What is Cty.dat?
Cty.dat, or sometimes wl_cty.dat, also known as a “country file.” This file contains the lookup information that translates prefixes of callsigns into country and/or zone multipliers. Software uses this file, […]
An Amateur Radio Blog by DX Engineering Recent Posts
HAM Radio 101
Events
DX Engineering Puts Strong Support Behind the 2019 Pitcairn Island VP6R DXpedition
When the VP6R Pitcairn Island DXpedition team sets up camp in the South Pacific this October, they’ll be unpacking and installing loads of gear from DX Engineering, including a custom-designed […]
HAM Radio 101
Biography: Jack Smith, K8ZOA (SK)
Some Amateur Radio operators leave behind such a legacy of hard work, high-level thinking, and pure devotion to the advancement of the hobby that their call sign will never fade […]
HAM Radio 101
Word of the Day: Ferrite–What it is and Why You Need It
If your station suffers from radio frequency interference (RFI), today’s Word of Day, ferrite, should become an immediate and permanent part of your Ham Radio vocabulary. Different mixes of ferrite—a […]
HAM Radio 101
Word of the Day: COMPACTenna
From time to time, our Word of the Day feature will highlight an innovative product from the world of Ham Radio. Today, we look at COMPACTenna’s patented line of small, […]
Technical Articles
Inductor Selection: Manufacturers Part Numbers
Amateurs have long used the Amidon (www.amidoncorp.com) part numbering system for ferrite and powdered iron toroid cores. For powdered iron cores, the Amidon part number begins with a T and […]
Technical Articles
Inductor Selection: Design Sensitivities
When you start designing your own circuits, one of the biggest challenges is not obtaining component values, but choosing from many different types of components all having the same value! […]
Clifton Labs
Inductor Selection for an AM Band Reject Filter
(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).) One project I’ve been […]
Events / Photo Galleries / Uncategorized
It’s All in the Cards: Tonga QRV
Every month, DX Engineering features QSL cards from our team members’ personal collections. To highlight upcoming DXpeditions, we’ll be displaying a few of our favorite cards along with details about […]
HAM Radio 101
What is the Straight Key Century Club (SKCC)?
Today’s Word of the Day column focuses on another organization committed to keeping CW alive and clicking—the Straight Key Century Club (SKCC). Founded in 2006, the group boasts close to […]
