Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site mgweed.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!mgnetp!mgweed!rjr From: rjr@mgweed.UUCP (Bob Roehrig) Newsgroups: net.ham-radio Subject: arrl propagation forecast bulletin nr 48 Message-ID: <13818@mgweed.UUCP> Date: Mon, 26-Nov-84 20:45:17 EST Article-I.D.: mgweed.13818 Posted: Mon Nov 26 20:45:17 1984 Date-Received: Tue, 27-Nov-84 04:43:30 EST Organization: AT&T Consumer Products - Montgomery Illinois Lines: 29 qst de k9eui hr propagation forecast bulletin nr 48 from arrl headquarters newington ct november 26, 1984 to all radio amateurs bt after ten weeks at close to quiet sun levels, the solar flux started upward november 17. from 72 it rose to 85 by the 25th, and may continue upward another day or two. this rise came as geomagnetic activity was declining, making for some of the best propagation 0f the autumn dx season. improvement was most marked on 21 mhz. on 28 mhz, there was some propagation to africa from eastern usa, and north south conditions were good. geomagnetic activity will be rising after about the 27th, and propagation will be more variable through about december tenth. the major geomagnetic disturbance of mid november will recur, probably at lower levels about december 13 to 15. it is too early to tell if the new solar activity in recent days is more than a brief event. it could signal a critical period in which predictions based on the rotational period of the sun become unreliable. more on this later in subsequent bulletins. the updated table of ten meter beacon stations announced in bulletin number 46 is still available. send an sase to ed tilton, w1hdq, po box 137, canton, ct 06019 ar