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, ...

The 320-ton rotating curtain antenna in Moosbrunn, Austria, was dismantled this week as part of the decommissioning of the historic shortwave radio site, according to reporting from the Austrian ...

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 ...

This fallen tower is part of a 44-degree rhomboid antenna that broadcasts to Europe. The vast Okeechobee, Fla., antenna farm of privately-owned WRMI, which transmits programming to the world via ...