SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Broome Perth Date: 9 November, 2025 T-index: 105 Bearings: 201 24 Distance: 1680 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 13-21 1E 2 1 5 10 15 20 25 30 35 40 2F 29-41 2E 10 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 14.9 15.7 9.2 SSSSX MBBBP%%%.. . 9.1 10.4 5.4 00 01 15.0 17.2 9.9 ASSSX XBBBPPP%.. . 9.3 11.4 5.8 01 02 15.5 18.1 10.4 ASSSX XMBBBPPP.. . 9.8 12.0 6.0 02 03 16.7 18.6 10.6 SSSS XXBBBBPP%. ... 10.3 12.4 6.2 03 04 17.4 18.8 10.7 SSSS XXMBBBBP%% ... 10.6 12.5 6.2 04 05 17.6 18.7 10.7 SSSS XXMBBBBP%% .... 10.8 12.5 6.2 05 06 17.1 18.2 10.4 ASSSS XXMBBBBP%% .... 10.6 12.2 6.0 06 07 16.1 17.3 10.0 ASSSX XMBBBBP%%% .... 10.1 11.6 5.8 07 08 15.3 15.9 9.3 ASSSX MMBBB%%%%. .. 9.8 10.6 5.5 08 09 15.6 13.8 8.3 ASSSXM MMBFF%%%%. ... 9.8 9.1 4.9 09 10 14.8 10.3 6.5 ASSMMMM MMFF%%%%.. ... 9.7 6.2 4.0 10 11 13.7 2.5 0.0 XMMMMMMMMM MFF%%%%%.. .. 9.5 1.7 0.0 11 12 12.5 2.5 0.0 XMMMMMMMMM FF%%%%.... 8.8 1.7 0.0 12 13 11.6 2.5 0.0 XMMMMMMMMM F%%%%.... 8.1 1.7 0.0 13 14 11.4 2.5 0.0 XMMMMMMMMF F%%%.... 7.6 1.7 0.0 14 15 11.5 2.5 0.0 XMMMMMMMMF F%%%.... 7.5 1.7 0.0 15 16 11.8 2.5 0.0 XMMMMMMMMF F%%%%.... 7.4 1.7 0.0 16 17 10.7 2.5 0.0 XMMMMMMMFF %%%.... 7.0 1.7 0.0 17 18 9.3 2.5 0.0 XMMMMMMMF% %%.... 6.5 1.7 0.0 18 19 8.3 2.5 0.0 XMMMMMMF%% %.... 6.1 1.7 0.0 19 20 8.2 2.5 0.0 XMMMMMMF%% %.... 5.9 1.7 0.0 20 21 8.5 2.5 0.0 XMMMMMMF%% %.... 6.2 1.7 0.0 21 22 11.7 9.7 6.2 ASSMMMF F%%%%... 7.5 6.3 3.6 22 23 14.3 13.6 8.2 ASSSMM BBBF%%%... 8.5 9.0 4.8 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-Nov-2025 BoM Space Weather Services, Sydney Australia +61-2-9213-8000