I once drove to a park about 45 minutes away from home to do a POTA activation then realized I had left my antenna at home. <<Panic>>. I improvised by digging a 33ft wire out of my pack, cutting it in half and hastily erecting a V-dipole with its ends only about 10ft above the … Continue reading A Quick and Easy QRP Emergency Field Antenna
Tag: Counterpoise
Is an EFHW Antenna Truly Multiband?
A fierce debate rages on one of the online forums I read. Is an End-Fed Half-Wave (EFHW) truly a multiband antenna? By "multiband" I mean resonant on even harmonics without a tuner. The most vocal posters in that forum keenly disparage these popular antennas despite their popularity. Resonant on every band, earn DXCC in a … Continue reading Is an EFHW Antenna Truly Multiband?
CLEFHW antenna: Ready for Action
In the last post I introduced a crazy, off-the-wall idea for a variation of the popular End-Fed Half-Wave (EFHW) antenna. I called it the CLEFHW - Coil Loaded End-Fed Half-Wave. Its purpose is to allow backpack portable operation of an electrical half wavelength antenna without the need for a tree or pole to suspend a … Continue reading CLEFHW antenna: Ready for Action
Rebuilding the Winter Rybakov Antenna
Almost a year ago I wrote a post entitled "A Simpler Field Expedient Rybakov Antenna for Winter". It is worthwhile to read that post to understand why I felt it necessary to make a winter version of a proven, tried and trusted antenna. My home turf is southern Ontario, Canada about 200km northwest of Toronto. … Continue reading Rebuilding the Winter Rybakov Antenna
A Deep Dive into the Antenna Called “Long Tall Sally”
Back in the spring of 2024 Ham Radio Outside the Box introduced a very unusual field expedient portable antenna for 20m. It was dubbed "Long Tall Sally" because we took a standard quarter wave ground plane, stretched the vertical radiating element way out of resonance, then restored resonance by shortening the radials. This is what … Continue reading A Deep Dive into the Antenna Called “Long Tall Sally”
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?
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?
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
Improving a Ground Tuning Unit – using binary coded inductance and capacitance
There are 10 types of people in this world; those who understand binary notation and those who don't. Some years ago I experimented with using a Ground Tuning Unit (GTU a.k.a. Artificial Ground) to replace radials/counterpoises on my field expedient vertical antennas. A GTU is simply a series L-C tuned circuit with a current sensor … Continue reading Improving a Ground Tuning Unit – using binary coded inductance and capacitance
Venturing Outside the Box with the End-Fed Half-Wave Antenna
So many words have been written about the popular End-Fed Half-Wave antenna that you would think it would be "settled science" by now. For several years I have been building EFHWs according to accepted wisdom, but my inquisitive mind always seeks to question why they are built that way and could they be improved? You … Continue reading Venturing Outside the Box with the End-Fed Half-Wave Antenna
Ham Radio Outside the Box 