Specifications

Fig. 4.4 View From the Cobleigh Hall Site Towards the Remote Site.
5. Test Results
A series of tests have been done on the Redline AN-50 system to evaluate its performance.
Bench tests covering the effects of packet size, received signal strength, SNR and various user-
defined parameters within the radio were conducted. A long-range test was also conducted by
using two sector antennas to establish a link at a range of about 20 miles. In the field test several
data runs were taken to ensure reliability since the test cannot easily be redone. The only things
that could be varied under these conditions were the user definable parameters inside for the
firmware and the radio channel.
Lab Tests
5.1 Packet Size Effects: The explicit effect of variation of the packet size was investigated using
the IP Traffic test and measure suite. Packet size was varied over a large range to see what affect
that had on user throughput. Below in Figure 5.1 is a graph of the data, showing minimal
differences due to packet size. What is most important to note is the trend on the graph of
increasing throughput as the packet size is increased, up to a point at which the graph flattens
out. This is due to the overhead of each packet is set by the constant length header, so the
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