SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Busselton Perth Date: 14 November, 2026 T-index: 95 Bearings: 15 195 Distance: 196 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F/1E: Near 90 1 5 10 15 20 25 30 35 40 ** NONE ** UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 5.9 4.0 3.0 ABF%%.. 00 01 6.3 4.3 3.3 BFF%%. 01 02 6.8 4.6 3.4 BFF%%.. 02 03 7.2 4.7 3.5 AFFF%.. 03 04 7.4 4.8 3.6 AFFF%%. . 04 05 7.6 4.8 3.6 AFFF%%. . 05 06 7.3 4.7 3.5 AFFF%%. 06 07 7.1 4.5 3.4 BFFF%%. 07 08 6.9 4.2 3.2 BFF%%.. 08 09 6.8 3.8 2.9 AFFF%%.. 09 10 6.7 3.1 2.5 AFFF%%.. 10 11 6.5 1.5 1.3 FFFFF%%. 11 12 6.1 0.6 0.0 FFFFFF%.. 12 13 5.6 0.6 0.0 FFFFF%%. 13 14 5.3 0.6 0.0 FFFFF%.. 14 15 5.1 0.6 0.0 FFFFF%. 15 16 5.1 0.6 0.0 FFFFF%. 16 17 4.8 0.6 0.0 FFFF%%. 17 18 4.5 0.6 0.0 FFFF%. 18 19 4.3 0.6 0.0 FFFF%. 19 20 4.1 0.6 0.0 FFFF%. 20 21 4.3 0.6 0.0 FFFF%. 21 22 4.9 2.5 2.0 AFF%%. 22 23 5.5 3.4 2.7 AFF%%. 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) 14-Nov-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000