I have two main rigs for operating outdoors, mainly for Parks on the Air (POTA) activations. I dream that one day I will have three, but my order for a QRP Labs QMX is on a never-never delivery list - well maybe one day! Rig number 1 is a Yaesu FT-891 which, although capable of … Continue reading A Simple DIY “Unikeyer” Based on the K3NG Design
Category: QRP
An Upside Down Antenna?
What do you call an end-fed three quarter wave antenna with a quarter wave counterpoise? Or is it an end-fed full wave antenna with a folded quarter wave section? Or maybe even an end-fed half wave fed with ladder line? Here are some hints. It doesn't need any ferrite toroidal cored transformers; so no hysteresis … Continue reading An Upside Down Antenna?
How to Prep for Radio Camp
What is a "Radio Camp"? Put simply, a Radio Camp is a rapidly deployable temporary setup established for the primary purpose of operating ham radio outdoors. It is not quite the same as a traditional vacation or RV camp. A Radio Camp might be setup for a very short period (e.g. for the duration of … Continue reading How to Prep for Radio Camp
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?
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!
The Hidden Secret in CW’s PARIS Standard
Sending speed in Morse Code (CW) is measured in words per minute, but how long is a "word"? In the English language the simplest word is the indefinite article "A". A contender for the longest word may be the name of a village in Wales called Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch. So the word PARIS has been chosen to … Continue reading The Hidden Secret in CW’s PARIS Standard
A Born Again Miracle Whip
About 20 years ago a Canadian company, based in Quebec, produced a compact QRP antenna called the Miracle Whip. It was a really good piece of engineering that relied on the principle that a short whip has capacitive reactance that can be cancelled by feeding it through an inductive reactance. Remember, resonance occurs when capacitive … Continue reading A Born Again Miracle Whip
So, is the VP2E Antenna Directional Enough?
Another fine day in February in Southern Ontario saw me out on a beach on the southern shore of Georgian Bay testing my unbalanced version of the VP2E antenna. In the previous post I shared my observation, from EZNEC modeling and a trial POTA activation, that moving the support mast towards the feedpoint end of … Continue reading So, is the VP2E Antenna Directional Enough?
The VP2E – A Strange (But Proven) Antenna
As an avid POTA activator I was quite excited to come across a new-to-me wire antenna that is rapidly field deployable, fairly stealthy, directional and which has some gain. I would like to thank Germany-based SOTA operator Ed Durrant DD5LP, G8GLM, VK2JI for introducing me to the VP2E. As is my custom, I read Ed's … Continue reading The VP2E – A Strange (But Proven) Antenna
20m Band – The Long and the Short of it
Another recent POTA activation turned out to be a useful learning experience for me. It was a moderately cold February day. The temperature had dipped to -20degC overnight, but by afternoon it had risen to a relatively balmy -7degC. It was also the occasion of the Polar Bear QRP Ops February Polar Bear Moonlight Madness … Continue reading 20m Band – The Long and the Short of it
Ham Radio Outside the Box 