The 80M elevated wire vertical array

Written by admin On August - 26 - 2010 0 Comment

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.

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

Written by admin On August - 19 - 2010 0 Comment

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.

Phased 40M Wire Verticals

Written by admin On August - 15 - 2010 5 Comments

Here’s a two-element array of wire verticals for 40M — read about using passive phasing, then Christman phasing. Includes a handy online calculator for phasing line lengths, and audio clips of the array in action.

Analyzing my terrain for HF gain

Written by admin On July - 11 - 2010 0 Comment

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.

QSL cards

Written by admin On May - 20 - 2010 0 Comment

Are you waiting for a QSL from VA7ST? All contacts in my log receive a confirmation using the ARRL’s Logbook of the World.

End of an Era: Kon-Tiki

Written by admin On January - 20 - 2010 0 Comment

On Christmas Day 2009, Knut Haugland, the last surviving crew member of the Kon-Tiki voyage, passed away at the age of 92.

Farewell to a friend, Bob VE6YR

Written by admin On December - 30 - 2009 0 Comment

The radiosport world lost a great competitor with the passing of Bob McCarthy VE6YR on December 22, 2009. Bob was an avid radio contester, particularly active in RTTY (radio-teletype) contests.

Building a Beverage receive antenna

Written by admin On November - 16 - 2009 0 Comment

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.

Christman phasing calculator

Written by admin On November - 7 - 2009 1 Comment

This handy calculator will determine the lengths of coax feedlines and phasing line for Christman phasing — great for verticals spaced 1/4-wave apart. [Note: will not display if you use Internet Explorer].

SteppIR 3-element yagi

Written by admin On May - 15 - 2009 0 Comment

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.