Does a G5RV need a tuner?
The G5RV will require the use of a wide range antenna tuner in the shack. Often, the tuner built into the transceiver is not sufficient to the task. Every antenna installation may have unusual circumstances that cause unintended or unexpected operation.
What is the impedance of a G5RV antenna?
G5RV antenna basics The G5RV antenna is an amateur radio centre fed doublet with a symmetric resonant feeder line, which serves as impedance matcher for a 50Ω coax cable to the transceiver.
How long is a G5RV antenna?
Standard G5RV antennas are 31 meters (102 feet) long, excluding feedline and matching section length, and can be used on 80, 40, 20, 15, and 10 meters. A half-length G5RV (51 feet long) can be used on 40, 20, 15, and 10 and is known as the G5RV Junior.
How high should a G5RV Jr be?
The center of the antenna must be at least 30 feet above the ground in this configuration.
How high does a G5RV have to be?
Ideally this dipole must be placed over 10m high. The antenna can be fed by any convenient type of feeder provided always that a suitable type of antenna tuner is used.
What band is G5RV?
Louis Varney (G5RV) invented this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With a transmatch, it can operate on all HF amateur radio bands (3.5–30 MHz).
What size is a half size G5RV?
Type: Half size G5RV(standard) Frequency: 10-15-20-40 Metres. Wire length: 15.5 Metres of 1.5mm enamelled copper wire. Ribbon length: 4.6 Metres of high quality USA 300 Ohm.
Do I need an antenna tuner for the G5RV?
While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. This is true even when fed through fairly long runs of RG-213 feed line. Feedpoint Impedance There is a myth that the G5RV works better with a 75 ohm feed line.
What bands does the G5RV work on?
Those bands include 80, 40, 20, 15, and 12 meters. The antenna will NOT work as well as a dipole on any other HF band. By adding a relay and a ground system the G5RV can be made to work quite well as a “T” antenna on 160 meters. People have an overwhelming prejudice against the G5RV.
How do you reduce SWR on a G5RV antenna?
Some commercial G5RV antenna designs rely on the loss in a long coax feedline to bring their claimed SWR down in lieu of—or in addition to—an antenna tuner. You should use a ferrite-core broadband 1:1 current balun (choke) right at the junction of the window line and coax to keep RF off the outside of the coax shield.
Is the G5RV a good choice for me?
On most bands the G5RV works fairly well when mixed with a 50 ohm feeder. The G5RV has a modest SWR in the 80, 40, 20, and 12 meter bands, is usable on 15 meters. It is not a good choice for 30 or 10 meters.