SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 13 November, 2026 T-index: 70 Bearings: 214 39 Distance: 2219 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 7-13 1E 0 1 5 10 15 20 25 30 35 40 2F 22-31 2E 6 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 15.9 0.0 10.6 SSSX XXFFF%%%%. ... 9.3 12.4 6.4 00 01 17.1 0.0 11.3 ASSX XXXFFFF%%% ... 9.5 13.4 6.8 01 02 18.0 0.0 11.8 ASSS XXXXFFF%%% %.... 10.1 14.1 7.0 02 03 18.4 0.0 12.0 SSS XXXXFFFF%% %%..... 10.8 14.5 7.2 03 04 19.0 0.0 12.1 SSS SXXXFFFF%% %%%..... 11.2 14.7 7.2 04 05 19.5 0.0 11.9 SSS SXXXFFFFF% %%%...... 11.4 14.6 7.1 05 06 18.8 0.0 11.6 ASSS SXXXFFFF%% %%%...... 11.4 14.1 6.9 06 07 17.7 0.0 11.1 ASSS XXXMFFF%%% %%%..... 10.9 13.2 6.7 07 08 16.9 0.0 10.3 SSSS XMMFFF%%%% %...... 10.5 11.9 6.2 08 09 16.9 0.0 9.0 ASSXM MMMFFF%%%% %...... 10.6 9.8 5.6 09 10 15.4 0.0 6.5 ASMMMM MMMFF%%%%% ...... 10.2 0.0 4.5 10 11 14.1 0.0 0.0 XMMMMMMMMM MMMF%%%%%. ..... 9.7 1.8 0.0 11 12 12.8 0.0 0.0 XMMMMMMMMM MF%%%%%%.. ... 8.7 1.8 0.0 12 13 11.9 0.0 0.0 XMMMMMMMMM F%%%%%.... . 7.9 1.8 0.0 13 14 12.1 0.0 0.0 XMMMMMMMMM FF%%%%.... . 7.6 1.8 0.0 14 15 12.6 0.0 0.0 XMMMMMMMMM FF%%%%.... . 7.8 1.8 0.0 15 16 12.8 0.0 0.0 XMMMMMMMMM FF%%%%.... . 7.9 1.8 0.0 16 17 11.4 0.0 0.0 XMMMMMMMMF F%%%%.... 7.4 1.8 0.0 17 18 9.7 0.0 0.0 XMMMMMMMF% %%%..... 7.0 1.8 0.0 18 19 8.6 0.0 0.0 XMMMMMMM%% %%...... 6.7 1.8 0.0 19 20 8.5 0.0 0.0 XMMMMMMF%% %%..... 6.5 1.8 0.0 20 21 9.1 0.0 0.0 XMMMMMMMF% %%%...... 7.0 1.8 0.0 21 22 12.6 0.0 7.7 ASSXMM FF%%%%%... .. 8.5 8.1 4.8 22 23 14.8 0.0 9.5 ASSXX MFFF%%%%%. .. 8.9 10.8 5.8 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) 13-Nov-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000