enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Shortwave broadband antenna - Wikipedia

   en.wikipedia.org/wiki/Shortwave_broadband_antenna

   An ideal “broadband” shortwave antenna would work continuously across much of, if not all of, the shortwave spectrum with good radiation efficiency and minimal compromise of the radiation pattern. Most practical broadband antennas compromise on one of the above: Either they only work on a few relatively narrow slices of the HF radio ...

3. Shortwave radio receiver - Wikipedia

   en.wikipedia.org/wiki/Shortwave_radio_receiver

   Modern portable shortwave radio receiver with digital frequency display and keypad for direct frequency entry. A shortwave radio receiver is a radio receiver that can receive one or more shortwave bands, between 1.6 and 30 MHz. A shortwave radio receiver often receives other broadcast bands, such as FM radio, Longwave and Mediumwave.

4. Reception report - Wikipedia

   en.wikipedia.org/wiki/Reception_report

   Include information, also, about how well the signal was received. For medium-wave reports, an indication of signal strength and any interference (co-or adjacent-channel interference, with identity of interfering station if possible) is usually sufficient. [1] International shortwave broadcasters are familiar with the SINPO code: Signal strength

5. Radio masts and towers - Wikipedia

   en.wikipedia.org/wiki/Radio_masts_and_towers

   For transmissions in the shortwave range, there is little to be gained by raising the antenna more than a half to three quarters of a wavelength above ground level, and at lower frequencies and longer wavelengths, the height becomes infeasibly great (greater than 85 metres (279 ft)). Shortwave transmitters rarely use masts taller than about 100 ...

6. Shortwave broadcasting in the United States - Wikipedia

   en.wikipedia.org/wiki/Shortwave_broadcasting_in...

   Shortwave broadcasting in the United States allows private ownership of commercial and non-commercial shortwave stations that are not relays of existing AM/MW or FM radio stations, as are common in Africa, Europe, Asia, Oceania except Australia and Latin America. In addition to private broadcasters, the United States also has government ...

7. Curtain array - Wikipedia

   en.wikipedia.org/wiki/Curtain_array

   Curtain arrays were originally developed during the 1920s and 1930s when there was a lot of experimentation with long distance shortwave broadcasting. The underlying concept was to achieve improvements in gain and/or directionality over the simple dipole antenna, possibly by folding one or more dipoles into a smaller physical space, or to arrange multiple dipoles such that their radiation ...