Measuring the performance of antennas in absolute terms that can involve a lot of expensive equipment and specialized facilities. For practical applications, especially when building antennas, ...

Ampegon says it is about to deliver and install its first rotatable shortwave high-power array antenna on the North American continent. The system, which will be installed WBCQ in the United States, ...

Dublin, Oct. 26, 2022 (GLOBE NEWSWIRE) -- The "Global RF Antenna Market, By Type (Ultra Long Wave Antenna, Longwave Antenna, Medium Wave Antenna, Shortwave Antenna, Ultrashort Wave Antenna, Microwave ...

The circuit presented here illustrates the fact that in spite of all kinds of new component and technology, it is still possible to design useful, and interesting, circuits. The circuit is based on ...

Building antennas is a time-honored ham radio tradition. Shortwave antennas tend to be bulky but at VHF frequencies the antenna sizes are pretty manageable. [Fjkaan’s] 2 meter quadrifilar helicoidal ...