SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Kununurra Perth Date: 10 March, 2026 T-index: 95 Bearings: 214 39 Distance: 2219 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 7-11 1E 0 1 5 10 15 20 25 30 35 40 2F 22-28 2E 6 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 19.4 0.0 10.7 ASSS XXMMFFFFF% %%%... 12.3 12.1 6.5 00 01 21.2 0.0 11.6 ASSS SXXMMFFFFF F%%%%... 13.2 13.4 7.0 01 02 22.0 0.0 12.1 SSS SSXXMFFFFF F%%%%.... 13.2 14.2 7.3 02 03 23.1 0.0 12.4 SSS SSXXMMFFFF FFF%%%.... 13.6 14.7 7.4 03 04 23.3 0.0 12.4 SSS SSXXMMFFFF FFF%%%.... 13.7 14.8 7.4 04 05 23.5 0.0 12.3 SSS SSXXMMFFFF FFF%%%.... . 13.9 14.7 7.3 05 06 23.1 0.0 11.9 SSS SXXXMMFFFF FFF%%%%... . 13.6 14.3 7.1 06 07 22.4 0.0 11.3 ASSS SXXMMMFFFF FF%%%%.... . 13.2 13.3 6.8 07 08 22.1 0.0 10.3 SSSS XMMMMMFFFF FF%%%%.... . 13.1 11.7 6.2 08 09 21.0 0.0 8.7 SSSXM MMMMMFFFFF %%%%%.... 13.0 9.1 5.4 09 10 18.2 0.0 0.0 MMMMMMMMMM MMMMFFFF%% %%%..... 11.8 0.0 3.4 10 11 15.4 0.0 0.0 XMMMMMMMMM MMMFF%%%%% ....... 10.6 2.0 0.0 11 12 13.5 0.0 0.0 XMMMMMMMMM MFF%%%%%.. .... 9.3 2.0 0.0 12 13 12.8 0.0 0.0 XMMMMMMMMM MF%%%%%... .. 8.6 2.0 0.0 13 14 12.1 0.0 0.0 XMMMMMMMMM FF%%%%.... . 8.0 2.0 0.0 14 15 12.3 0.0 0.0 XMMMMMMMMM FF%%%%.... . 7.9 2.0 0.0 15 16 12.1 0.0 0.0 XMMMMMMMMF FF%%%..... . 7.8 2.0 0.0 16 17 12.0 0.0 0.0 XMMMMMMMMF F%%%%..... 7.7 2.0 0.0 17 18 10.7 0.0 0.0 XMMMMMMMMF %%%%..... 7.3 2.0 0.0 18 19 9.6 0.0 0.0 XMMMMMMMF% %%%..... 7.0 2.0 0.0 19 20 8.3 0.0 0.0 XMMMMMMF%% %.... 6.2 2.0 0.0 20 21 8.2 0.0 0.0 XMMMMMMF%% %.... 6.1 2.0 0.0 21 22 12.2 0.0 6.5 SSMMMF FF%%%.... 7.7 5.0 4.4 22 23 17.8 0.0 9.4 ASSSX MMMFFFF%%% %... 11.0 10.1 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) 10-Mar-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000