[Ips-hf-warning] IPS HF COMMS WARNING

[rwc]

SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 04/20
ISSUED AT 04/0126Z APRIL 2004
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

HF conditions may show degradations from 05 to 07 April 
with possible depressions in MUFs due to an anticipated 
rise in geomagnetic activity during this period. 

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 05-07 APRIL 2004
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS             
05 Apr:  Very Low to low      None expected        
06 Apr:  Very Low to low      None expected        
07 Apr:  Very low to low      None expected        

HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS  
       T-index  MUFs          2  4  6  8 12 16 22 26
_____________________________________________________________
5 Apr    52   -5 to -10%     2  4  6  8 12 16 22 22 
6 Apr    45   -10 to -20%    2  4  6  8 12 16 16 16 
7 Apr    45   -10 to -20     2  4  6  8 12 16 16 16 


IPS Radio and Space Services      | email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
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