Technical Articles

assortment of ferrite chokes
Technical Articles

What is Ferrite, Anyway?

Ferrites are made from oxides of iron, cobalt (Co), barium (Ba), and strontium (Sr).  The type of ferrite most useful to hams are soft ferrites. (The hard ferrites are good […]

an assortment of handheld icom ham radio HTs
Technical Articles

Video Tech: Establishing Hot Spots for Your D-Star Radio

Ken, KA8ODA, is DX Engineering‘s digital mode specialist. In this video, he takes you through the hows and whys of establishing a hot spot in your home. “What a hot […]

dx engineering Fiberglass antenna tubing
Technical Articles

Tips for Handling Fiberglass Tubing for HAM Radio Applications

Many amateur radio projects use fiberglass tubing and there are some precautions you should take when handling it. When the tubing arrives – before you open the box – be prepared. There […]

Amateur Radio Frequencies and Bands illustration
Technical Articles

Guide to Amateur Radio Frequencies and Bands

Many hams equate frequencies and bands with colloquial usage. Therefore VHF is 2 meters, specifically 144 to 148 MHz, and HF is 160 through 6 meters, just like on our […]

copper strap for grounding electrical equipment
Technical Articles / Weatherproofing and Grounding

Copper Strap vs. Copper Braid in Amateur Radio Grounding

Tinned-copper braid has been around for a long, long time. It’s been used in many grounding applications because of its flexibility and ease of soldering. It’s great for grounding radio […]

Lightning Protector for coaxial cable
Technical Articles / Weatherproofing and Grounding

The Importance of Weatherproofing Lightning Protectors

Most amateur radio operators (hams) know they should weatherproof any coaxial cable connections that are outdoors to prevent moisture entering your coax connectors. However, many hams don’t realize you must […]

Ham Radio manual antenna switch
Technical Articles

Coax Switches: What to Consider When Buying a Coax Switch

“Wow! I just got another transceiver. I’m gonna need a coax switch. I’ll get a used switch off the web.” Bad idea… Used coax (coaxial) switches come in all conditions. […]

DX Engineering Maxi_Core balun
Technical Articles

Polarity on BALUNS Explained!

Q: If RF is a high frequency AC signal, why are there plus and minus signs on a balun? A: Keep in mind that we are usually connecting a ‘BALanced’ […]

base of a ham radio tower with radials installed
Antenna Tech / Technical Articles

Tips for Mounting a Vertical Antenna Above Ground

We received a question from a Ham in Oklahoma about mounting a Cushcraft R8. Although our answer was aimed at the Cushcraft R8, the information can be used for other vertical […]

illustration of a morse code straight key
Technical Articles

Why is CW (Continuous Wave) Still Around?

CW stands for Continuous Wave. In CW communications, a continuous carrier is transmitted as long as the key contacts are closed. By making and breaking the contacts into specific patterns, characters […]