Site Survey Problem
Articles with photo can be view at http://www.moskaluk.com/sitesurvey.htmSo I did the unspeakable. I installed a few Mesh nodes with out doing a site survey. One worked extremely well and the other well, lets say I'm writing about it. The problem is I had a small window of opportunity to install an antenna on my buddies chimney.
It was January in Toronto and the temperature went up to 12 C that day. Since the snow melted off the roofs I figure it was a good time to install the antenna. And I did. No problem, I had a visual sitting of the antenna that I wanted to mesh with so I went and install it. Since it was a beautiful warm day I went and installed a second antenna. It was days after that I went and turn on the MeshAP.
The temperature change to -12 C and it started to snow. Well winging it only got me into a worse situation. Here is why. First the clear line of site wasn't that clear. Many trees and telephone poles are in the way. Normally this isn't a big deal but I also I notice a building near the Fresnel zone. I try to get back on top of the roof to see but since it snowed, and it was too slippery to chance. So I took out my maps and photographs and will try to illustrate the problem.
The Map shows the distance and 3 areas.
On The Map 1, 2, 3 are specific locations that corresponds with photos below.
Distance is 1.37 Km. They are 200 mW radio cards on 8 dbi antenna.
Position 1 shows clear line of site
Position 2 also shows clear line of site
Position 3 there is a clear line of site unfortunately there is no picture.
Looking with binoculars from the house towards top of the building,
the only obstacles are a few deciduous trees (trees with leafs that fall.)
To solve this problem will be working on 3 scenarios
Change the configuration of the antennas to direction with
15 degrees and 20 db
Add amplifier on both antennas.
Add an additional hop between these locations.
The Panoramic Shot of the Area Facing West-North to the Airport
(use horizontal scroll bar to view picture.)
The tip of the blue arrow is pointing to behind some trees and beside
a large evergreen. Just a couple of notes the arrow should be pointing about 1 cm to the left of the #3.
It was January in Toronto and the temperature went up to 12 C that day. Since the snow melted off the roofs I figure it was a good time to install the antenna. And I did. No problem, I had a visual sitting of the antenna that I wanted to mesh with so I went and install it. Since it was a beautiful warm day I went and installed a second antenna. It was days after that I went and turn on the MeshAP.
The temperature change to -12 C and it started to snow. Well winging it only got me into a worse situation. Here is why. First the clear line of site wasn't that clear. Many trees and telephone poles are in the way. Normally this isn't a big deal but I also I notice a building near the Fresnel zone. I try to get back on top of the roof to see but since it snowed, and it was too slippery to chance. So I took out my maps and photographs and will try to illustrate the problem.
The Map shows the distance and 3 areas.
On The Map 1, 2, 3 are specific locations that corresponds with photos below.
Distance is 1.37 Km. They are 200 mW radio cards on 8 dbi antenna.
Position 1 shows clear line of site
Position 2 also shows clear line of site
Position 3 there is a clear line of site unfortunately there is no picture.
Looking with binoculars from the house towards top of the building,
the only obstacles are a few deciduous trees (trees with leafs that fall.)
To solve this problem will be working on 3 scenarios
Change the configuration of the antennas to direction with
15 degrees and 20 db
Add amplifier on both antennas.
Add an additional hop between these locations.
The Panoramic Shot of the Area Facing West-North to the Airport
(use horizontal scroll bar to view picture.)
The tip of the blue arrow is pointing to behind some trees and beside
a large evergreen. Just a couple of notes the arrow should be pointing about 1 cm to the left of the #3.
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