Topband: Fresnel Zone

[S57AD]

Ray, I envy you!

BTW, friend of mine has hilltop location some 3 miles from the sea and
always big signal with modest antennas TH7DX @ 30', single vertical with
elevated radials for 40 and wires for 80/160.

73, Mirko, S57AD

V V čet., 18. apr. 2019 ob 16:49 je oseba Ray Higgins <ray.w2re at gmail.com>
napisala:

> I have two questions about fresnel zone.
>
> I just purchased 22.5/ac near the ocean near Machiasport, ME. This is in
> the Northeast corner of Maine about 30 miles south of Eastport and a Lubec.
> This is going to be my personal Remote Contest station! I plan to be
> contesting from this new qth starting in 2020 but will be QRV by mid 2019
> for testing.
> This qth is anywhere between 1-3 miles from the ocean or the bay, it sits
> on a high plateau 150’ asl thats slopes in all directions to saltwater
> (peninsula) except N/NW. The property has a saltwater river and marsh that
> runs the perimeter from south to north favoring the NE direction,  the
> marsh is only 50-100' wide and 1500-2000’ away from the property. The land
> has a gradual slope to the marsh.
>
> My questions:
>
> 1.) Is the saltwater river bed/marsh wide enough to be an effective field
> in the Fresnal Zone?
> 2.) What is the wavelengths needed to be within the Fresnal zone of a
> river/marsh compared to an ocean?
>
> In this photo album (last pic) I have outlined the river saltwater marsh
> and property boundry from a google earth shot.
> https://photos.app.goo.gl/ui79t2jFo95b29et6
>
> I’m only concerned about 80 and 160m in the Fresnal Zone.
>
> Any input would be welcomed.
>
> Thanks,
>
> Ray W2RE
>
>
> Sent from my iPhone
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>


-- 
Mirko S57AD