SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Carnarvon Perth Date: 22 October, 2024 T-index: 140 Bearings: 165 344 Distance: 815 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 30-42 1E 10 1 5 10 15 20 25 30 35 40 2F 50-61 2E 22 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 11.3 10.0 5.2 ASMMMMM F%.. 9.0 5.9 3.5 00 01 11.7 11.1 5.6 ASXMMMM B%%.. 9.4 6.6 3.8 01 02 12.0 11.8 6.0 ASXMMMM M%%.. 9.8 7.0 4.0 02 03 12.4 12.3 6.1 SSXMMM MB%%.. 10.2 7.2 4.2 03 04 12.7 12.5 6.2 SSXMMM MM%%.. 10.5 7.4 4.2 04 05 12.9 12.4 6.2 SSXMMM MM%%.. 10.7 7.3 4.2 05 06 12.8 12.2 6.1 SSXMMM MM%%.. 10.6 7.2 4.1 06 07 12.3 11.6 5.9 ASXMMMM MF%%.. 10.2 6.8 4.0 07 08 12.0 10.8 5.5 ASXMMMM M%%.. 9.9 6.3 3.8 08 09 12.0 9.5 5.0 SXMMMMM M%%.. 9.8 5.6 3.4 09 10 11.9 7.4 4.0 AXMMMMMM F%%.. 9.6 4.3 2.7 10 11 11.3 1.7 0.0 MMMMMMMMMM F%.. 9.1 1.0 0.0 11 12 10.5 1.7 0.0 MMMMMMMMMF %.. 8.6 1.0 0.0 12 13 9.8 1.7 0.0 MMMMMMMMM% %. 8.0 1.0 0.0 13 14 9.0 1.7 0.0 MMMMMMMM%% .. 7.3 1.0 0.0 14 15 8.3 1.7 0.0 MMMMMMMM%% .. 6.8 1.0 0.0 15 16 7.8 1.7 0.0 MMMMMMM%%. .. 6.4 1.0 0.0 16 17 7.5 1.7 0.0 MMMMMMM%%. . 6.2 1.0 0.0 17 18 7.1 1.7 0.0 MMMMMMM%.. 5.9 1.0 0.0 18 19 6.5 1.7 0.0 MMMMMM%.. 5.5 1.0 0.0 19 20 6.1 1.7 0.0 MMMMMM%. 5.3 1.0 0.0 20 21 6.3 1.7 0.0 MMMMMM%.. 5.4 1.0 0.0 21 22 7.9 3.2 2.0 AMMMMM%%. 6.6 0.0 1.7 22 23 10.2 8.2 4.4 ASMMMMMF %.. 8.0 4.8 3.0 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