Random Wire Antennas – A Challenge to Common Knowledge

A random wire antenna's feedpoint impedance is 450 Ohms: True or False? It must be written on a stone tablet somewhere that an end-fed random wire antenna should be fed through a 9:1 impedance transformer. Common knowledge says a 9:1 transformer, in conjunction with a tuner will bring the impedance of a random wire antenna … Continue reading Random Wire Antennas – A Challenge to Common Knowledge →

Major QMX Operator Flaw Exposed

QMX non culpa, mea culpa! I thought I was smart. I have a physics degree; college taught us 1970s long-haired layabouts 3 ways to build an atomic bomb. But half a century later I make simple errors with my ham radio equipment. The fault is mine and not QRP Labs brilliant little QMX transceiver. In … Continue reading Major QMX Operator Flaw Exposed →

David (QMX) versus Goliath (IC-705) – Let Battle Begin!

A fellow club member is the proud owner of an Icom IC-705 QRP transceiver. I am the proud owner of a QRP Labs QMX QRP transceiver. He spent CDN$2000 to buy his radio. I spent CDN$200 to buy my QMX (including factory assembly charge and shipping from Turkey). That's a 10:1 cost ratio! I challenged … Continue reading David (QMX) versus Goliath (IC-705) – Let Battle Begin! →

How Does the Speaker Wire “No Counterpoise Antenna” Work?

Fellow blogger Craig WB3GCK recently posted an account of his build of the speaker wire "No Counterpoise Antenna" and I was immediately intrigued. In fact I rushed out to the store and bought myself a couple of 50ft rolls of 18AWG speaker wire to experiment. After a couple of days of intense backyard wire whispering … Continue reading How Does the Speaker Wire “No Counterpoise Antenna” Work? →

Running the Amazing HamClock on the inovato Quadra HamPC

Ham radio and computers are inextricably linked these days. I don't carry a computer out into the Big Blue Sky Shack when I operate portable, but even there I have my phone and use it to access the POTA app and check propagation conditions. I could also log my QSOs directly into HAMRS, but I … Continue reading Running the Amazing HamClock on the inovato Quadra HamPC →

A 24ft Snake in my Back Yard – all lies and jest?

A snake in the grass! When singer/songwriter Paul Simon penned the lyrics to "The Boxer" in 1970 he may have anticipated my recent experiments with a particularly weird, unbelievable and incomprehensible antenna called "The Snake". A ham hears what he wants to hear and disregards the rest The snake I wrestled for a couple of … Continue reading A 24ft Snake in my Back Yard – all lies and jest? →

The Best Reasons to Build a Go-Box

Those of us who like to operate our radios out in the Big Blue Sky Shack will understand two basic rules: 1. Don't leave home without something important 2. Time is of the essence Rule number 1 is obvious I suppose, but I learned it the hard way. On one occasion I drove nearly an … Continue reading The Best Reasons to Build a Go-Box →

A Neat Trick with a 20m EFHW Wire Antenna

One of my favorite YouTube channels comes from the UK-based Waters and Stanton ham radio store. The presenter is Peter Waters G3OJV who delivers the content is a refreshingly unassuming, soft-spoken manner. Although it is a commercial channel, Peter introduces topics that are of general interest to hams with only modest company promotional content. A … Continue reading A Neat Trick with a 20m EFHW Wire Antenna →

Cutting My Losses

I experienced a very rare event this past weekend. I had set up my QRP field portable station at a very busy Lake Huron beach on a hot, sunny July afternoon. The scene was idyllic; blue sky, calm water, thousands of happy people. Deep beneath our feet lay the huge underground caverns of the world's … Continue reading Cutting My Losses →

Magically transform a single band ground plane into a multiband antenna – instantly

I call it "electromagnetrickery". You can learn a lot by building your own antennas, much more than if you buy commercial ones. But beware, it becomes addictive - I have a drawer full of empty wire spools to prove it. Sometimes the behaviour of those pesky electromagnetic wavicles delivers unexpected surprises. Here is the story … Continue reading Magically transform a single band ground plane into a multiband antenna – instantly →