SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 30 November, 2025 T-index: 85 Bearings: 214 39 Distance: 2219 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 7-14 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 16.3 0.0 11.0 ASSX XXFFFF%%%. ... 9.2 12.7 6.6 00 01 17.5 0.0 11.7 ASSX XXXFFFF%%% .... 9.6 13.7 7.0 01 02 18.3 0.0 12.1 SSS XXXXFFFF%% %.... 10.1 14.4 7.2 02 03 18.8 0.0 12.3 SSS XXXXFFFF%% %%..... 10.7 14.8 7.4 03 04 19.1 0.0 12.4 SSS XXXXFFFFF% %%%..... 11.0 15.0 7.4 04 05 19.8 0.0 12.3 SSS SXXXFFFFF% %%%%..... 11.3 14.9 7.3 05 06 19.2 0.0 12.0 SSS SXXXFFFFF% %%%...... 11.2 14.4 7.2 06 07 18.2 0.0 11.4 ASSS XXXMFFFF%% %%%..... 10.8 13.5 6.9 07 08 17.3 0.0 10.6 ASSS XXMFFFF%%% %%..... 10.5 12.2 6.5 08 09 17.0 0.0 9.4 ASSSX MMMFFF%%%% %..... 10.6 10.2 5.8 09 10 15.6 0.0 7.1 ASSMMM MMMFF%%%%% ...... 10.2 5.6 4.8 10 11 14.5 0.0 0.0 XMMMMMMMMM MMFF%%%%%. ..... 9.9 1.9 0.0 11 12 13.6 0.0 0.0 XMMMMMMMMM MMF%%%%%.. .... 9.2 1.9 0.0 12 13 13.1 0.0 0.0 XMMMMMMMMM MFF%%%%%.. ... 8.6 1.9 0.0 13 14 13.4 0.0 0.0 XMMMMMMMMM FFF%%%%... .. 8.4 1.9 0.0 14 15 13.9 0.0 0.0 XMMMMMMMMM FFF%%%%%.. ... 8.5 1.9 0.0 15 16 13.9 0.0 0.0 XMMMMMMMMM FFF%%%%%.. ... 8.5 1.9 0.0 16 17 12.5 0.0 0.0 XMMMMMMMMM FF%%%%.... 7.9 1.9 0.0 17 18 10.8 0.0 0.0 XMMMMMMMMF %%%%..... 7.5 1.9 0.0 18 19 9.7 0.0 0.0 XMMMMMMMF% %%%%..... 7.2 1.9 0.0 19 20 9.3 0.0 0.0 XMMMMMMMF% %%%..... 6.9 1.9 0.0 20 21 9.6 0.0 0.0 XMMMMMMMF% %%%%..... 7.2 1.9 0.0 21 22 12.8 0.0 8.2 ASSSMM FF%%%%%... .. 8.5 8.7 5.0 22 23 14.7 0.0 9.9 ASSXX XFFF%%%%.. .. 8.8 11.2 6.0 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) 30-Nov-2025 BoM Space Weather Services, Sydney Australia +61-2-9213-8000