If you are a hacker, you might consider ham radio operators as innovative. Most people, however, just see them as cheap. So it is no surprise that hams like [jmharvey] will build an antenna analyzer from a DDS module and an Arduino instead of dropping a few hundred dollars on a commercial unit. As he points out, you probably only need an analyzer for a day or two while you set up an antenna. Unless you are a big time antenna builder, the unit will then sit idle on the shelf (or will wind up on loan to hams even cheaper than you are).
The design is rooted in another proven design, but changed to take advantage of parts he happened to have on hand. Although the build is on a universal circuit board, [jmharvey] used Eagle to lay out the circuit as though it were a PCB. Since placement can be important with an RF circuit, this isn’t a bad idea. It’s always easier to move stuff around on the screen than on the perf board…..
Read Full Article: Link
SUPER SKYRIDER™ 9400 Mobile HF NVIS Magnetic Loop Antenna Stealth 9400 Mobile HF NVIS Magnetic Loop Antenna has been developed to address the emerging... Read more
SDRplay Raspberry Pi Bringing the Radio Spectrum to your computer: In this video we show the process of downloading an SD card image for a Raspberry P... Read more
Amateur Radio Parity Now that there is Amateur Radio Parity Act of 2015 legislation in both chambers of the US Congress, the League has a combined web... Read more
by DAVID DICKINSO You can be thankful that we bask in the glow of a relatively placid star. Currently about halfway along its 10 billion year c... Read more
In keeping with its theme, “Serving the Community,” Hamvention® 2018 is offering an opportunity for Amateur Radio groups to display the communication... Read more
NEWBURGH — “When all else fails, ham radio works.” Members of the Orange County Amateur Radio Club will be putting this motto to the test as they ta... Read more
HF Vertical Antenna • NO GROUND SYSTEM OR RADIALS NEEDED • RUGGED CONSTRUCTION • INSTANT BAND CHANGING • SLIM LOW PROFILE SILHOUETTE This multiband ve... Read more
The Earth is being battered by a huge solar storm, which could disrupt the power grid and GPS as well as letting people see beautiful auroras. #Aurora... Read more
“A team of Columbia Engineering researchers has invented a technology—full-duplex radio integrated circuits (ICs)—that can be implemented... Read more