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CAPS - Current Conditions, North America
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Solar Geomag. Conditions Global Comm. Status Global MUF/foF2 Status Global Scintillation Status Data Figures About Site Map

North America Outlook Probabilities
Issue time: 2008 Nov 16 2005 UTC (2008/321)
Communication Alert: HF/VHF radio blackouts
Solar Flare Effects: none
Geomag Storm Effects: none
 
current
1hr
3hr
6hr
12hr
24hr
72hr
7dy
14dy
30dy
HF
RED
RED
RED
RED
BLU
BLU
BLU
BLU
BLU
BLU
VHF
RED
RED
RED
RED
BLU
BLU
BLU
BLU
BLU
BLU

Current and predicted communications conditions

  • Red - high frequencies (HF) are unavailable (>22 MHz)
  • Yellow - lowest usable frequency (LUF) and maximum usable frequency (MUF) range is 15-22 MHz
  • Green - LUF-MUF range is 8-15 MHz
  • Blue - LUF-MUF range is 3-8 MHz

If a communication link is not working at these frequencies, there is a higher probability of malfunctioning equipment and/or jamming as a cause for outage.

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Solar Geomag. Conditions Global Comm. Status Global MUF/foF2 Status Global Scintillation Status Data Figures About Site Map