Hi all, I think I have the space to do this, although the property is heavily wooded with oak trees. I've modeled a V-beam with 219 feet legs for 40 meters. Eznec is showing a gain of about 10dbi. I'
WOW!!! Thanks Mike.....that does sound nice! :-] In my case, it will be 1.5 wl-long for 40m. I think its a great thing to try just for kicks. I use an arborist sling-shot and a tennis ball, filled wi
Yes, a number of them over the years. They do have nice gain and are simple in concept. However, a few points to remember: - The gain is VERY narrow. A 4 wavelength long legs V Beam probably has a 25
Several years ago WA2WVL had a really nice lecture on 80m long-boom inverted-V Yagis at the Dayton Antenna Forum. It's been on my bucket list ever since. An important safety aspect of these antennas
I have a V beam nominally aimed at Spain, no great planning, just worked out that way. It's about 325 feet each leg, over a lake. Sometimes as much as an "S" unit better than the inverted V at 85 fee
Aluminum fence wire stretches easily under load. It needs to be supported every ten feet or so, not ideal for long wire antennas. I won't even use it for electric fences ;-) Ken WA8JXM ______________
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 17 Sep 2015 06:15:09 -0500
Aluminum coated steel wire is commonly used for electric fences. Although proper practice is to install it with low tension (as per vendor and MFG) that is not because of any failing in the wire's st
If anyone has an interest in modeling the V-Beam, I have placed a 4Nec2 input file at the top of my QRZ.com page. The Cartesian angle computation allows for changing the included angle and leg length
Patrick, Okay. You just said aluminum fence wire. I've used that for fencing and it stretches pretty bad. Steel core, aluminum coated would be different although myself I would go with copper coated
Thanks Ken, I didn't realize the aluminum stuff would stretch. They have it at lowes for electric fence wire, so I was assuming the stretching would be pretty much identical to steel wire. I can use
Thanks Paul! Do you know if 4Nec2 files be imported into Eznec? -- Bw_dw@fastmail.net _______________________________________________ _______________________________________________ TowerTalk mailing
Author: Jon Pearl - W4ABC <jonpearl@tampabay.rr.com>
Date: Thu, 17 Sep 2015 11:46:47 -0400
Hi Duane, Kencove Farm Fence Supplies sells a number of different types of fence wires, including steel. I've called and talked to them in the past concerning small diameter fiberglass rod and they w
I've only used 4Nec2 and not EZNEC. Someone else on the list likely has an answer. Paul, W9AC Thanks Paul! Do you know if 4Nec2 files be imported into Eznec? _________________________________________
Several years ago WA2WVL had a really nice lecture on 80m long-boom inverted-V Yagis at the Dayton Antenna Forum. It's been on my bucket list ever since. An important safety aspect of these antennas
4NEC2 files have a .nec extension. So if EZNEC can import them you would be ok. The other way around works (4NEC2 imports .EZ files). Rick K2XT _______________________________________________ ______
Author: Dan Maguire via TowerTalk <towertalk@contesting.com>
Date: Thu, 17 Sep 2015 17:51:41 -0700
No. But ... For AutoEZ users, here is a V-Beam model I created a while ago. http://ac6la.com/adhoc/V-Beam.weq It is similar to the one that Paul posted on his QRZ page in that variables are used to c
Author: Dan Maguire via TowerTalk <towertalk@contesting.com>
Date: Thu, 17 Sep 2015 18:48:57 -0700
Well, not quite. Yes, 4nec2 files have a .nec extension but they typically do not follow standard NEC conventions. For example, Paul's posted file contains these lines: SY len = 350 'Element Length S
A vertical is also omni directional but multiple verticals definitely have a pattern. I have modeled an inverted V yagi for someone in Aruba and the patterned looked fine. Many people build them by s
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 17 Sep 2015 21:54:26 -0500
I suspect that there is a good chance that folks who report being able to highly tension aluminum wire are using aluminum coated steel wire such as is used for electric fences. It works fine and last
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 17 Sep 2015 22:01:00 -0500
OK, Ken... here is the standard disclaimer.... Ignore what I say but listen carefully to what I mean. Aluminum coated steel wire sold for electric fence wire will take considerable tension and works