Baluns and Common-Mode Impedance: How Much is Enough?
There is a lot of interest in baluns these days—that’s good. There is also a lot of confusion about baluns these days—that’s not so good. This article starts by defining […]
There is a lot of interest in baluns these days—that’s good. There is also a lot of confusion about baluns these days—that’s not so good. This article starts by defining […]
Next to wires, antennas made of aluminum tubing and rod are the most common type of amateur radio antenna construction. There is a wide range of high-quality aluminum alloy available, […]
Editor’s Note: Thanks especially to Hamgallery.com, managed by Tom Roscoe, K8CX, for several of the images used here. There are many, many more wonderful photos and graphics on his website […]
(Thanks to the ARRL for sharing Figures 1-3 from the article “The Beverage Antenna, 100 Years Later” in the November 2021 issue of QST—see the reference list below.) There is […]
In an earlier OnAllBands article (“What Is Ferrite, Anyway?”) I explored the use of ferrite cores for chokes, baluns, and other amateur radio applications. In recent years, ferrite-core components like […]
If you have ever stood at the base of a tower, looking forlornly upward, wondering “What’s WRONG with that [adjective] rotator?!” you are not alone. That simple piece of gear […]
“End-fed” antennas, in particular the “End-Fed Half-Wave” (EFHW), are all the rage these days, particularly for portable operation. Throw a string over a tree branch, haul up one end, connect […]
No, not THAT kind! Sendin’ code againJust can’t wait to be sendin’ code againThe life I love is runnin’ pileups with my friendsAnd I can’t wait to be sendin’ code […]
Operating from a temporary setup—in a park, on a summit, from a rare grid or county, or for a special event—has become very popular. This is a great thing for […]
The contest calendar is just packed with DX contests! And so are the bands—you can hear “CQ Contest” every weekend, on phone and CW and digital modes. You can enter […]