Technical Articles

Technical Articles

Using Transformers for Impedance Matching vs. Isolation

Transformers for Impedance Matching One of a transformer’s important functions is impedance transformation. Impedance transformation is just changing the ratio of voltage-to-current in one winding to a different ratio of […]

Clifton Labs / Technical Articles

Audio Transformer Measurements and Modeling

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) This page presents […]

Technical Articles

Guide to Low-Power Contesting (Part 2): Techniques and Tips on Making QSOs

In Part 1 of our series on low-powering contesting, we looked at the basic equipment you’ll need. Today, let’s touch on a few tips on competing, contest resources, and opportunities […]

Technical Articles

Guide to Low-Power Contesting (Part 1): Getting Started

Field Day was fun, wasn’t it?  Maybe you’re thinking, “I can do that from home!” And so you can—this discussion is about how to have some success with a modest […]

Technical Articles

What To Look For in Your First Mobile Rig

After getting a license, there are so many things to learn! One of the biggest (and the most fun) is what you learn as you choose your radio. This article […]

Technical Articles

What is a Repeater and How Do You Use One to Communicate?

Want to get the best possible coverage in a marginal location, like inside a building or down in a valley? A repeater system can rebroadcast your transmitted and received signals […]

Technical Articles

DXing on the VHF+ bands: Classic Skills on New Frontiers

Most Hams associate the term “DX” with the HF bands. It’s understandable. After all, as conventional wisdom states, the HF bands allow international, global communication, while the VHF bands are […]

Technical Articles

Building a Yagi Antenna? Why You Should Consider a Hairpin Matching System

For Yagi antenna do-it-yourselfers, one of the most important and problematic steps in the building process is deciding on the best method of matching the feedpoint of a low-impedance Yagi […]

Technical Articles

Guide to Choosing the Right Mobile VHF/UHF Antennas and Mounts

You’ve got a mobile radio and separation kit. You’re ready to begin installation. Now comes the most important question—where do I mount the antenna? Sometimes I think it’s a conspiracy […]

Technical Articles

Setting Up Multiple Antennas? 4 Tips on Avoiding Interference

Whether you’re operating at Field Day or a multi/multi contest station, one of the biggest problems is too many stations in a small area. So how do you control interference […]