samedi 29 mars 2014

SWR readings on a folded dipole for 2 meters

Using schematic plans from the internet, I made a folded dipole antenna for 2 meters out of copper wire instead of copper tubing. I am getting rather bizzare readings from the MFJ-269 antenna analyzer, though. Here is a sample of the readings:





MFJ-269 Readings

Frequency / SWR / Rs / Xs

134.000 / 1.1 / 38 / 0

140.000 / 1.2 / 37 / 0

144.000 / 1.5 / 33 / 5

145.000 / 1.7 / 29 / 0

146.000 / 1.8 / 25 / 0

147.000 / 1.9 / 21 / 0

148.000 / 2.0 / 18 / 0

152.000 / 1.9 / 25 / 0

156.000 / 1.5 / 46 / 20

159.000 / 1.5 / 49 / 22



I have no idea what to make of this. Bad soldering job, of where I soldered the shieldings together? Bad RG8X cable (22 feet long)? Is it because I used copper wire instead of copper tubing? Faulty meter? Some combination of these? What did I do wrong?




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