What is the best way to match the very high impedance of an End-Fed Half-Wave antenna to the 50 ohm impedance of a transceiver? There are various ways to do this but this week's post is going to focus on just two - a 49:1 impedance transformer (or UNUN if you prefer) and an L-network. … Continue reading EFHW matching: 49:1 Impedance Transformer or L-Network?
Category: QRO
How to Take Backpack Portable Radio to the Next Level
I know many hams like to operate from inside the comfort of their vehicles. I do too, but only in the depths of winter. Winters in Canada and most of the northern states can often be very challenging so some form of shelter becomes essential. But, in the warmer months (both of them, hi hi) … Continue reading How to Take Backpack Portable Radio to the Next Level
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
Surviving the Great Solar Storm of May 2024
We just can't win when it comes to propagation conditions. When the Sun is quiet during the bottom of the 11-year solar cycle, HF propagation conditions are challenging. So we all look forward to the days when the Sun is active and the bands are open again. But when we hit the top of the … Continue reading Surviving the Great Solar Storm of May 2024
A Versatile Solution for Backpacking with the QRP Labs QMX
Solar cycle 25 is rapidly approaching its peak. That means propagation conditions are very favorable for QRP operations again. Add to that the ever increasing popularity of outdoor operating programs like Summits on the Air (SOTA) and Parks on the Air (POTA) and there has never been a better time to hit the Big Blue … Continue reading A Versatile Solution for Backpacking with the QRP Labs QMX
Can a Manual L-match Get the Job Done?
Or can it be made just a little bit better? In part 3 of my manpack series of posts I discussed how and why I replaced a perfectly good LDG Z-11 Pro autotuner with a home-made manual L-match. To summarize, the autotuner was doing a great job but was using too much space inside the … Continue reading Can a Manual L-match Get the Job Done?
Building a Manpack – Part 3, the QRO Rig
As in Parts 1 and 2, let me define what I mean by "manpack". My manpack is a manually transportable, rapidly deployable, field expedient complete radio station for operating while pedestrian mobile or pedestrian stationary. Why QRO? I have to admit, I love QRP; I started my HF career as a QRP operator and I … Continue reading Building a Manpack – Part 3, the QRO Rig
Ham Radio Outside the Box 