OPEN BOX MFJ Wire Antenna 160m-10m G5RV dipole

OPEN BOX MFJ Wire Antenna 160m-10m G5RV dipole

This antenna generally requires the use of a suitable matching network (antenna tuner) since the SWR of the G5RV is almost certainly not 1:1 on any band. The use of a tuner will guarantee maximum performance from solid state exciters. The G5RV is a balanced antenna that is fed by an unbalanced coaxial line. This feed system causes unwanted parallel RF currents to appear on the shield of the coaxial feedline. A choke type balun should be used with this antenna to eliminate or reduce the undesirable parallel feedline currents. Failure to use a choke balun may result in RFI, RF feedback, or other symptoms of RF "in the shack".

The Balun Requirement section describes how to construct a choke balun for this antenna.

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