Counterpoise Wire Size. What length should said counterpoise be? What type of wire, wire
What length should said counterpoise be? What type of wire, wire awg, etc? I plan to use the antenna portable only (parents don’t allow antennas lol) which is why I’m going the counterpoise route instead of grounding it with a ground rod. The Counterpoise conductor shall be a bare solid copper wire, #6 AWG. You can calculate the AC resistance for any wire size with various online calculators such as this one. B. Design considerations Engineer should evaluate the soils in the vicinity of proposed counterpoise and ground rod installations and determine if soil conditions would adversely affect copper. Correct or incorrect? A counterpoise is simply a long, insulated wire that attaches to the ground connection on your antenna tuner. How is the counterpoise size arrived at, is it a ENDFED/EFHW Antenna & Choke My 8010 Enfed antenna Configuration My 1:49 Transformer is located in the Attic , just under a tile and obviously the wire is routed outside and hook on a 12 meters fiberglass pole in the garden. My main question is where exactly should the counterpoise wires connect? Is it at the feed point or the grounding lug on my tuner? If at the feed point, what type of connectors should I use and where on the stud should it attach? #6 BARE COUNTERPOISE WITH 5/8" X 8' GROUND ROD INSTALLED AT MAX. io | Home main@Buddipole. 5 for UHF and about 19. Oct 3, 2014 · If you use an actual resonant 1/2 end fed wire with a very high ratio transformer (around 64:1) then counterpoise requirements are substantially reduced and performance will go way up. Correct or incorrect? This is exactly the convenience the end-fed half-wave antenna (EFHWA) offers. It does not require an extensive ground like a big ferrous vehicle body, only a short counterpoise wire. I am currently using a sloped end fed antenna (red: primary antenna, lime: possible counterpoise) with a 9:1 balun. 8 MHz, on the other hand, a 126 foot counterpoise is needed, but for that band I use a shorter counterpoise with a loading coil. Used at MF and HF to provide an RF ground for an antenna“ The article about “counterpoise” by Owen Duffy, VK2OMD ex VK1MD addresses many issues with the term. The size of the counterpoise used for radio work depends on the wavelength of the radio waves used. Here is explained why with a list of antennas and counterpoise examples. What is a counterpoise? Think of an antenna as needing two parts to work effectively: The antenna element that sticks up from With that said, I doubt a counterpoise would make it worse. Whether you're building a custom antenna, looking to keep a spare wire on hand Mar 22, 2012 · The counterpoise is nothing more than a wire that can also be used as a guy line if you insulate the ground side — it is the “other half” of the dipole. If you think about it, When you mount a 40m antenna on a car your vehicle is not 10m square but it still works with a small counterpoise. For 1. Its purpose is to provide a convenient place to connect the coax feed line, radiating element, and counterpoise. Just use as many as you can but after 64 you see diminishing returns. Usually counterpoises are supposed to be about a quarter wavelength long. Lay the counterpoise at least 0. That’s a lot of wire at, say, 3. Cautions using Counterpoises Counterpoises and sparse radial systems, such as four-radial groundplane antennas, operate with considerable potential between the counterpoise and "ground". The best counterpoise is 1/4-wavelength at the lowest frequency you intend to use. C. Though ground rods are forbidden with 1/4 wave verticals due to resistance, they're not a problem for EFHW since much less current flows through the rod than when driving a 1/4 wave. (Yes, it's shorter than a quarter wave. Leopoldo, YV6ENB, is asking what is the recommended counterpoint length and random wire arrangement for EFHW antenna? Watch to learn more about the different options. 5' for 20m). The stranded copper wire now used on Buddipole Wire Assemblies is a stronger wire. ALSO USE GROUND ROD TO TERMINATE THE COUNTERPOISE AT BOTH ENDS OF DUCT COUNTERPOISE Upgrade your antenna setup with our 25' Tinned Copper PTFE wire, meticulously engineered to withstand extreme temperatures (-70°C to 150°C). 3. Since you are attempting to increase the efficiency of your antenna, a good goal is to keep the total AC resistance of your counterpoise to less than 1% of the ideal feed point impedance. A counterpoise is simply a long, insulated wire that attaches to the ground connection on your antenna tuner. It shows which wires to use to get the right length of counterpoise for the band you are working. That would provide the lowest impedance on the common side of the feed point and send the greatest amount of power into the antenna and minimize any RF on the outside of the coax shield. I have a few questions. Sep 20, 2006 · Is counterpoise just another name for groud ring.