Measure MLL using the half ReturnLoss method – a spot test with a hand held analyser
At Exploiting your antenna analyser #14 I gave an explanation of the method of approximating MLL of a line section by taking the average half Return Loss with o/c and s/c terminations.
This article demonstrates the technique using the Rigexpert AA-600 analyser in hand held mode.
The task is to assess whether a section of RG58A/U coax has MLL at 3.5MHz similar to specification or not.
The specification loss of 10.13m of RG58A/U has MLL=0.29dB.
Above, the first test with an o/c termination. Return Loss is 0.4dB. Continue reading Exploiting your antenna analyser #15