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Here's a simple and elegant solution to keeping common mode currents off your coaxial cable feed line.
According to Australian radio amateur Peter Parker (VK3YE), this basic choke "balun" only uses a few materials:
7 meters/22.96 feet of RG-58 coaxial cable.
75mm/2.95 inches diameter piece of PVC tubing.
A few connectors.
Be sure to weatherproof the assembly.
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Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).