Increased activity of V818 Sco = Sco X-1 V818 Sco = Sco X-1 is reported to undergo violent brightness changes recently. Observations: YYMMDD(UT) mag observer 980820.710 120 (B. Monard) 980821.699 119 (B. Monard) 980822.710 128 (B. Monard) 980823.719 132 (B. Monard) 980825.725 120 (B. Monard) 980825.810 121 (B. Monard) 980826.710 123 (B. Monard) 980827.710 120 (B. Monard) 980829.719 128 (B. Monard) 980830.719 132 (B. Monard) 980901.710 121 (B. Monard)