SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Albany Perth Date: 22 October, 2024 T-index: 140 Bearings: 331 152 Distance: 386 km First Mode |--------F r e q u e n c y (MHz)---------| Second Mode 1F 52-63 1E 24 1 5 10 15 20 25 30 35 40 UT OWF EMUF ALF |...|....| ....|....| ....|....| ....|....| OWF EMUF ALF UT 00 8.7 6.0 3.5 ABBFF%. . 00 01 9.2 6.6 3.8 ABBFFF% . 01 02 9.6 7.0 4.0 ABBBFF% .. 02 03 10.1 7.2 4.1 BBBFFF %.. 03 04 10.4 7.3 4.2 BBBFFF %.. 04 05 10.5 7.3 4.2 BBBFFF %%. 05 06 10.4 7.1 4.1 BBBFFF %.. 06 07 9.9 6.7 3.9 ABBFFF% %. 07 08 9.8 6.2 3.7 ABBFFF% %. 08 09 9.6 5.5 3.3 BBFFFF% %. 09 10 9.4 4.2 2.6 ABFFFFF% .. 10 11 9.0 1.0 0.0 BFFFFFFF%% . 11 12 8.5 1.0 0.0 BFFFFFFF%. 12 13 7.7 1.0 0.0 BFFFFFF%. 13 14 6.9 1.0 0.0 BFFFFF%%. 14 15 6.4 1.0 0.0 BFFFFF%.. 15 16 6.0 1.0 0.0 BFFFF%%.. 16 17 5.7 1.0 0.0 BFFFF%.. 17 18 5.5 1.0 0.0 BFFFF%.. 18 19 5.2 1.0 0.0 BFFFF%. 19 20 5.0 1.0 0.0 BFFF%%. 20 21 5.0 1.0 0.0 BFFF%%. 21 22 6.4 3.2 2.1 BFFF%. 22 23 7.8 5.0 3.1 BBFF%.. 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) 22-Oct-2024 BoM Space Weather Services, Sydney Australia +61-2-9213-8000