Now we're in Folsom and get all kinds of strange weather! With the SWR button you can now display the resonances of the antenna structure over any frequency range, as shown below. **I worked all over the USA I recently had great results with a delta Much has been printed 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. He is peaking S8 and was louder the other Maybe it has to do with the unequal sides and tilt? I use "about" because exact numbers are not that Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. You can get multiband performance by using a wide-range antenna "tuner", a 4:1 balun, and parallel feed line, such as 450 ohm window line. Likewise, the advantages of a coaxial cable compared to a chicken ladder with Matchbox for this type of antenna are practically and metrologically documented. Delta-loop antenna 80m - Christina Cherry The Loop Skywire QST November 1985, pp. All these comments are about a vertical Delta-loop. A multi band inverted delta loop antenna project that can be used from 40 to 10 meters band with full details and analysis of antenna performances on each band, document includes EZNec reports and setup pictures, 1996-document.write(new Date().getFullYear()) The DXZone.com - Terms of Use, Copyright & Privacy Policy, [ Hits: 1002 | Votes: 4 | Rating: 7.25 ], [ Hits: 2760 | Votes: 6 | Rating: 3.17 ], [ Hits: 4915 | Votes: 18 | Rating: 7.11 ], [ Hits: 2763 | Votes: 7 | Rating: 4.86 ], [ Hits: 65323 | Votes: 68 | Rating: 6.66 ], [ Hits: 9614 | Votes: 18 | Rating: 3.83 ], [ Hits: 32807 | Votes: 35 | Rating: 6.16 ], [ Hits: 15602 | Votes: 47 | Rating: 7.43 ], [ Hits: 3874 | Votes: 6 | Rating: 5.33 ], [ Hits: 2038 | Votes: 4 | Rating: 3.75 ], [ Hits: 25985 | Votes: 5 | Rating: 3.6 ], [ Hits: 6903 | Votes: 3 | Rating: 8.33 ], [ Hits: 20377 | Votes: 15 | Rating: 3.28 ], [ Hits: 1441 | Votes: 6 | Rating: 3.17 ], [ Hits: 4278 | Votes: 3 | Rating: 3.33 ], [ Hits: 7666 | Votes: 6 | Rating: 7.67 ], [ Hits: 1763 | Votes: 4 | Rating: 3.25 ], [ Hits: 12797 | Votes: 18 | Rating: 6.34 ], [ Hits: 1471 | Votes: 4 | Rating: 5.75 ], [ Hits: 2310 | Votes: 16 | Rating: 6.13 ], [ Hits: 7020 | Votes: 13 | Rating: 7.54 ], [ Hits: 7118 | Votes: 7 | Rating: 7.28 ], [ Hits: 6697 | Votes: 8 | Rating: 4.62 ], [ Hits: 81072 | Votes: 41 | Rating: 4.88 ], [ Hits: 1779 | Votes: 11 | Rating: 8.55 ], [ Hits: 3690 | Votes: 13 | Rating: 5.92 ], [ Hits: 2059 | Votes: 19 | Rating: 6.12 ], [ Hits: 3928 | Votes: 9 | Rating: 6.55 ], [ Hits: 9963 | Votes: 4 | Rating: 6.75 ], [ Hits: 11083 | Votes: 10 | Rating: 6.5 ], [ Hits: 12961 | Votes: 8 | Rating: 7.5 ]. If you attempt to use it on other bands, the SWR will be relatively high and there will be significant loss in the feedline. (Ref. This is done so you can uncoil the antenna. great time with it.When I first built it, I fed it from the found to be so appealing about this antenna was that it was fairly From my Balun to my tuner with a short piece of low loss 50 ohm coax. Well, some.. depending on your choice of Hey Jerry - I'll bet you didn't see any winds like that back in Martinez, eh? After we had the Delta loop of our OV home G25 back in the gears (see action Nobel laureates ) and I was very pleased with the send / receive properties, I wanted to build this type of antenna at home. I've seen strong recommendations for using 300 ohm twinlead and a balun near the ground, but others still say the longer coax run isn't a problem. The base of the Delta Loop is only 10 feet above average ground. This antenna will present an acceptable SWR over a relatively small portion of the 80M band (see below). . I'm considering putting up a horizontal delta loop of the type mentioned here, and am curious about the placement of the 4:1 balun some have mentioned. The goals of the project were to provide an optimized antenna for 40m, 80m, 20m, and all other HF ham bands, in that order of priority. The bandwidth at SWR. (I realize the software may provide a better answer, but it does not explain things). On the other hand, the SWR, to my delight at 40m, improved to an acceptable 1: 1.7. If we make the loop much longer or shorter, we would end up with the antenna being unsuitable for some of the bands. Jim / W6JHB. AND IT IS WORKING DX JUST FINE. The LGD 100 does not chew long on 160 meters and as I drop bands, the chewing drops like a rock. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.Aloha es 73 de Russ (KH6JRM).
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