SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 16 November, 2025 T-index: 100 Bearings: 214 39 Distance: 2219 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 8-14 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 17.0 0.0 11.2 ASSS XXFFFF%%%% %.... 10.1 12.8 6.7 00 01 17.7 0.0 11.9 SSS XXXFFFF%%% ..... 10.3 13.9 7.2 01 02 18.6 0.0 12.4 SSS XXXXFFFF%% %..... 10.8 14.6 7.4 02 03 19.4 0.0 12.7 ASS SXXXFFFFF% %%%.... 11.3 15.0 7.5 03 04 20.2 0.0 12.7 ASS SXXXXFFFFF %%%%..... 11.7 15.2 7.6 04 05 20.7 0.0 12.6 ASS SXXXXFFFFF %%%%..... 11.9 15.1 7.5 05 06 20.0 0.0 12.3 SSS SXXXFFFFF% %%%%..... 11.8 14.6 7.3 06 07 18.7 0.0 11.7 ASSS SXXMFFFF%% %%%..... 11.3 13.7 7.0 07 08 17.8 0.0 10.8 ASSS XXMFFFF%%% %%..... 10.9 12.3 6.6 08 09 18.0 0.0 9.5 ASSSX MMMMFFF%%% %%..... 11.0 10.2 5.9 09 10 16.9 0.0 6.9 ASMMMM MMMMFF%%%% %%..... 11.0 0.0 4.7 10 11 15.8 0.0 0.0 XMMMMMMMMM MMMFF%%%%% ...... 10.8 2.0 0.0 11 12 14.6 0.0 0.0 XMMMMMMMMM MMFF%%%%%. .... 9.8 2.0 0.0 12 13 13.7 0.0 0.0 XMMMMMMMMM MFF%%%%%.. .. 9.0 2.0 0.0 13 14 13.7 0.0 0.0 XMMMMMMMMM FFF%%%%... .. 8.6 2.0 0.0 14 15 14.0 0.0 0.0 XMMMMMMMMM FFF%%%%%.. .. 8.6 2.0 0.0 15 16 14.3 0.0 0.0 XMMMMMMMMM FFFF%%%%.. ... 8.7 2.0 0.0 16 17 12.8 0.0 0.0 XMMMMMMMMM FF%%%%.... 8.1 2.0 0.0 17 18 11.2 0.0 0.0 XMMMMMMMMF F%%%%.... 7.5 2.0 0.0 18 19 10.1 0.0 0.0 XMMMMMMMFF %%%%.... 7.1 2.0 0.0 19 20 10.1 0.0 0.0 XMMMMMMMFF %%%%.... 6.9 2.0 0.0 20 21 10.5 0.0 0.0 XMMMMMMMMF %%%%..... 7.4 2.0 0.0 21 22 14.1 0.0 8.1 ASSSMM MFFF%%%%.. ... 8.9 8.4 5.0 22 23 16.6 0.0 10.1 SSSX XMFFFF%%%% .... 9.6 11.2 6.1 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-Nov-2025 BoM Space Weather Services, Sydney Australia +61-2-9213-8000