SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 19 January, 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 22-32 2E 6 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 16.0 0.0 10.7 SSXX XXFFF%%... 8.7 12.5 6.4 00 01 17.2 0.0 11.3 ASSX XXXFFFF%.. . 9.4 13.5 6.8 01 02 18.0 0.0 11.8 ASSX XXXXFFF%%. ... 9.9 14.2 7.0 02 03 18.4 0.0 12.0 SSS XXXXFFFF%% ..... 10.2 14.6 7.2 03 04 18.6 0.0 12.1 SSS XXXXFFFF%% %...... 10.4 14.7 7.2 04 05 18.4 0.0 12.0 SSS XXXXFFFF%% %%...... 10.8 14.6 7.1 05 06 18.2 0.0 11.6 ASSS XXXXFFFF%% %%%..... 10.8 14.1 7.0 06 07 17.4 0.0 11.1 ASSS XXXFFFF%%% %%...... 10.4 13.3 6.7 07 08 16.5 0.0 10.3 SSSS XMMFFF%%%% %..... 10.2 12.0 6.3 08 09 15.7 0.0 9.1 ASSSM MMFFF%%%%% ..... 9.9 9.9 5.7 09 10 14.3 0.0 6.8 ASMMMM MMFF%%%%%. .... 9.6 5.2 4.6 10 11 13.0 0.0 0.0 XMMMMMMMMM MM%%%%%%.. ... 9.0 1.8 0.0 11 12 12.3 0.0 0.0 XMMMMMMMMM MF%%%%%... .. 8.6 1.8 0.0 12 13 11.9 0.0 0.0 XMMMMMMMMM F%%%%%.... . 8.1 1.8 0.0 13 14 11.9 0.0 0.0 XMMMMMMMMM F%%%%%.... 7.8 1.8 0.0 14 15 12.3 0.0 0.0 XMMMMMMMMM FF%%%%.... 7.8 1.8 0.0 15 16 12.0 0.0 0.0 XMMMMMMMMF F%%%%..... 7.7 1.8 0.0 16 17 11.4 0.0 0.0 XMMMMMMMMF F%%%%.... 7.4 1.8 0.0 17 18 9.3 0.0 0.0 XMMMMMMMF% %%%.... 7.0 1.8 0.0 18 19 8.3 0.0 0.0 XMMMMMMM%% %%..... 6.5 1.8 0.0 19 20 7.2 0.0 0.0 XMMMMMM%%% ..... 5.8 1.8 0.0 20 21 7.5 0.0 0.0 XMMMMMM%%% %..... 6.0 1.8 0.0 21 22 11.1 0.0 7.9 ASSXMF F%%%..... 7.5 8.4 4.8 22 23 14.1 0.0 9.6 ASSXX FFFF%%... 8.1 10.9 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) 19-Jan-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000