SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Esperance Perth Date: 27 July, 2024 T-index: 130 Bearings: 289 112 Distance: 602 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 38-44 1E 15 1 5 10 15 20 25 30 35 40 2F 58-63 2E 30 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 9.3 6.5 3.4 AMMMMMF% . 7.8 3.9 2.7 00 01 10.8 7.8 3.9 XMMMMMM %%. 9.1 4.7 3.2 01 02 11.5 8.5 4.2 SXMMMMM F%.. 9.8 5.2 3.4 02 03 11.7 8.9 4.4 AXMMMMM M%.. 10.1 5.5 3.5 03 04 11.7 9.0 4.5 AXMMMMM M%.. 10.1 5.5 3.6 04 05 11.7 8.9 4.4 AXMMMMM M%. 10.1 5.4 3.5 05 06 11.5 8.6 4.3 SXMMMMM M%.. 10.0 5.2 3.4 06 07 11.3 7.9 4.0 XMMMMMM M%.. 9.8 4.8 3.2 07 08 11.2 6.7 3.5 AMMMMMMM M%.. 9.7 4.0 2.8 08 09 10.1 4.0 2.2 AMMMMMMMF %. 8.6 0.0 2.0 09 10 8.7 1.4 0.0 MMMMMMMM%. . 7.5 0.8 0.0 10 11 7.0 1.4 0.0 MMMMMMM%. 6.1 0.8 0.0 11 12 5.9 1.4 0.0 MMMMMM. 5.2 0.8 0.0 12 13 5.2 1.4 0.0 MMMMM. 4.7 0.8 0.0 13 14 4.5 1.4 0.0 MMMM%. 4.1 0.8 0.0 14 15 4.3 1.4 0.0 MMMM%. 4.0 0.8 0.0 15 16 4.2 1.4 0.0 MMMM%. 3.9 0.8 0.0 16 17 4.1 1.4 0.0 MMMM.. 3.9 0.8 0.0 17 18 3.9 1.4 0.0 MMMM.. 3.7 0.8 0.0 18 19 3.6 1.4 0.0 MMMM.. 3.4 0.8 0.0 19 20 3.6 1.4 0.0 MMMM.. 3.4 0.8 0.0 20 21 3.5 1.4 0.0 MMMM.. 3.3 0.8 0.0 21 22 3.8 1.4 0.0 MMMM. 3.5 0.8 0.0 22 23 6.6 2.6 1.5 MMMMM%. 5.7 0.0 1.6 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) 27-Jul-2024 BoM Space Weather Services, Sydney Australia +61-2-9213-8000