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#1
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I just got an Icom 726 and am trying to decide on an antenna. Is
there any antenna that will allow me to work all of the bands without the use of a tuner? I do not need perfect SWR, but I don't want to shorten the life of my 726. I was looking at dipoles on ebay but they all say they need a matching tuner. Thanks, Dan |
#2
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Dan wrote:
I just got an Icom 726 and am trying to decide on an antenna. Is there any antenna that will allow me to work all of the bands without the use of a tuner? I do not need perfect SWR, but I don't want to shorten the life of my 726. I was looking at dipoles on ebay but they all say they need a matching tuner. Depends on how much you want to spendgrin. I have a tribander Yagi with a 40-meter rotatable dipole add-on kit and separate wire dipoles for 80 and 160 meters; they work great, no tuner required. However, the whole thing is pretty expensive and may not be "spouse-practical" in many cases. (being single I don't worry about such things!) I do also have a Windom. It's a dipole, with 88 feet of wire on one side, 44 feet on the other, and a 4:1 balun at the feedpoint. (the classic Windom design has some 300-ohm TV flat leadin between the feedpoint and the balun. There are mechanical advantages to doing it that way, but electrically it works fine either way.) This antenna works well on most bands - it does require a tuner on one band (15m if I recall properly) but if your rig has an automatic tuner built-in it'll do. Multiband verticals are generally easy to erect and work on all bands. You may require a system of ground radials. One can attach several dipoles to a common feedpoint; only the dipole that's cut for the current band will be active. Really if you have the space for a tuner it's probably most cost-effective to put up the longest dipole you have space for and use 450-ohm ladder line and a tuner. -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
#3
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Dan wrote:
I just got an Icom 726 and am trying to decide on an antenna. Is there any antenna that will allow me to work all of the bands without the use of a tuner? I do not need perfect SWR, but I don't want to shorten the life of my 726. I was looking at dipoles on ebay but they all say they need a matching tuner. Depends on how much you want to spendgrin. I have a tribander Yagi with a 40-meter rotatable dipole add-on kit and separate wire dipoles for 80 and 160 meters; they work great, no tuner required. However, the whole thing is pretty expensive and may not be "spouse-practical" in many cases. (being single I don't worry about such things!) I do also have a Windom. It's a dipole, with 88 feet of wire on one side, 44 feet on the other, and a 4:1 balun at the feedpoint. (the classic Windom design has some 300-ohm TV flat leadin between the feedpoint and the balun. There are mechanical advantages to doing it that way, but electrically it works fine either way.) This antenna works well on most bands - it does require a tuner on one band (15m if I recall properly) but if your rig has an automatic tuner built-in it'll do. Multiband verticals are generally easy to erect and work on all bands. You may require a system of ground radials. One can attach several dipoles to a common feedpoint; only the dipole that's cut for the current band will be active. Really if you have the space for a tuner it's probably most cost-effective to put up the longest dipole you have space for and use 450-ohm ladder line and a tuner. -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
#4
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Don't know your living arrangements or finances, but there are several
multiband verticals that come to mind that would permit you to operate several bands. MFJ, Gap, Butternut, and Cushcraft come to mind. Others will have I hit the send button. Dan wrote: I just got an Icom 726 and am trying to decide on an antenna. Is there any antenna that will allow me to work all of the bands without the use of a tuner? I do not need perfect SWR, but I don't want to shorten the life of my 726. I was looking at dipoles on ebay but they all say they need a matching tuner. Thanks, Dan |
#5
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Don't know your living arrangements or finances, but there are several
multiband verticals that come to mind that would permit you to operate several bands. MFJ, Gap, Butternut, and Cushcraft come to mind. Others will have I hit the send button. Dan wrote: I just got an Icom 726 and am trying to decide on an antenna. Is there any antenna that will allow me to work all of the bands without the use of a tuner? I do not need perfect SWR, but I don't want to shorten the life of my 726. I was looking at dipoles on ebay but they all say they need a matching tuner. Thanks, Dan |
#7
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On 22 May 2004 22:47:41 -0700, (Dan) wrote:
I just got an Icom 726 and am trying to decide on an antenna. Is there any antenna that will allow me to work all of the bands without the use of a tuner? A Windom will let you work a bunch of bands with no tuner..... http://kh2d.net/windom.cfm 73, Jim KH2D |
#8
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wrote:
A Windom will let you work a bunch of bands with no tuner..... http://kh2d.net/windom.cfm Interesting, the idea of adding the second one on the same feed for 15. Guess I ought to try it. My dimensions are *slightly* different - 44' on one side, 88' on the other. When putting it up, I was told you needed 300-ohm TV twinlead between the feedpoint and the balun. However, the guy describing the antenna said he didn't know *how much* twinlead you needed, and didn't think it mattered. So I tried *zero*. Worked great. Except that when the antenna is supported from the ends (I have a large open field) that balun becomes a lot of weight, it's a mechanical problem. The rope on the west end broke a few weeks ago, right now the feedpoint is only about ten feet up... I'll probably rebuild with the balun fastened to a 4x4 post and 30' or so of twinlead, strictly for mechanical reasons. -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
#9
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wrote:
A Windom will let you work a bunch of bands with no tuner..... http://kh2d.net/windom.cfm Interesting, the idea of adding the second one on the same feed for 15. Guess I ought to try it. My dimensions are *slightly* different - 44' on one side, 88' on the other. When putting it up, I was told you needed 300-ohm TV twinlead between the feedpoint and the balun. However, the guy describing the antenna said he didn't know *how much* twinlead you needed, and didn't think it mattered. So I tried *zero*. Worked great. Except that when the antenna is supported from the ends (I have a large open field) that balun becomes a lot of weight, it's a mechanical problem. The rope on the west end broke a few weeks ago, right now the feedpoint is only about ten feet up... I'll probably rebuild with the balun fastened to a 4x4 post and 30' or so of twinlead, strictly for mechanical reasons. -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
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