HF Communications Warning

(last updated 15 Dec 2018 06:15 UT)

SUBJ: SWS HF RADIO COMMUNICATIONS WARNING 18/26 ISSUED AT 2323UT/13 DECEMBER 2018 BY THE AUSTRALIAN SPACE FORECAST CENTRE. MUF depressions of 15% to 35% are expected for the UT days 14-15 December 2018 due to lower than predicted levels of ionising radiation from the Sun. DEGRADED HF PROPAGATION CONDITIONS EXPECTED FROM 14-15 DECEMBER 2018 IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND _____________________________________________________________ HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION) FREQUENCY BANDS T-index MUFs 2 4 6 8 12 16 22 26 _____________________________________________________________ 14 Dec: -40 -25% 2 4 6 8 8 12 16 16 15 Dec: -40 -25% 2 4 6 8 8 12 16 16