Topband: 160m Band opening phenomena

[Artek Manuals]

Here in Florida in the evenings we get a fairly consistent opening to 
Europe it begins about 1 hour BEFORE local Sunset (2215Z) , Peaks about 
1/2 hour before Sunset and then all but dies out on most nights by 15min 
after official sunset. Later around 0200Z things slowly build back up 
till around local sunrise Europe. Last night during this opening I 
actually was seeing more EU' stations as I was NA?

Our sunrise opening is more traditional sunrise +/- 15 minutes to Asia 
and the Pacific Islands

Cant say what it was before since the last tme I was on 160 from Florida 
before 2019/2020 season was back in 1985-1990 time frame

Dave NR1DX

On 12/16/2020 7:16 AM, Kees Nijdam wrote:
> Nothing wrong with conditions. Yesterday afternoon I worked K9FD in 
> Hawaii and this morning the west coast and WL7SJ.
> Good propagation to Japan also.
>
> Kees, PE5T
>
> Verzonden vanuit Mail voor Windows 10
>
> Van: Roger Kennedy
> Verzonden: woensdag 16 december 2020 13:12
> Aan: topband at contesting.com
> Onderwerp: Topband: 160m Band opening phenomena
>
>
> Well Bob my own experience these days when working NA stations is that the
> peak occurs at least 3 hours after Sunset and at least 3 hours before
> Sunrise. (and that is obviously not a Tropical path)
>
> Years ago there was definitely a peak both at their Sunset and our 
> Sunrise,
> typically around 10dB . . . but I don't think I have noticed that for 
> around
> a decade. As mentioned previously, signals seem to actually drop off 
> around
> Sunrise (both ways)
>
> I obviously have no idea what has brought about this change . . . just one
> of the many mysteries of 160m Propagation !
>
> Roger G3YRO
>
>
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-- 
Dave Manuals at ArtekManuals.com www.ArtekManuals.com


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