Topband: Solar Flux Question

[Henk Remijn PA5KT]

My experience is that 160 conditions are also influenced by the solar wind.

https://solen.info/solar/indices.html.

This graph shows SFI and solar wind. When solar winds are up to 300 km/s 
the conditions are usually good on 160.

This happened in the beginning of october. Conditions in the week before 
the Stew Perry TBDC were good, During the contest it was less.

Due to the rotation of the Sun in approx 27 days you can a bit predict 
if it is useful to be on the band.

Other might have other experiences.

73 Henk PA5KT


Op 6-11-2020 om 21:55 schreef Artek Manuals:
> Bill
>
> Last night ON 160 I worked 32 European and SA stations with the 
> reported SFI of 88.  earlier in the week with a similar SFI number I 
> heard nothing from EU on 160. Conclusion : At these levels SFI is not 
> the factor
>
> Conditions on 15 and 12 have been for the last week or so been great . 
> Lots of long path on 40 through 15 depending on the time of day & 
> band. certainly far better than a year ago at SFI of 68-72 on the 
> upper bands, on 160 and 80 hasn't been much of factor so far
>
> DAVE
> nr1dx
>
>
> On 11/6/2020 3:23 PM, Bill Stewart wrote:
>> Per WWV, the solar flux is at 91. What, if any, affect does this have 
>> on propagation in HF or other
>> frequency bands....and of course 160 meters. I have seen these 
>> geophysical numbers often, but
>> never really understood what they meant. The flux has been running in 
>> the high 60s/low 70s until
>> a few weeks ago when I saw it in the 80s.
>> Tnx de Bill K4JYS
>> _________________
>> Searchable Archives: http://www.contesting.com/_topband - Topband 
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>