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, ...
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, ...
OTTAWA, Ontario — At the height of the Cold War, the BBC World Service, Radio Canada International and the Voice of America used high-power, multilingual broadcasts on the shortwave radio bands (1710 ...
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 simple little circuit can be used for AM, FM, and Shortwave(SW). On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna. It is further more designed to be used on ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results