SWS GRAFEX HF FREQUENCY PREDICTIONS ADDRESS NO. 1234 =============================================================================== Circuit: Bunbury Perth Date: 27 July, 2024 T-index: 130 Bearings: 8 188 Distance: 155 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 7.2 2.8 2.3 FFFFF%. 00 01 8.6 3.5 2.8 AFFFFF%. 01 02 9.4 3.8 3.1 FFFFFF% . 02 03 9.7 4.1 3.2 BFFFFF% . 03 04 9.8 4.1 3.3 BFFFFF% . 04 05 9.8 4.1 3.3 BFFFFF% . 05 06 9.6 4.0 3.2 BFFFFF% . 06 07 9.5 3.7 3.0 AFFFFFF% . 07 08 9.4 3.2 2.7 AFFFFFF% . 08 09 8.6 2.3 2.0 AFFFFFF%. 09 10 7.5 0.6 0.0 FFFFFFF%. 10 11 6.2 0.6 0.0 FFFFFF%. 11 12 5.2 0.6 0.0 FFFFF. 12 13 4.6 0.6 0.0 FFFF% 13 14 4.0 0.6 0.0 FFF%. 14 15 3.8 0.6 0.0 FFF%. 15 16 3.7 0.6 0.0 FFF%. 16 17 3.7 0.6 0.0 FFF%. 17 18 3.5 0.6 0.0 FFF%. 18 19 3.3 0.6 0.0 FFF%. 19 20 3.2 0.6 0.0 FFF%. 20 21 3.1 0.6 0.0 FFF%. 21 22 3.3 0.6 0.0 FFF. 22 23 5.2 0.6 0.0 FFFFF. 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) 27-Jul-2024 BoM Space Weather Services, Sydney Australia +61-2-9213-8000