Test 22 Tests conducted after the leafs had left the trees
Test site 2 to Mersey Tobeatic Research Institute
Base 44.37996N -64.9701W antenna height 14m 8dBi yagi, clear for 250ft and then a few trees
Mobile 44.42437N -65.10119W antenna height 6.5m 8dBi yagi, clear for 300ft and then 15m evergreen trees.
A 9km link skimming the tree tops for about 1/2 its' length.
This link is of particular interest to us not only because of its' length but because it came in considerable better than expected, we can only speculate as to why.
1) The leafs are now off the trees, however the is only a small percentage of deciduous trees along the link.
2) Our assumed average tree height is too high, we only managed to measure the tree height around the ends of the link.
3) Recent logging activity
4) A better than average clear area around the mobile antenna enabling it to perform as designed.
5) possible in phase reflections from near by hills.
It would be particularly interesting to run a long term test on this link. (we are now running a longer term test)
The link according to Google Earth distance 9km, elevation and foliage below.
KML File that opens in Google Earth is available for those wishing to take a detailed look at the terrain and vegetation
Radio Mobile simulated link data using assumed tree height of
20 meters and density of 130
This setting can be found under options- elevation data.
Measured results from Base Station status page
Measured results from Mobile CPE Status page
Speed measured using speedtest.net and the TCP protocol, speeds quoted on the status page are the raw data rate or UDP protocol partially explaining the difference
Note we are using LTE for our internet connection at our base for this test which explains the high ping time, tests between the CPE and base average under 2ms.
We were fortunate to have a relatively large clear area around both the base and mobile antenna enabling them to perform as designed.
This picture illustrates a problem many subscribers face the Institute has tried both satellite and fixed wireless (Canopy) it worked for a while but the system quickly reached the point where it couldn't handled the traffic. Our link passes directly over the site of the 100ft Canopy access point installation at 5km and on another 4km to a point where a DSL connection is available, our base station antenna height is only 45ft.