Topband: Solar Flux Question

[Henk Remijn PA5KT]

This one has a larger span and you can see the 27 day periods.

https://www.solen.info/solar/images/swind.png

73 Henk

Op 6-11-2020 om 22:52 schreef Henk Remijn PA5KT via Topband:
> 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
>>> _________________
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>>> Reflector
>>
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