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MFJ Mobile monoband HF Whip-Screwdriver Antennas-Radioworld

The advantage of the low Q antenna is its efficient operation across a broad bandwidth, so a full length antenna is simple and effective and large, and great for home shack use.

When an antenna is physically shortened for the desired operating frequency and a loading coil is added to help it resonate at that desired frequency anyway, the Q factor is increased.

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Screwdriver Antenna Amateur Radio

With the bowling ball suspended in air you could easily make up for the lost energy each cycle by providing just a tiny little push at a convenient spot in the swinging cycle, perhaps just as the ball peaks in height and begins downward along its arced path.

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Screwdriver Antenna : Screwdriver antenna makers - The gammadatalandauer.info

The energy is lost slowly.

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Posted by 19.01.2019

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