Articles written by: Mark Haverstock, K8MSH

grey line on a geochron atlas
Technical Articles

Gray Line: The Twilight Zone of Radio Propagation

Imagine for a moment that you’re sitting in your ham shack, coffee in one hand and microphone in the other. It’s either just before sunrise or just after sunset, and […]

Coaxial Dynamics Dry Dielectric RF Dummy Load
HAM Radio 101

Ham Radio 101: Dummy Loads—Smart Idea

Several options available at DX Engineering, including the new DXE 1,500W 1-54 MHz Dry Dummy Load You may have heard the term “dummy load” before. While the name might give […]

geochron world clock picture display
Products & Product Reviews

Ham Radio Equipment Spotlight: Geochron—What’s Happening in Your World?

Q. What timepiece did Ronald Reagan give to Mikhail Gorbachev as a gift? Which global time display appeared in the movies “Clear and Present Danger,” “Patriot Games,” and “The Hunt […]

dx engineering maxi-core 20 feedline choke, inside
Technical Articles

Ham Radio Tech: What Does a Common-Mode Choke Do?

You’re hosting a party and someone arrives who probably wouldn’t have made your invite list. Maybe someone brought them along, your XYL said you had to invite them, or they asked […]

ZOOM meeting screenshot of a ham radio club
Tools

Who’s Zoomin’ Who? Making the Most of Online Video Conferencing in Amateur Radio

The Queen of Soul may have been way ahead of her time. “Who’s Zoomin’ Who” is the title of a 1985 Aretha Franklin tune. In the context of the song, […]

ham radio class in session
HAM Radio 101

What’s the Best Way to Study for the Ham Radio Test?

Whether you’re interested in emergency communication, electronics, or just want to talk to people worldwide, passing the ham radio test is the first step. To get licensed, you need to […]

DXE USB Isolation Transformer
Products & Product Reviews

New Amateur Radio Product Overview: DX Engineering USB Isolator

Most of us think about antennas and radios when it comes to protecting our stations, but what about computers? They’ve also become an indispensable part of on-the-air operations, especially for […]

dipole wire antenna building illustration
Antenna Tech

Ham Radio Tech: Linear Loading—Long Wire in a Short Space

For some amateur radio operators, putting up a full-length HF dipole is not always feasible. With today’s postage-stamp-sized lots, some hams can only dream of installing a dipole for 80 […]

Powerpole connection cutaway view
DC Power

Ham Radio Tech: Anderson Powerpoles®—Putting It All Together

One of the really annoying things about ham radio is the sheer number of different cables and connectors out there. With USB alone, there are four or five common ones, […]

close up of an icom S-meter
Technical Articles

Ham Radio Tech: RST vs. S-Meter Signal Reports—Which Is Better?

Everyone wants to know how their signal sounds on the air. Often, the best way to find out is to get a signal report from other ham radio operators. The […]