Category Archives: CB Radio Vertical Antennas

DUAL DDRR C0-Phased Citizens Band HF Antenna Array

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Barracuda-Base-Antennas

In layman’s terms a DDRR is just a short vertical monopole (vertical post) attached to a transmission line tuned by a reactance (ring plus vacuum capacitor). The reactance of the capacitor is transformed by the transmission line and will under specific conditions (length, value of the capacitor, etc.) make the vertical post resonant. Slight variations of the capacitor will lengthen or make the transmission line “shorter” and allow tuning of the antenna on a certain range. Continue reading DUAL DDRR C0-Phased Citizens Band HF Antenna Array→

SLIM JIM 11m 27MHz ANTENNA PROJECT

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Slim Jim 11m CB Antenna

SLIM JIM 11m ANTENNA PROJECT Several designs rolled into one Edited and condensed from various designs http://www.hamuniverse.com/slimjim.html Page with other bands information and videos HERE The Slim Jim Antenna The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable Continue reading SLIM JIM 11m 27MHz ANTENNA PROJECT→