SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Esperance Perth Date: 29 January, 2026 T-index: 125 Bearings: 289 112 Distance: 602 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 39-52 1E 15 1 5 10 15 20 25 30 35 40 2F 58-69 2E 30 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 7.3 8.4 4.3 AXMMP.. . 6.5 5.1 3.5 00 01 7.7 9.1 4.6 AXMMMP. .. 7.0 5.6 3.7 01 02 8.0 9.6 4.8 AXMMMP. .. 7.2 5.9 3.9 02 03 8.4 9.9 4.9 AXMMMM% .. 7.6 6.0 3.9 03 04 8.6 10.0 5.0 AXXMMMP .. 7.7 6.1 4.0 04 05 8.7 9.9 4.9 AXXMMM% ... 7.8 6.1 4.0 05 06 8.6 9.7 4.8 AXMMMM% .. 7.7 5.9 3.9 06 07 8.3 9.2 4.6 AXMMMM% .. 7.4 5.6 3.7 07 08 8.1 8.6 4.4 AXMMMM% .. 7.2 5.2 3.5 08 09 7.9 7.6 3.9 XMMMM%% . 6.9 4.6 3.2 09 10 8.0 6.0 3.3 AMMMMM%. . 7.0 3.6 2.7 10 11 7.9 1.4 0.0 MMMMMMMM%. . 7.0 0.8 0.0 11 12 7.7 1.4 0.0 MMMMMMMM%. 6.8 0.8 0.0 12 13 7.5 1.4 0.0 MMMMMMMM%. 6.7 0.8 0.0 13 14 6.9 1.4 0.0 MMMMMMM%. 6.3 0.8 0.0 14 15 6.6 1.4 0.0 MMMMMMM%. 6.0 0.8 0.0 15 16 6.4 1.4 0.0 MMMMMMM.. 5.8 0.8 0.0 16 17 6.0 1.4 0.0 MMMMMM%. 5.4 0.8 0.0 17 18 5.3 1.4 0.0 MMMMMM.. 4.8 0.8 0.0 18 19 4.7 1.4 0.0 MMMMM%. 4.4 0.8 0.0 19 20 4.4 1.4 0.0 MMMMM. 4.1 0.8 0.0 20 21 4.5 1.4 0.0 MMMMM.. 4.2 0.8 0.0 21 22 5.6 5.7 3.1 AMMM%. 4.9 3.3 2.6 22 23 6.7 7.4 3.9 XMMM%.. 5.9 4.5 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) 29-Jan-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000