SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Esperance Perth Date: 22 October, 2024 T-index: 140 Bearings: 289 112 Distance: 602 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 39-51 1E 15 1 5 10 15 20 25 30 35 40 2F 59-68 2E 30 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 9.5 8.3 4.3 AMMMMM% .. 8.5 5.0 3.5 00 01 10.0 9.1 4.6 AXMMMMM %. 8.9 5.5 3.7 01 02 10.4 9.6 4.9 AXMMMMM %.. 9.3 5.9 3.9 02 03 11.0 9.9 5.0 AXXMMMM M%.. 9.8 6.1 4.0 03 04 11.2 10.0 5.0 AXXMMMM M%.. 10.0 6.1 4.0 04 05 11.3 9.9 5.0 AXXMMMM M%.. 10.0 6.1 4.0 05 06 11.2 9.7 4.9 AXMMMMM M%.. 9.9 5.9 3.9 06 07 10.6 9.2 4.7 AXMMMMM %%. 9.4 5.6 3.8 07 08 10.5 8.5 4.4 AXMMMMM %%. 9.3 5.1 3.5 08 09 10.3 7.3 3.9 XMMMMMM %.. 9.1 4.4 3.1 09 10 10.2 5.4 3.0 AMMMMMMM %.. 8.9 3.1 2.5 10 11 9.6 1.4 0.0 MMMMMMMMM% .. 8.5 0.8 0.0 11 12 9.0 1.4 0.0 MMMMMMMMM% . 8.0 0.8 0.0 12 13 8.2 1.4 0.0 MMMMMMMM%. 7.3 0.8 0.0 13 14 7.4 1.4 0.0 MMMMMMM%.. 6.7 0.8 0.0 14 15 6.9 1.4 0.0 MMMMMMM%.. 6.3 0.8 0.0 15 16 6.5 1.4 0.0 MMMMMMM.. 5.9 0.8 0.0 16 17 6.2 1.4 0.0 MMMMMM%.. 5.6 0.8 0.0 17 18 5.9 1.4 0.0 MMMMMM%. 5.4 0.8 0.0 18 19 5.6 1.4 0.0 MMMMMM. 5.2 0.8 0.0 19 20 5.4 1.4 0.0 MMMMMM. 5.0 0.8 0.0 20 21 5.5 1.4 0.0 MMMMMM. 5.1 0.8 0.0 21 22 7.3 4.9 2.7 MMMMM%. 6.4 2.7 2.3 22 23 8.7 7.1 3.8 XMMMM%. . 7.6 4.3 3.1 23 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT =============================================================================== |. USABLE LESS THAN 50% OF DAYS |% USABLE 50% TO 90% OF DAYS | |B BOTH E and F MODES 90% OF DAYS |M MIXED FIRST AND SECOND F MODES | |F FIRST F MODE ONLY |E E-LAYER PROPAGATION |P 90% E and 50-90% F | |S SECOND MODES ONLY |A HIGH ABSORPTION |X COMPLEX MODES | (c) 22-Oct-2024 BoM Space Weather Services, Sydney Australia +61-2-9213-8000