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Should not be necessary
- In summary, for good balanced antennas such as dipoles, Yagis, and similar geometries, RF grounding should not be necessary. If you have an unbalanced antenna like a vertical or a single long-wire antenna, or an inverted-L, or similar then a ground plane (RF ground) is required for efficient operating.
ham.stackexchange.com/questions/34/when-is-rf-grounding-necessary-and-when-is-it-not
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Oct 22, 2013 · In summary, for good balanced antennas such as dipoles, Yagis, and similar geometries, RF grounding should not be necessary. If you have an unbalanced antenna like a vertical or a single long-wire antenna, or an inverted-L, or similar then a ground plane (RF ground) is required for efficient operating.
- Grounding a dipole - Amateur Radio Stack Exchange
If you are going to properly ground the antenna to a single...
- Does a 1/2 wavelength end-fed antenna need a good RF ground?
An RF ground (defined here as either very conductive ground,...
- Grounding a dipole - Amateur Radio Stack Exchange
Mar 30, 2017 · If you are going to properly ground the antenna to a single point ground, assuming you are using a coax feedline, use a balun and ground the coax shield. Otherwise you'll unbalance the antenna. If you are using a balanced feedline it's probably still best to run coax from the transceiver to the station entrance ground, then have a balun outside.
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After antennas, station grounding is probably the most discussed subject in amateur radio and it is also the one replete with the most misconceptions. The first thing to know is that there are three functions served by grounding in ham shacks: 1. Electrical Safety 2. Stray RF Suppression (or simply RF Grounding) 3. Lightning Protection. Each has it...
1. How important is a ground? Most people say that grounding is all- important, but I have had a few people tell me that grounds aren't necessary.
Grounds fulfill three distinct functions. The best ground for one function isn't necessarily the best for another. The three are:
a. Safety ground. This protects you from a shock hazard if one of the mains or high voltage power supply wires contacts the chassis due to some kind of fault. The requirements for this ground are spelled out in your state's electrical code. I believe that most states adopt the National Electrical Code (NEC). The safety ground conductor in your wall...
b. Lightning ground. The requirements for a ground for lightning protection are much more stringent than for a safety ground. The topic has been discussed in this group many times, and there are numerous resources available for learning how to make a ground system for lightning protection. (See the TIS Page on Lightning Protection)
c. RF ground. This is required only for certain types of antennas-- ones which require current flow to ground to complete the antenna circuit. An example is a quarter-wave vertical. One wire of the feedline connects to the base of the antenna, and the other connects to ground. The connection to ground has to have a low RF resistance, or you'll expe...
Shallow-buried radial wires are the best. Connection to other conductors just under the surface, like a metal water pipe, is next. These are for the RF ground described above.
Jul 29, 2024 · RF ground is not the same thing as an electrical or lightning ground. The term is a misnomer—it really isn’t a ground at all. You know the dipole antenna is a half-wave long—two quarter-wave sections. If you have a quarter wave vertical antenna, it’s a monopole, which is actually half of a dipole.
If you have a DC path from both dipole legs to ground, you should be good. Hi all, I've recently made some changes to my backyard antenna setup and ran into a question - I used to have a 1/4 vertical antenna, which I learned….
Jan 24, 2019 · An RF ground (defined here as either very conductive ground, or a radial or grid system of wires beneath the antenna with a radius at least 1/4λ from the antenna center) isn't required.
The ground (earth) acts as a reflective surface (not as a return conductor) and can double the effective length of the aerial, producing a dipole aerial. This ground plane effect can be improved by using a sheet of metal (good conductor) or even wire.
