Sunday and ends at the end of the day.

The ARRL RTTY Rookie Roundup runs from 1800Z Sunday to the end of the day. The exchange is name, last 2 digits of the first year licensed, and state/province/DX.

The QRP Run for the Bacon starts at 2300Z Sunday and ends 2 hours later. The exchange is RST, state/province/country and member number or output power.

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Thanks to the WA7BNM Contest Calendar the abbreviated descriptions you see here. A few of the lesser events have been omitted. Follow the links at ContestCalendar.com to the sponsors’ rules to get the complete and current details.