Test 18

Test site 2 to North Brookfield

Base 44.37996N -65.0064W antenna height 14m, no trees.

Mobile 44.4079N -64.9551W antenna height 6.5m

One of the most remarkable links we have seen, a 5.1km link obstructed by a substantial hill near the end, although we don't consider a link with only a 16dBm SNR satisfactory under normal conditions it would only take the choice of different antennas and /or an increase in client antenna height to raise the SNR above 20, we were surprise to make this link at all.

 In the later part of these trials we will attempt to find a suitable minimum SNR and fade margin.

The link according to Google Earth link distance 5.12km 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.

A closer look at the 17m obstruction 4.44km into the signal path, blue line is the direct line of sight between base and mobile.

Measured results from Base Station status page

Measured results from Mobile CPE Status page


Realitivily light tree cover (less than 20m deciduous) in area near antenna may have contributed to good results

Near perfect clearance around the base station antenna helped