[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 04/14
ISSUED AT 18/0140Z FEBRUARY 2004
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

Unexpected depressions in MUFs are being observed across 
almost all Australian/NZ regions. The cause of these
depressions is unknown. MUFs may recover as the day 
progresses.


DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 18 FEBRUARY 2004
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

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

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


IPS Radio and Space Services      | email: asfc at ips.gov.au
PO Box 1386                       | WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060 

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