SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Albany Perth Date: 15 November, 2026 T-index: 95 Bearings: 331 152 Distance: 386 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 52-64 1E 24 1 5 10 15 20 25 30 35 40 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 6.3 5.9 3.4 BBF%%.. 00 01 6.6 6.4 3.6 ABB%%.. 01 02 7.1 6.8 3.8 ABBF%%. . 02 03 7.5 7.0 3.9 ABBB%%. . 03 04 7.8 7.1 3.9 ABBB%%. . 04 05 7.9 7.0 3.9 ABBB%%. . 05 06 7.6 6.9 3.8 ABBF%%. . 06 07 7.4 6.6 3.7 ABBF%%. . 07 08 7.3 6.1 3.5 ABBF%%. . 08 09 7.1 5.5 3.2 BBFF%%. . 09 10 7.0 4.5 2.7 ABFF%%%. 10 11 6.8 1.8 1.2 FFFFF%%.. 11 12 6.4 0.9 0.0 FFFFFF%%. 12 13 5.9 0.9 0.0 FFFFF%%.. 13 14 5.5 0.9 0.0 FFFFF%%. 14 15 5.3 0.9 0.0 FFFFF%.. 15 16 5.2 0.9 0.0 FFFFF%.. 16 17 5.0 0.9 0.0 FFFF%%. 17 18 4.7 0.9 0.0 FFFF%.. 18 19 4.4 0.9 0.0 FFFF%.. 19 20 4.2 0.9 0.0 FFFF%. 20 21 4.5 0.9 0.0 FFFF%.. 21 22 5.2 3.8 2.4 BFF%.. 22 23 5.8 5.1 3.0 ABB%%.. 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) 15-Nov-2026 BoM Space Weather Services, Sydney Australia +61-2-9213-8000