coaxial cable.

coaxial cable.

Antennas : Baluns

• Build your own HF balun - A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cable. From the RF point of view, the shield can be modeled as two conductors, the internal shield (the real shield, this is, ground) and the external shield, who is really far to be ground. In this way, your dipole has 3 arms, the two from the dipole and the coaxial cable shield (external face)
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• The Bazooka vertical  ^{updated  pop} - This is a deviation from the wonderful antenna the Double Bazooka. The Vertical Bazooka, is made entirely from RG-8U coaxial cable.
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• Coaxial feeder or RF coax cable - An overview of coax cable often called coaxial feeder or RF cable, used to feed antennas and deliver radio frequency power from one point to another
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• A model of the W2DU 1:1 choke balun - Notes on making the W2DU choke balun by placing several ferrite sleeves around a coaxial cable.
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• 6 m JPole Antenna - Based on original G2BCX design this J-Pole antenna for the six meter band is made with a homemade ribbon cable. The antenna shown in this article includes a coaxial cable choke feed to remove RF currents from flowing on the outer of the cable.
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• Cebik Moxon Rectangles - The Moxon Rectangle is growing in popularity as a compact 2-element array that approaches a full-size 2-element in gain but with a far superior front-to-back ratio and a direct match for the standard 50-Ohm coaxial cable.
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• Loss Calculator - Calculate power loss depending on coax cable you use
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• How to assemble a BNC connector - How to install a BNC connector on a coaxial cable like the ELSPEC1030AF / HPF195RG and 58C/U cables
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• RF Cable Testing - The cable testing approaches discussed in this article gives an idea about the electrical characteristics of a coaxial cable. Velocity of Propagation, Characteristics Impedance, Return Loss Measurement and more
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