SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Esperance Perth Date: 11 June, 2026 T-index: 85 Bearings: 289 112 Distance: 602 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 37-41 1E 15 1 5 10 15 20 25 30 35 40 2F 57-60 2E 30 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 8.1 5.8 2.9 XMMMMF%. . 6.6 3.5 2.4 00 01 9.3 7.2 3.5 AXMMMMM% .. 7.7 4.4 2.8 01 02 9.9 7.9 3.8 XMMMMM% %.. 8.3 4.8 3.1 02 03 10.0 8.3 4.0 XXMMMM% %.. 8.4 5.1 3.2 03 04 9.9 8.5 4.0 XXMMMM% %.. 8.4 5.2 3.2 04 05 10.0 8.4 4.0 XXMMMM% %.. 8.5 5.1 3.2 05 06 10.1 8.0 3.8 XMMMMMM %.. 8.6 4.9 3.1 06 07 10.1 7.3 3.6 AXMMMMMM %... 8.6 4.4 2.9 07 08 9.8 6.1 3.1 AMMMMMM% %.. 8.2 3.6 2.5 08 09 8.8 1.6 1.0 MMMMMMMM%% .. 7.4 0.0 1.5 09 10 6.7 1.2 0.0 MMMMMM%%.. 5.6 0.7 0.0 10 11 5.0 1.2 0.0 MMMMM%.. 4.4 0.7 0.0 11 12 4.2 1.2 0.0 MMMM%.. 3.8 0.7 0.0 12 13 3.9 1.2 0.0 MMMM.. 3.6 0.7 0.0 13 14 3.6 1.2 0.0 MMMM.. 3.4 0.7 0.0 14 15 3.6 1.2 0.0 MMMM.. 3.3 0.7 0.0 15 16 3.6 1.2 0.0 MMMM.. 3.3 0.7 0.0 16 17 3.6 1.2 0.0 MMMM.. 3.4 0.7 0.0 17 18 3.6 1.2 0.0 MMMM.. 3.3 0.7 0.0 18 19 3.6 1.2 0.0 MMMM.. 3.4 0.7 0.0 19 20 3.7 1.2 0.0 MMMM.. 3.4 0.7 0.0 20 21 3.4 1.2 0.0 MMMM.. 3.2 0.7 0.0 21 22 3.5 1.2 0.0 MMMM. 3.3 0.7 0.0 22 23 5.4 1.2 0.0 MMMMM%. 4.6 0.7 0.0 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) 11-Jun-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000