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A Slinky Antenna

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ANTENTOP- 01- 2020, # 024

A Slinky Antenna

 

 

 

 

Here you can see the 40lb fishing line passing through the antenna springs o provide support. This is not a self supporting antenna due to it's weight. The black wire is the shorting wire to bring the antenna to resonance. At its distant end a simple crocodile clip attaches to the relevant coil on the slinky.

 

Note the pulley at the top of the mast. To use this antenna properly it may have to go up and down the mast a bit as you try and find the right point for the shorting jumpers.

 

Nothing special for this test. A Sandpiper telescopic mast extends to around 17ft. I just tie-wrapped it to the stepladders as it was a calm day. Notice the sag in the antenna element.

 

This view is a little foreshortened by the camera but you can see the sag in the element. I really should find a way of tensioning the support wire better but I don't know when it would stop being a suport wire and turn into a guy line acting on the mast. Note here the sag on the antenna element and the low height of the far end. The highest point on my property is about 14ft and the end was tied off at about 6ft to the back of the garage wall.

 

 

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Last Updated:

May 17, 2020 19:36

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