SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Esperance Perth Date: 9 July, 2026 T-index: 60 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 6.9 5.7 2.8 XMMM%%. 5.8 3.4 2.3 00 01 8.0 7.0 3.4 AXMMM%%. . 6.6 4.2 2.7 01 02 8.2 7.7 3.7 AXMMMM%. . 6.9 4.7 2.9 02 03 8.4 8.1 3.8 XMMMM%% .. 7.0 5.0 3.1 03 04 8.4 8.2 3.9 XMMMM%% .. 7.1 5.0 3.1 04 05 8.4 8.1 3.8 XMMMM%% .. 7.1 5.0 3.1 05 06 8.4 7.8 3.7 AXMMMM%% . 7.2 4.7 3.0 06 07 8.5 7.1 3.4 AXMMMM%% . 7.3 4.3 2.8 07 08 8.4 6.0 2.9 XMMMMM%. . 7.1 3.5 2.4 08 09 7.5 2.3 1.3 MMMMMM%.. 6.2 0.0 1.5 09 10 5.6 1.1 0.0 MMMMM%.. 4.7 0.7 0.0 10 11 4.1 1.1 0.0 MMMM%.. 3.7 0.7 0.0 11 12 3.7 1.1 0.0 MMMM.. 3.4 0.7 0.0 12 13 3.4 1.1 0.0 MMMM.. 3.2 0.7 0.0 13 14 3.3 1.1 0.0 MMM%. 3.1 0.7 0.0 14 15 3.3 1.1 0.0 MMMM. 3.1 0.7 0.0 15 16 3.4 1.1 0.0 MMMM. 3.1 0.7 0.0 16 17 3.4 1.1 0.0 MMMM. 3.2 0.7 0.0 17 18 3.3 1.1 0.0 MMMM. 3.1 0.7 0.0 18 19 3.3 1.1 0.0 MMMM.. 3.1 0.7 0.0 19 20 3.3 1.1 0.0 MMMM.. 3.1 0.7 0.0 20 21 3.1 1.1 0.0 MMM%. 2.9 0.7 0.0 21 22 3.2 1.1 0.0 MMM%. 3.0 0.7 0.0 22 23 4.8 1.1 0.0 MMMM%. 4.2 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) 9-Jul-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000