The G5RV multiband antenna is a very popular design on the HF bands. The “common” G5RV is configured as a 3/2-wave dipole on 20 meters, and works as either a shortened dipole, or a collinear-fed long wire on the other bands. In this configuration, the overall length is 102 ft, with a 28 to 34
The Beverage (or “wave”) antenna was invented in the early 1920s by Dr. Harold H. Beverage. It was first discussed in a paper titled “The Wave Antenna – A New Type of Highly Directive Antenna” written by Beverage, Chester W. Rice and and Edward W. Kellogg for the journal of the American Institute of Electrical
This is a portable dipole I built for 20 meters. It works great. The SWR is really low. I would not recommend this for permanent use just because it is not build like a rock. It will do just fine for portable in the field operation. It is a great backpacking antenna. I only used
If you have any interest in antennas at all, fasten your seat belts and hang on to your hats, because what you are about to read here is going to blow you away. Conventional wisdom concerning antenna matching and resonating is about to be shattered and the principles revealed here might just be the start
Rhombic Antenna dimensions and plan for HF and VHF bands by N6JSX
A Quad antenna is a full wavelength conductor in the form of a square (or circle or diamond). It is actually two half wave dipoles spaced half wave length apart, bent at right angles at l/8th wavelength points and joined together. If the Quad is fed at either sides it is vertically polarized and if
The Adcock antenna has been used for a long time for RDF. It is basically an interferometer. When both of the two dipoles see exactly the same signal strength and RF phase, no signal is delivered to the receiver. This condition happens only when the signal source is equal distance from the two dipoles. As
You need this—traps with lower loss, higher Q, increased power-handling capability and four-band coverage! This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps. . Article published on QST, author and
Background: In the solar maximum years 28 MHz is full of DX stations, that can be worked with very simple equipment. However the fun will be even greater with a proper antenna. So I decided to build a 3 elm. yagi and took the design from ARRL’s: “Yagi Antenna Design” by W2PV. But I also
I’ve had good luck with an endfed antenna on 20 and 30 meters. Depending on available trees/supports I can arrange this antenna as an inverted vee, a sloper or a horizontal 1/2 wave. It functions an endfed zepp on 20 meters consisting of a 1/2 wave 20 meter wire (33′ 3″ long) endfed with a