Subj : 2 The ARRL Letter for March 8, 2018 To : all From : mark lewis Date : Fri Mar 09 2018 16:58:12 Predicted planetary A index is 5, 8, 12, and 10 on March 8-11; 5 on March 12-15; 12, 15, and 18 on March 16-18; 5 on March 19-20; 12, 18, 10, 5, 8, and 20 on March 21-26; 5 on March 27-29; 8 on March 30-31; 5 on April 1-3; 8 on April 4-5; 5 on April 6-9; 10, 12, 12, 15, and 18 on April 10-14; 5 on April 15-16, and 12, 18, 10, 8, and 5 on April 17-21. Sunspot numbers for March 1 through 7, 2018 were 0, 11, 0, 0, 0, 0, and 0, with a mean of 1.6. The 10.7-centimeter flux was 67.2, 67.8, 67.8, 67.5, 67.6, 67.6, and 67.8, with a mean of 67.6. Estimated planetary A indices were 6, 4, 6, 6, 5, 5, and 4, with a mean of 5.1. Estimated mid-latitude A indices were 5, 3, 5, 7, 5, 4, and 3, with a mean of 4.6. Send me your reports or observations. ____________________________________________________________________________ Just Ahead in Radiosport * March 10 -- QRP ARCI Spring Thaw SSB Sprint * March 10 -- AGCW QRP Contest (CW) * March 10-11 -- RSGB Commonwealth Contest (CW) * March 10-11 -- SARL VHF/UHF Analogue/Digital Contest * March 10-11 -- F9AA Cup, SSB * March 10-11 -- South America 10-Meter Contest (CW, phone) * March 10-11 -- SKCC Weekend Sprintathon (CW) * March 10-11 -- Stew Perry Topband Challenge * March 10-11 -- Oklahoma QSO Party (CW, phone, digital) * March 10-11 -- EA PSK63 Contest Dig RSQ * March 10-11 -- Tesla Memorial HF CW Contest * March 10-11 -- QCWA QSO Party (CW, phone, digital) * March 10-11 -- Idaho QSO Party (CW, phone, digital) * March 11 -- North American Sprint, RTTY * March 11 -- UBA Spring Contest, 2 Meters (CW, phone) * March 11 -- WAB 3.5 MHz Phone * March 11 -- Wisconsin QSO Party (CW, phone, digital) * March 12 -- 4 States QRP Group Second Sunday Sprint (CW, phone) * March 13 -- CLARA Chatter Party (CW, phone) * March 14 -- RSGB 80-Meter Club Championship, CW See the ARRL Contest Calendar for more information. 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