Spider Antenna - How Tilt of Radials Affects Impedance and SWR

[abcd567]

@chrislfa

It would be better to test an installed spider in situ by removing the connector from the SDR and connecting your analyser

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@xlr99

Interesting that you say that. In 1968 I was taught the very same concept by the chap who elmered me into Amateur Radio. Since then, I’ve seen and heard many hams who have done the same thing for the same reason. i.e to get the feedpoint impedance closer to the transmission line impedance.

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Here is a case where the analyzer is connected exactly as described by you.

Please Scroll down to bottom of FIRST POST to see the last 3 photos showing how & where the analyzer is connected.

Franklin-Spider Antenna (for advanced users)

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