Antennas 101: Do You Really Need an Antenna Tuner?
There is nothing more misunderstood or misrepresented in the world of ham radio than the antenna tuner. According to many, they’re an indispensable accessory for your ham shack and a […]
An Amateur Radio Blog by DX Engineering Technical Articles
Antenna Tech / Technical Articles
Clifton Labs / Technical Articles
Using Copper Tubing Windings on a Binocular-Core Transformer
It is often effective to use copper tubing as single-turn winding on a binocular-core transformer. The tubing has extremely low losses and minimizes leakage inductance which extends the transformer’s high […]
Clifton Labs / Technical Articles
Permeability and Ferrite Material
Since the article was written in 2008, other types of ferrite material have been introduced with different characteristics over the MF and HF frequency ranges. Type 31 has become popular […]
Technical Articles
Tips for Battery Replacement in Computers, Radios, or Lab Equipment
Due to the lower cost and better performance of non-volatile memory, it is now a common feature of microcontrollers. This reduces the need for batteries to provide backup power to […]
Technical Articles
How to Protect Wire from Ferrite
Before winding wire, particularly enameled wire, on a bare ferrite core, take steps to protect the wire from the abrasive ferrite’s edges and corners. If the core has an inside […]
Technical Articles
Ham Radio Outdoor Maintenance Tips (from the Ground Up)
My first Elmer was a laid-back guy. One of his philosophies about Ham equipment was, “If it ain’t broke, don’t fix it.” He was lucky most of the time, but […]
Technical Articles
CW Contesting (Part 2): Making QSOs for Real and Tips on Better Scores
In Part 1 of our series on CW Contesting, we looked at some of the basics of getting started. Today, we’ll delve further into making QSOs and tips on improving […]
Technical Articles
CW Contesting (Part 1): Getting Started
Most days, the CW bands are kind of quiet. But on certain days, suddenly there are stations tuning up, conducting short QSOs, and then at the top of an hour […]
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 […]
