SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 16 February, 2026 T-index: 90 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 22-30 2E 6 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 16.3 0.0 10.9 ASSS XXFFFF%%%% .... 10.1 12.4 6.6 00 01 17.4 0.0 11.6 ASSS XXXFFFF%%% %.... 10.5 13.6 7.0 01 02 18.3 0.0 12.1 SSS XXXXFFFF%% %%.... 10.9 14.3 7.3 02 03 19.7 0.0 12.4 SSS SXXXFFFFF% %%%..... 11.5 14.8 7.4 03 04 19.9 0.0 12.4 SSS SXXXFFFFF% %%%...... 11.6 14.9 7.4 04 05 20.4 0.0 12.3 SSS SXXXFFFFFF %%%%..... 11.8 14.8 7.3 05 06 20.0 0.0 12.0 SSS SXXXMFFFF% %%%%...... 11.9 14.4 7.1 06 07 19.4 0.0 11.4 ASSS SXXMFFFFF% %%%%...... 11.7 13.4 6.8 07 08 18.4 0.0 10.5 SSSS XMMMFFFF%% %%%..... 11.4 12.0 6.4 08 09 17.4 0.0 9.1 ASSSM MMMMFFF%%% %%..... 11.0 9.7 5.6 09 10 16.4 0.0 5.7 SMMMMM MMMFFF%%%% %...... 10.7 0.0 4.3 10 11 14.8 0.0 0.0 XMMMMMMMMM MMMF%%%%%% ..... 10.1 1.9 0.0 11 12 13.6 0.0 0.0 XMMMMMMMMM MFF%%%%%.. ... 9.2 1.9 0.0 12 13 12.8 0.0 0.0 XMMMMMMMMM MF%%%%%... .. 8.6 1.9 0.0 13 14 12.1 0.0 0.0 XMMMMMMMMM FF%%%%.... 7.8 1.9 0.0 14 15 12.4 0.0 0.0 XMMMMMMMMF FF%%%%.... 7.8 1.9 0.0 15 16 12.4 0.0 0.0 XMMMMMMMMM FF%%%%.... 7.8 1.9 0.0 16 17 11.9 0.0 0.0 XMMMMMMMMF F%%%%.... 7.7 1.9 0.0 17 18 10.3 0.0 0.0 XMMMMMMMMF %%%%.... 7.3 1.9 0.0 18 19 9.1 0.0 0.0 XMMMMMMMF% %%%.... 6.9 1.9 0.0 19 20 8.0 0.0 0.0 XMMMMMM%%% %..... 6.3 1.9 0.0 20 21 8.0 0.0 0.0 XMMMMMM%%% %..... 6.1 1.9 0.0 21 22 11.0 0.0 7.5 ASSMMF %%%%..... 7.4 7.3 4.7 22 23 15.1 0.0 9.7 ASSSX MFFFF%%%.. .. 9.2 10.7 5.9 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) 16-Feb-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000