[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 02/46
ISSUED AT 11/0147Z SEPTEMBER 2002
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

SOUTHERN AUS/NZ MUFS HAVE BEEN DEPRESSED 15%

FURTHER DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 11 SEPTEMBER 2002 SOUTHERN AUS/NZ REGION
ONLY. 

NORTHERN AUS MUFS CURRENTLY NEAR TO 15% ABOVE MONTHLY 
PREDICTED VALUES. NORTHERN AUS REGION COMMUNICATORS
SHOULD USE A TINDEX OF 130.

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
-------------------------------------------------------------
SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
11 Sep:  moderate             Possible             

HF COMMUNICATIONS FORECAST (SOUTHERN AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
-------------------------------------------------------------
11 Sep   70    -15%           2  4  6  8 12 12 16 22 

IPS Radio and Space Services      | email: asfc at ips.gov.au
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