More about antenna (104)

1-07-1992 | Most VHF/UHF amplifiers for use with a symmetrtcal antenna (such as an open or closed dipole) have a balun at the input. A balun (short...

1-07-1992 | This converter enables long-distance (DX) reception of AM or SSB stations in the 27-MHz citizens' band (CB) on a short -wave or medium wav...

1-07-1992 | The original experimental QTC transmitting loop antenna was built in late 1990, tested immediately, and details were published in the June...

1-03-1992 | Older readers will remember the original flat-top antennas of the 1920s, 30s and 40s festooning battleships and other warships, ocean-goi...

1-02-1992 | Powerful transmitters operating on medium and long waves may cause considerable interference in the reception of short-wave signals. A hig...

1-12-1991 | This simple to build antenna booster offers a gain of some 20 dB over a frequency range that covers the VHF FM radio band and the whole of...

1-11-1991 | The quadriform is an experimental 3.5 MHz transmit/receive antenna of mini dimensions, consisting of four high-grade robust ferrite rods i...

1-06-1991 | The quest for ever reduced sizes of efficient HF transmitting antennas is a compulsive exercise which one has great difficulty in dropp...

1-05-1991 | The starting point for this design is the well-known 5/8-lambda whip antenna with base coil as used for mobile communications in the 2-...

1-01-1991 | Waste not, want not! Radio amateurs are a breed of electronics enthusiasts who like to see every milliwatt of their precious RF power arri...