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 […]
An Amateur Radio Blog by DX Engineering Articles written by: Ward Silver, N0AX
Clifton Labs / Technical Articles
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
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 […]
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
How to Put up a Field Day Tower Safely
Field Day (June 22and 23, 2019) is almost here and the planning is underway — for radios, tents, food, antennas—and how to keep them up! You may be lucky and […]
