More about antenna (99)

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...

1-12-1990 | The electronic antenna selector is intended to switch between two FM antennas by means of a legte signal.

1-11-1990 | This is the story of a very small experimental table-top HF transmitting/receiving loop antenna of simple, low-cost construction. The word...

1-10-1990 | For the reception of weak UHF-TV signals a good antenna is, of course, indispensable, but by itself it may not be enough. If that's the ca...

1-05-1990 | The ferrite rod antenna described here is a most unusual conception in as much as it covers the frequency spectrum from 125 kHz to 24 MHz...