SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 6 November, 2026 T-index: 50 Bearings: 214 39 Distance: 2219 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 7-12 1E 0 1 5 10 15 20 25 30 35 40 2F 21-29 2E 6 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 15.4 0.0 10.2 SSSX XMFFF%%%%. .. 9.4 12.0 6.1 00 01 16.7 0.0 10.9 ASSX XXXFFF%%%. ... 9.5 13.1 6.5 01 02 17.5 0.0 11.3 ASSS XXXFFFF%%% .... 10.1 13.8 6.8 02 03 18.0 0.0 11.6 ASSS XXXXFFF%%% %%..... 10.7 14.2 6.9 03 04 18.7 0.0 11.6 ASSS SXXXFFFF%% %%...... 11.1 14.3 6.9 04 05 19.0 0.0 11.5 ASSS SXXXFFFF%% %%%..... 11.3 14.2 6.8 05 06 18.4 0.0 11.2 ASSS SXXMFFFF%% %%%..... 11.3 13.8 6.7 06 07 17.6 0.0 10.7 SSSS XXMFFFF%%% %%..... 10.9 12.9 6.4 07 08 16.8 0.0 9.9 ASSSX XMMFFF%%%% %..... 10.6 11.6 6.0 08 09 16.8 0.0 8.6 SSSXM MMMFFF%%%% %..... 10.7 9.4 5.3 09 10 15.0 0.0 5.9 SMMMMM MMMF%%%%%% ..... 10.2 0.0 4.2 10 11 13.1 0.0 0.0 XMMMMMMMMM MMF%%%%%.. .... 9.2 1.7 0.0 11 12 11.8 0.0 0.0 XMMMMMMMMM M%%%%%.... .. 8.5 1.7 0.0 12 13 11.0 0.0 0.0 XMMMMMMMMF %%%%%..... 7.6 1.7 0.0 13 14 11.0 0.0 0.0 XMMMMMMMMF %%%%%.... 7.3 1.7 0.0 14 15 11.6 0.0 0.0 XMMMMMMMMF F%%%%.... 7.4 1.7 0.0 15 16 11.6 0.0 0.0 XMMMMMMMMF F%%%%.... 7.4 1.7 0.0 16 17 10.5 0.0 0.0 XMMMMMMMFF %%%.... 7.0 1.7 0.0 17 18 9.0 0.0 0.0 XMMMMMMM%% %%.... 6.5 1.7 0.0 18 19 8.2 0.0 0.0 XMMMMMMF%% %.... 6.1 1.7 0.0 19 20 7.9 0.0 0.0 XMMMMMM%%% %.... 5.9 1.7 0.0 20 21 8.8 0.0 0.0 XMMMMMMF%% %%..... 6.4 1.7 0.0 21 22 12.2 0.0 7.3 ASSMMM FF%%%%.... 8.3 7.6 4.5 22 23 14.5 0.0 9.1 ASSXX MFFF%%%%.. . 9.0 10.4 5.5 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) 6-Nov-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000