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Scanner / Receiver Antennas - For discussion of any type of receiving antenna used by a scanner or receiver base, mobile or handheld.

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Old 10-12-2017, 11:08 PM
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Default Curley Q's

I've seen some antennas with Curley Q's on them. Is that just psychological or does that help?
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Old 10-12-2017, 11:44 PM
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It definitely helps. Basically, it makes a short antenna resonant at its operating frequency.
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Old 10-13-2017, 3:41 PM
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Curley Q's, think of them as loading or matching coils that make the two or more straight antenna parts work together. Also known as open coil antennas.
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Old 10-13-2017, 6:30 PM
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Most curly Qs are found on stacked colinear vertical antennas as the 1/4 wavelength phasing (90 deg phase shift) between radiators. As an example you might find a half wave over a half wave or 5/8 over 5/8 wave and an air wound 1/4 wavelength coil in the middle to place the top antenna in phase with the bottom. There are a few antennas out there that are a simple loaded 1/4 wave vertical and the loading coil is an exposed curly Q but those are not as polular these days.
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