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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+4\s+square\s+advice\s*$/: 13 ]

Total 13 documents matching your query.

1. [TowerTalk] 4 square advice (score: 1)
Author: Bill via TowerTalk <towertalk@contesting.com>
Date: Fri, 10 Nov 2017 20:51:15 -0500
I'm starting construction of my wire 4 square for 80 meters. I know the bigger the diameter is (like having Rohn 25 tower for the radiator) the better the bandwidth. I'm using #12 insulated wire, but
/archives//html/Towertalk/2017-11/msg00133.html (7,245 bytes)

2. Re: [TowerTalk] 4 square advice (score: 1)
Author: "Jeff" <keepwalking188@ac0c.com>
Date: Fri, 10 Nov 2017 21:37:27 -0600
I'm looking at the exact same scenario Bill. I have been poking around using AutoEZ (a front end for EZNEC) where the guy has cooked up a comprehensive model for the 4-square inclusive of a hybrid co
/archives//html/Towertalk/2017-11/msg00135.html (9,954 bytes)

3. Re: [TowerTalk] 4 square advice (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Fri, 10 Nov 2017 21:36:03 -0800
You've described a really good process, Jeff. One caution that you're probably aware of, but just in case -- NEC can get real picky about segment length in certain situations, and I think that parall
/archives//html/Towertalk/2017-11/msg00136.html (8,696 bytes)

4. Re: [TowerTalk] 4 square advice (score: 1)
Author: <john@kk9a.com>
Date: Sat, 11 Nov 2017 12:38:44 -0500
I find it hard to believe that using wire vertical instead of a freestanding aluminum vertical with maybe a 1/2 diameter top section or even a solid 3" irrigation pipe will make enough bandwidth diff
/archives//html/Towertalk/2017-11/msg00139.html (7,995 bytes)

5. Re: [TowerTalk] 4 square advice (score: 1)
Author: Andre VanWyk via TowerTalk <towertalk@contesting.com>
Date: Sat, 11 Nov 2017 12:21:56 -0600
I agree. That is why I went with Rohn 25G for mine. NJ0F Sent from my iPhone _______________________________________________ _______________________________________________ TowerTalk mailing list Tow
/archives//html/Towertalk/2017-11/msg00141.html (9,744 bytes)

6. Re: [TowerTalk] 4 square advice (score: 1)
Author: "Jeff" <keepwalking188@ac0c.com>
Date: Sat, 11 Nov 2017 16:50:22 -0600
That is exactly the value of something like AutoEZ. You don't have go by gut feeling making a guess, or based on subjective opinions of others. You can KNOW the implication before making the physical
/archives//html/Towertalk/2017-11/msg00146.html (9,710 bytes)

7. Re: [TowerTalk] 4 square advice (score: 1)
Author: <john@kk9a.com>
Date: Sun, 12 Nov 2017 10:35:40 -0500
You don't need AutoEZ to see the effect, EZNEC will work. I just ran a model of a single vertical using 2.00" tubing and one with .090" tubing. The bandwidth difference was more different than I woul
/archives//html/Towertalk/2017-11/msg00150.html (10,124 bytes)

8. Re: [TowerTalk] 4 square advice (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Sun, 12 Nov 2017 10:25:13 -0800
Right. But AutoEZ allows us to do a LOT more calculations a LOT faster.  If you own Excel, AutoEZ is well worth the $75 cost. I just ran a model of a single vertical using 2.00" tubing and one with .
/archives//html/Towertalk/2017-11/msg00152.html (8,722 bytes)

9. Re: [TowerTalk] 4 square advice (score: 1)
Author: Steve London <n2icarrl@gmail.com>
Date: Mon, 13 Nov 2017 09:11:03 -0700
You also need EZNEC if you don't already have it. Minimum of another $99. 73, Steve, N2IC _______________________________________________ _______________________________________________ TowerTalk mai
/archives//html/Towertalk/2017-11/msg00166.html (7,942 bytes)

10. Re: [TowerTalk] 4 square advice (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 13 Nov 2017 10:04:54 -0800
You also need EZNEC if you don't already have it. Minimum of another $99. Yep. And to get enough segments to model large or complex antennas, you may need one of the higher priced versions. 73, Jim K
/archives//html/Towertalk/2017-11/msg00167.html (8,632 bytes)

11. Re: [TowerTalk] 4 square advice (score: 1)
Author: "john@kk9a.com" <john@kk9a.com>
Date: Tue, 14 Nov 2017 14:36:12 -0500
AutoEZ appears to be a valuable tool. I am not designing anything new lately but I'll still probably purchase it when I have some time to play. To compare the 80m SWR bandwidth of different tubing si
/archives//html/Towertalk/2017-11/msg00168.html (9,095 bytes)

12. Re: [TowerTalk] 4 square advice (score: 1)
Author: "Jeff" <keepwalking188@ac0c.com>
Date: Tue, 14 Nov 2017 13:48:49 -0600
But you are talking about a 4-square and not a vertical. So this experiment shows that a vertical with a fatter element is more broadbanded and that certainly implies the same with a 4-square, but it
/archives//html/Towertalk/2017-11/msg00169.html (10,528 bytes)

13. Re: [TowerTalk] 4 square advice (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Wed, 15 Nov 2017 09:25:09 -0500
John - set the Alternate Zo to the Rr of the antenna at resonance to get a picture of what it would be if matched... somewhere around 36 ohms should do. g. AutoEZ appears to be a valuable tool. I am
/archives//html/Towertalk/2017-11/msg00182.html (9,570 bytes)

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