W3EDP antenna: The W3EDP antenna is a form of end fed wire that has been in use for many years and was first described in 1936, it has become popular, especially with ham radio low power or QRP enthusiasts. . ;-) The result is a "hybrid" dipole or "ungrounded" vertical amateur radio antenna, depending on your point of view! 160 meter full wave loop antenna The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner Trapped dipole for 40-80-160 meters Build a space efficient trapped dipole antenna for 40-80-160 meter bands using RG-58 and PVC … It is also used as a portable antenna for Field Days and other similar events. KE4UYP Top-Fed 1/4 Wave Linear Loaded Vertical For 160M K5OE Antennas-- HF Antennas 40/80/160 55 ft Vertical Low Band Antenna-- From K3KY Verkürzte Antennen-- Short Dipoles and Verticals for 160m & 80m -- From DJ9RB Skywire Loop Antenna-- From The ARRL Verticals 80 Meter Antennas I fed both wires direct into the ATU. The W3EDP multi-band HF wire antenna is popular among QRP enthusiasts because it is light weight and cheap. Read more about . Change the program to use 423 if desired.) But performance is down about 8-12db on a dipole on 80m. The ones on a red toroid seem to work better on 160M and above 12M but they all work well. The antenna has a full 300kHz bandwidth on 80m between 3:1 SWR points. In fact, they rune with my FT-450AT internal tuner although they test to be under 3:1 SWR-wise and usually less than 2:1, depending on the band being tested. However, there are some test results for the EF antennas that I have … One such antenna is the W3EDP end fed. I was able to work all over the UK on 160m and 80m using the 85ft main wire and 17ft counterpoise with good signal strength reports. I decided to see if the W3EDP antenna could be optimized by adjusting the counterpoise lengths for each band. by William Eric McFadden (click image to enlarge) My main field rigs, an Elecraft KX3 and an Elecraft K2, both with built-in antenna tuners, are all-band MF/HF rigs, covering 160m through 10m. So, I bent the rules ... and the antenna, somewhat! Some books say that you don’t use the counterpoise at all on 10m. (The KX3 also covers 6m.) Introduction This antenna … It consists of an 85ft wire fed against a 17ft counterpoise (attached to the earth point on the ATU). Others say that you can use a 6.5ft … Variants of the modern W3EDP Zepp Off-Center-fed Antenna 6 These usually require wide range antenna tuner Courtesy Tom, K1TA Courtesy Balun Designs • 160 through 6 meters! But, I had to fit (squeeze) the 160M dipole inside the boundaries of my lot! • Requires wideband tuner: High SWR on even harmonics W3EDP antenna. In addition to multiples, wire lengths less than 1/4 wavelength of the lowest desired frequency are blocked out because an antenna should be at least that long. Figure-1 is a diagram of the original W3EDP antenna. . End fed wire antennas can work very well under many circumstances. . I used a W3EDP Antenna with an FT817 and a ZM4 Z Match ATU. The feed point is just outside my basement shack window, about one meter (3 feet) … The W3EDP antenna was first described in the ARRL’s QST magazine in 1936. W3EDP's results in the above referenced 1936 article, however, fall in line with 468/f and so is used here. • 4:1 balun is wideband and allows this to work. antenna for 80-10m Steve Nichols G0KYA A shortened multiband antenna, about 23m long, for 80m-10m that offers low SWR (1.3:1) on 80m and 40m, and below 3:1 on 20, 15 and 10m. 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