Loop antenna amateur
Basically there are 4 different kinds of loop antennas interesting to the amateur radio operator: VERTICAL LOOP; HORIZONTAL LOOP; SMALL TRANSMITTING .
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1 Nov Build a /80 Meter Magnetic Loop Antenna - Part 1 Posted in Radio Hacks Tagged amateur, antenna, dipole, DX, ham, HF, loop, magnetic.
Small Transmitting Loop Antenna Calculator
W4OP Loop Antenna
Description:They are mainly used at frequencies above 3. Increasing that phase difference by increasing the size of the loop has a large impact in increasing the radiation resistance and the resulting antenna efficiency. In addition to having a lower angle of radiation than the horizontally polarized loop, they also reduce the local QRM stations within about miles by a couple of S-Units. They can be viewed as a folded dipole deformed into an open shape. I cut a 6 foot section of wire out of the loop, half-way around the 40m loop as a daring experiment to give me a halo dipole for 80m. However, small loops become practical at lower frequencies where wavelengths are tens to hundreds of meters long, or greater, and full-size loops the most efficient and half-wave straight-wire antennas next-most efficient become infeasibly large.