Collinear Antenna Calculator
By 3G-AerialThe collinear antenna, or Marconi-Franklin antenna, is an omnidirectional, high-gain antenna composed of in-phase half-wave dipoles aligned vertically. By using quarter-wave transmission line segments, it maximizes gain at a low horizon angle, outperforming a half-wave dipole. Adding segments increases gain but narrows bandwidth. A popular DIY version, the CoCo antenna, uses half-wave coaxial cable segments connected by non-radiating transmission lines. Built with stable velocity factor cables, a matching quarter-wave sleeve balun, and ferrite rings for attenuation, the antenna achieves performance comparable to commercial models.
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You will find this resource in 2 categories on our links directory. The title of the main category is Collinear and it deals mainly with Collinear antennas . The link to this resource has been on our site since Friday Nov 8 2024, and it has been followed 274 times. So far it received 12 votes for a total score of 5.09/10
Last updated: 2025-08-22
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