Question
Which of the following describes a G5RV antenna?
Answer Options
- A) A wire antenna center-fed through a specific length of open-wire line connected to a balun and coaxial feed line
- B) A multi-band trap antenna
- C) A phased array antenna consisting of multiple loops
- D) A wide band dipole using shorted coaxial cable for the radiating elements and fed with a 4:1 balun
Correct Answer: A
Explanation
The G5RV antenna is a classic, multi-band \text{HF} antenna designed by Louis Varney, G5RV. It is characterized by a specific length of flat-top wire antenna that is matched using a calculated length of balanced feed line (ladder line) to provide a usable impedance on multiple bands, which is then fed via coaxial cable.
The G5RV antenna is specifically a wire antenna center-fed through a specific length of open-wire line connected to a balun and coaxial feed line. The length of the wire and the open-wire line are chosen to present a relatively high, resistive impedance on certain bands (e.g., 20m) and a reactive impedance on others, typically relying on a tuner (ATU) to achieve a low \text{SWR} across the full range of desired bands.
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