ad7i@houxp.UUCP (Paul Newland) (10/25/83)
qst de ad7i hr propagation forecast bulletin nr 43 from arrl headquarters newington ct october 24, 1983 to all ra io amateurs bt the two sunspot groups mentioned in last weeks bulletin have gone around the west limb. their activity was fallin off, and there have been no new significant areas to replace them. after a high of 140 on october 18, the solar flux fell quickly to 88 on the 22. this was the lowest flux value reading in nearly 6 years. despite marked lower solar activity, propagation was generally good on 28 mhz last week, especially october 19 through 21. this was mainly because the sun was entering its most favorable position of the year for hf propagation in the northern hemisphere. there were traces of new east west activity october 23. the solar flux rose only one point, but the trend should be toward higher readings through early november. if there are no major flares, and the flux rise is gradual, some of the best dx conditions of the autumn will be enjoyed november 4 to 9. disturbances for low levels and severe fading in the past two days should clear by october 5 and propagation should peak october 27 to 29. disturbances and high latitude propagation are likely again october 30 through november 3 before the longer period of generally good conditions begins about november 4. american sunspot numbers for october 13 through 19 were between 39 and 85 for a mean of 58.9 ar