[Ips-hf-warning] IPS HF COMMS WARNING

rwc rwc at ips.gov.au
Wed Mar 21 10:47:00 EST 2001


SUBJ: IPS HF RADIO COMMUNICATIONS WARNING 01/10
ISSUED AT 20/2337Z MARCH 2001
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

FOLLOW ON HF WARNING FROM HF WARNING: 09

DEGRADED/DEPRESSED HF CONDITIONS WERE OBSERVED ON 20 MAR. 
DEGRADED CONDITIONS NOW EXPECTED TO CONTINUE ON 21 MAR 
DUE TO UNEXPECTED INTENSIFICATION OF GEOMAGNETIC ACTIVITY 
SECOND HALF OF UT DAY ON 20 MAR.

AUS/NZ REGIONAL MUFS ARE MOSTLY NEAR NORMAL AFTER LOCAL DAWN
THIS MORNING, WITH THE EXCEPTION OF CHRISTCHURCH AND
ANTARCTIC REGION MUFS WHICH ARE 30% DEPRESSED.

WHILST FOR THE MAJORITY OF STATIONS IN THE REGION MUFS ARE NOT
DEPRESSED, DEGRADED HF COMMS QUALITY CAN BE EXPECTED FOR FIRST 
HALF OF 21 MARCH 2001, PARTICULARLY SOUTHERN AUS/NZ.  

IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND


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