[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 04/15
ISSUED AT 19/0018Z FEBRUARY 2004
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

SOUTHERN AUS REGION MUFS HAVE AGAIN BECOME
DEPRESSED AFTER LOCAL DAWN. CAUSE UNKNOWN.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 19 FEBRUARY 2004 SOUTHERN AUS REGION ONLY.
NORTHERN AUS REGION HF COMMUNICATORS SHOULD USE
A TINDEX OF 55.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
19 Feb:  very low             None expected        

HF COMMUNICATIONS FORECAST (SOUTHERN AUSTRALIAN REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
_____________________________________________________________
19 Feb   20    -15%           2  4  6  8 12 12 16 22 


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