On Wed, 14 Oct 2020 07:45:18 -0000 (UTC), Arlen Holder
wrote:

On Wed, 14 Oct 2020 00:23:10 -0700, Johann Beretta wrote:

Clearly you don't do this for a living.
That is an absolutely correct assessment.

By the way, I officially retired on Sept 30, 2020. The office is
closed, the bank accounts emptied, and much of the equipment donated
or sold.

You can advise the OP better than I on potential Fresnel Zone issues, as
he's apparently asking how best to paint a LOS location 800 feet away with
the transceiver on a pole I believe.

You can run the math to explain to him how high that pole may need to be.
(We do that stuff by trial and error - but you may know the math better.)

Sigh. I've lost count how many times I've done that in this
newsgroup. Start he
https://www.proxim.com/en/products/knowledge-center/calculations/calculations-fresnel-clearance-zone
800 ft is not far enough apart to worry about the curvature of the
earth.
800ft / 5280ft/mile = 0.152 miles
At 2.4Ghz, the Fresnel Zone is 9 ft radius at the midpoint of the
link. Therefore, the antenna at both ends of the link need to be at
least 9 ft off the ground, or 9 ft above any major obstructions
(fences, trees, buildings, cars, etc). Actually, it's somewhat more
complicated if I throw in fade margin, frequency selective fading, and
system availability, but we won't need to go there for this example.

At 5 GHz, the Fresnel Zone radius is only 6.3 ft. Therefore, the
antenna pole can be 2.7 feet shorter.

Please advise the OP on the math so he knows how high to mount the radio.

Methinks we've lost the OP long ago.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558