Just remembered one other thing, the hours I use are SOLAR noon to SOLAR 2
pm. Where I live daylight time 10 am is 9 am standard time, and 8:50 am
Solar time. In Lexington, Ky, USA that would be 8:23 AM. So during summer,
I wait until 1 pm to measure. HOWEVER...
Even then there can be residual propagation. I send a test CQ at 1.5 kw,
and look at what pops up on RBN. If it only hits W4KAZ, I'm fine. If I hit
KC4YVA, 149 miles away in Richmond, VA, I know there is reduced absorption
and the reading to KAZ could be affected. There have been days when at 2 pm
solar I was hitting YVA at 20 dB. Most days at 8:30 am solar, I'm still
hitting RBN's in Ohio over 400 miles away. So you can't just do it any day
at a certain time. You have to test for sky wave first.
73, Guy K2AV
On Fri, Sep 13, 2019 at 11:41 AM Clive GM3POI <clive@gm3poi.com> wrote:
> Try it at midday. 73 Clive GM3POI
>
> -----Original Message-----
> From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Roger D
> Johnson
> Sent: 13 September 2019 10:11
> To: Towertalk Reflector; Top Band Reflector
> Subject: Re: Topband: [TowerTalk] Skip Distance
>
> These test were in late morning to early afternoon.
>
> 73, Roger
>
> On 9/12/2019 9:02 PM, Roger D Johnson wrote:
> > I've been running some tests on my 8 circle array with K1JB. Joe is 17
> miles
> > away and I sometimes notice deep fading on his signal. Makes plotting the
> > antenna pattern very difficult. Is it possible to have skywave
> contamination
> > at this short range?
> >
> > 73, Roger
> > _______________________________________________
> >
> >
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> >
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