[SMCARA] FYI

[Gil]

Band Openings Using Solar Flux Index & Sunspot Numbers (SFI & SN) 

 

See:  <http://www.qrz.com/index.html> http://www.qrz.com/index.html and
<http://www.hamqsl.com/solar2.html#images>
http://www.hamqsl.com/solar2.html#images 

 

64-70 (SN=0-10) Bands above 40m unusable

70-90 (SN=10-35) Poor to fair conditions all bands up through 20m

90-120 (SN=35-70) Fair conditions all bands up through 15m

120-150 (SN=70-105) Fair to good conditions all bands up through 10m

150-200 (SN=105-160) Excellent conditions all bands up through 10m w/6m
openings

200-300 (SN=160-250) Reliable communications all bands up through 6m

Note: There is not an absolute relationship between SFI & SN.

 

Also:

K – Current Earth geomagnetic activity level.

A – Average Earth geomagnetic activity level.

MUF – Maximum Usable Frequency:  <=100MHz at one of 11 locations worldwide.
Colored bar: Gray indicates No Sporadic E (ES) activity , Blue indicates ES
reported @ 6M, Green indicates ES reported @ 4M, Yellow indicates conditions
support 2M ES, and Red indicates reported @ 2M. Updated every 15-30 minutes.

Signal Noise Level - Calculated value. Indicates how much noise (in S-units)
is being generated by interaction between the solar wind and the geomagnetic
activity. A more active and disturbed solar wind, the greater the noise.
Updated every ½ hour.

 

Posted by Gil – N3UO