SWS GRAFEX HF FREQUENCY PREDICTIONS                            ADDRESS NO. 1234
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Circuit: Karratha   Perth               Date:  22 October, 2024    T-index: 140
Bearings: 184   5                       Distance: 1251 km
First Mode        |--------F r e q u e n c y  (MHz)---------|       Second Mode
1F 19-29 1E 5     1   5   10    15   20    25   30    35   40    2F 38-49 2E 14
UT  OWF EMUF  ALF |...|....| ....|....| ....|....| ....|....|  OWF EMUF  ALF UT
00 14.9 13.7  7.4     ASSXMM MBBF%%%..                        10.3  8.5  4.5 00
01 15.4 15.1  8.1     ASSSXM MMBBB%%..                        10.7  9.4  4.9 01
02 15.4 16.1  8.5      SSSXM MMBBBP%..                        11.0 10.0  5.2 02
03 15.7 16.7  8.8      SSSXX MMMBBP%%..                       11.4 10.4  5.3 03
04 16.1 16.9  8.9      SSSXX MMMBBB%%..                       11.7 10.5  5.4 04
05 16.2 16.8  8.9      SSSXX MMMBBB%%..                       11.9 10.5  5.4 05
06 15.9 16.4  8.7      SSSXX MMMBBP%%..                       11.8 10.2  5.2 06
07 15.4 15.6  8.3     ASSSXM MMMBB%%...                       11.3  9.7  5.0 07
08 14.9 14.4  7.8     ASSXMM MMBB%%%..                        11.0  9.0  4.7 08
09 15.2 12.6  7.0     SSXMMM MMFFF%%..                        10.9  7.9  4.2 09
10 15.0  9.4  5.5    SSMMMMM MMFF%%%..                        10.8  5.8  3.3 10
11 14.3  2.4  0.0 XMMMMMMMMM MFFF%%..                         10.3  1.5  0.0 11
12 13.3  2.4  0.0 XMMMMMMMMM FFF%...                           9.6  1.5  0.0 12
13 12.5  2.4  0.0 XMMMMMMMMM FF%%..                            9.0  1.5  0.0 13
14 11.6  2.4  0.0 XMMMMMMMMF F%%...                            8.2  1.5  0.0 14
15 10.8  2.4  0.0 XMMMMMMMMF %%%...                            7.7  1.5  0.0 15
16 10.2  2.4  0.0 XMMMMMMMFF %%...                             7.3  1.5  0.0 16
17  9.7  2.4  0.0 XMMMMMMMF% %...                              7.0  1.5  0.0 17
18  8.8  2.4  0.0 XMMMMMMM%% ...                               6.6  1.5  0.0 18
19  8.1  2.4  0.0 XMMMMMMF%. .                                 6.1  1.5  0.0 19
20  7.6  2.4  0.0 XMMMMMM%%.                                   5.9  1.5  0.0 20
21  8.0  2.4  0.0 XMMMMMM%%. .                                 6.1  1.5  0.0 21
22 10.5  5.8  3.7   SMMMMMFF %%..                              7.6  3.4  2.3 22
23 13.7 11.4  6.4    ASSXMMM BFF%%..                           9.4  7.1  3.8 23
UT  OWF EMUF  ALF |...|....| ....|....| ....|....| ....|....|  OWF EMUF  ALF UT
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|.  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