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Ham Radio . Magnum Experimentum

Antennas, experiments, engineering and other articles of interest to radio folks.

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S11

Copper efficiency after weathering

July 4, 2021
KX4O Small Transmitting Loop

I use a weathered copper small transmitting loop to see if copper oxide affects antenna conductivity and hence efficiency.

Categories Antennas Tags bandwidth, copper, oxidation, oxide, S11, STL, VSWR

Aluminum RF power splitters under test

January 1, 2021March 11, 2016
Two RF power splitters

Two examples of square aluminum RF power splitters built from 1973 plans reveal a 15 MHz difference from the claimed design frequency.

Categories Accessories Tags Aluminum, brass, coaxial, measurement, power splitter, S11, S21, splitter

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