9:1, 4:1, 1:1 or None:None?

When using a Random Wire antenna (also known as an End-Fed Random Wire - EFRW), the impedance at the feed end of the wire is usually higher than 50 ohms. In order to maintain a good match with a transceiver some form of impedance transformation is required to minimize SWR losses in the antenna system. … Continue reading 9:1, 4:1, 1:1 or None:None? →

A 200ft Wire Antenna Up Zero Feet – How Does it Perform?

One of my local stores was offering 100ft reels of 16ga insulated wire on sale for a good price. I have bought this wire before and was very pleased with its flexibility - an important factor for field portable use where the antenna is subjected to constant winding and unwinding. The wire extends 200ft across … Continue reading A 200ft Wire Antenna Up Zero Feet – How Does it Perform? →

Ditch That Automatic Tuner!

I was on the brink of pulling the trigger on the purchase of a new automatic antenna tuner for my portable rig recently, when something unexpected happened that slammed the brakes on the acquisition. For a few weeks I have been operating my Yaesu FT-891 with an LDG Z-11 automatic antenna tuner, but there are … Continue reading Ditch That Automatic Tuner! →

How Does a Ground Tuning Unit Work?

I have spent many hours in my reclining thinking chair, posting ideas on the back of my eyelids while contemplating this very question. How indeed does a Ground Tuning Unit (GTU, aka Artificial Ground) actually work? I have a fairly reasonable comprehension of the theory behind antenna tuners, but tuning an entire planet? Now that's … Continue reading How Does a Ground Tuning Unit Work? →

The NVIS Illusion

I don't think there is any subject that is so misunderstood by hams as NVIS. I hope I can help by sharing some of what I have learned that may dispel some of the myths. NVIS is an abbreviation of Near Vertical Incidence Skywave. There is no such thing as a NVIS antenna. The term … Continue reading The NVIS Illusion →

Simplest Way to Guy a Telescopic Fiberglass Antenna Pole

There are a lot of YouTube videos showing different ways to support a fiberglass antenna pole, none of which seemed to meet my needs which are fairly basic: rapid deployment, lightweight and uncomplicated. So I devised my own method that I hope you will find interesting. Some hams pound a long piece of angle iron … Continue reading Simplest Way to Guy a Telescopic Fiberglass Antenna Pole →

Ham Radio & the Art of Bushcraft

Operating a radio in the great outdoors can be as simple as parking your vehicle, pulling a radio out of your pack, attaching an antenna to the top of the driver's window and keying up. I have done that myself in the depths of winter when it's too darn cold to really get outside and … Continue reading Ham Radio & the Art of Bushcraft →

How to Use a Semi-Automatic Antenna Tuner

There are manual antenna tuners and there are automatic antenna tuners - but what is a semi-automatic antenna tuner? I'll explain in a moment, but first a bit of background. For years I have relied on resonant antennas for field portable radio operations. Why carry any kind of tuner around if you don't have to? … Continue reading How to Use a Semi-Automatic Antenna Tuner →

A Surprise New Field Portable Antenna

My experiments to find a new antenna to use for field portable operations have been taking me in several directions. My neighbors must wonder what I am up to. Almost every day I have been out in my back yard erecting all kinds of strange wires strung up on tall poles or launched into trees … Continue reading A Surprise New Field Portable Antenna →

Delta Loopy Ideas

It's Spring in Southern Ontario. Maybe. The weather in these parts is highly unpredictable. Temperatures have been above freezing during the daytime and the snow is almost gone. But maybe it'll be back. Who Knows? Whatever happens I have been taking advantage of the good weather for some antenna planning. Antenna planning to me means … Continue reading Delta Loopy Ideas →