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Does anyone know where I can find some construction plans for a "wheel
antenna" in the 33cm band? Matt |
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#2
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Does anyone know where I can find some construction plans for a "wheel
antenna" in the 33cm band? Depends which variant you're looking for. One "wheel" antenna type is the halo, which is basically a halfwave dipole bent into a circle, with the ends an inch or two apart (the distance is an important factor in the tuning), usually fed via a gamma match. Google for "2-meter halo" (a common variety) and rescale the design as necessary. Another variant is the "big wheel", which is three full-wavelength loops (each bent into a third-of-an-apple-pie shape) fed in parallel, with a hairpin inductor shunted across the common feedpoint. Older editions of the ARRL VHF Handbook contain plans; I don't know about the current edition. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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