Dipoles–A Domestic Secret Weapon
The dipole is the oldest antenna—Herr Professor Heinrich Hertz used a dipole in his 1888 experiments that confirmed Maxwell’s predictions of electromagnetic waves. The dipole (the word means “two voltage […]
The dipole is the oldest antenna—Herr Professor Heinrich Hertz used a dipole in his 1888 experiments that confirmed Maxwell’s predictions of electromagnetic waves. The dipole (the word means “two voltage […]
Operating portable is always a challenge, particularly with HF antennas that are usually close to the ground and quite a bit smaller than a full quarter- or half-wave. Verticals, especially […]
Once you get your Technician license, the next step is the General. Congratulations, you just earned access to almost every HF frequency amateurs have! (Techs, you have some 10 meter […]
It is not unusual to be able to hear the harmonics of a nearby transmitter, amateur radio or not. No signal is a perfect sine wave and it’s easy to […]
SummertimeOperatin’ is easySunspots jumpin’Your antenna’s up highThe openings switchThose bands just keep changin’The regions and seasonsTell you why(apologies to George Gershwin and DuBose Heyward) It seems like just a few […]
Portable operating—in parks, on islands, atop summits—has become delightfully popular over the past few years. It’s not hard to figure out why, either. You get to combine visiting new places, […]
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 […]