The G5RV is a type of multi-band antenna commonly used by amateur radio operators. It was designed by French radio amateur Louis Varney (callsign G5RV) in the 1940s. Here are some key features and characteristics of the G5RV antenna:
- Design: The G5RV is essentially a dipole antenna that is fed with a balanced feed line. It typically consists of a center-fed dipole with a length of about 102 feet (31 meters) and is often used with a 450-ohm ladder line or a 300-ohm twin-lead feed line.
- Multi-Band Capability: One of the main advantages of the G5RV is its ability to operate on multiple HF bands, including 20, 40, and 80 meters, making it a versatile choice for amateur radio operators who want to work on different frequencies without needing multiple antennas.
- Impedance: The G5RV antenna has a nominal impedance of around 50 ohms at the center frequency of the bands it covers. However, its impedance can vary significantly across different frequencies, which may require the use of an antenna tuner for optimal performance.
- Installation: The G5RV can be installed in various configurations, including as an inverted V, flat-top, or sloper, depending on the available space and the operator’s preferences. It can be hung between two supports or trees.
- Performance: While the G5RV is not the most efficient antenna design compared to some other options, it is popular due to its simplicity, ease of construction, and effectiveness for general amateur radio use.
- Variants: There are several variations of the G5RV antenna, including the G5RV Jr., which is a shorter version designed for use on higher bands, and other modifications that may include different feed line types or lengths.
Overall, the G5RV is a well-known and widely used antenna among amateur radio enthusiasts, particularly for those looking for a simple and effective solution for multi-band operation.