Antennas

CDE rotator scale: refit for North center

April 11, 2011

Depending on your location, changing your rotator control meter’s scale to a north-centered scale could greatly reduce the turning required to work the most popular areas. Here’s a step-by-step guide to making the change on a CDE rotator control — including a printable high-resolution image of the North-centered meter scale.

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The 80M elevated wire vertical array

August 26, 2010

Here’s a great 80M antenna: a pair of raised 1/4-wave (68′) verticals in the pine woods, using Christman phasing, and capable of firing in either of two directions. Mine aim east and west.

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A cheap 40M DX machine: the twin half-square array

August 19, 2010

This may be the cheapest, lowest, no-radials-required, no fancy networks, way to get great gain on 40M. If you have some rope, trees, junkbox wire, a couple of DPDT relays, and some coax laying around, you have all it takes to build this antenna.

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Analyzing my terrain for HF gain

July 11, 2010

Sometimes when my antenna is at 25′, I do quite well into Canada and the U.S — perhaps even better than with the antenna at 45′. Terrain analysis helped end the mystery of height vs. performance at this ridge-top QTH.

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Building a Beverage receive antenna

November 16, 2009

If you have room to run a short 270′-long Beverage antenna, you’ll improve your reception on the low bands (160M and 80M). Here’s how I built the antenna and just-too-easy transformer.

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SteppIR 3-element yagi

May 15, 2009

Choosing the SteppIR 3-element was not a difficult decision. Those who have used this antenna swear by it. Read my notes as I purchased, installed and put one on the air at VA7ST.

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A linear-loaded 40M rotatable dipole

August 27, 2006

The “crappie pole” is a short, linearly loaded 40M rotatable dipole you can build for $50 or less. And it works!

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The Small, Powerful Hex Beam

May 15, 2002

This is a home-made five-band antenna made from bits of bamboo, some hose clamps, a few wires, and lots of hours of puzzling, building and — at last — huge satisfaction.

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