Archive for December, 2016

From Contest University Chairman and DX Engineering Chief Operating Officer Tim Duffy, K3LR: I am proud to announce that student registration is now open for 2017 Dayton ConTest University (“CTU”) to be held all day on Thursday May 18, 2017 at the Crowne Plaza in Dayton, Ohio. Check out the NEW CTU Website: https://www.contestuniversity.com/  Eight different […]


There is a small bit of homework required to establish the turning radius of an antenna. You have to figure out the hypotenuse of a right triangle. For this exercise we are using the following definitions for the formula: R = Turning Radius B = Boom length from center of the mast L = Longest […]


A well-equipped ham shack is chock full of transmitters, receivers, (or at least transceivers), antenna tuners, coaxial switches, radio accessories and all manner of electronic equipment. All of these things have one thing in common: cables. As you look around your shack, there are cables everywhere. There are antenna cables, power cables, control cables, test […]


Do you want a really hi-fo mobile installation? There are other speaker options available, depending on your preference and budget. We’ll take a look at those below. Speaker Microphone Many VHF and UHF mobile operators use a “handie-talkie” type radio connected to a normal mobile antenna in their vehicles. One of the most common accessories […]