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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+buried\s+radial\s+problems\.\s*$/: 13 ]

Total 13 documents matching your query.

1. Topband: buried radial problems. (score: 1)
Author: "Enzo" <ik3swb@tiscali.it>
Date: Sun, 19 Dec 2004 15:51:23 +0100
I installed a Titanex V160HD along with its own matching unit V160A. I'm puzzled about what is going on with the radial system I'm testing: 1.. 60 different length radials centered on antenna base. T
/archives//html/Topband/2004-12/msg00253.html (8,278 bytes)

2. Re: Topband: buried radial problems. (score: 1)
Author: "Don K5AQ" <donhall@myriad.net>
Date: Sun, 19 Dec 2004 20:18:25 -0600
Enzo, I have a similar situation with a BC station on 1620 about 2km away. I use the MFJ-731 SWR Analyzer Filter to help me find the resonance of the vertical to a first degree. Then I use my rig and
/archives//html/Topband/2004-12/msg00259.html (7,494 bytes)

3. Re: Topband: buried radial problems. (score: 1)
Author: "Enzo" <ik3swb@tiscali.it>
Date: Mon, 20 Dec 2004 13:51:31 +0100
Hi everybody, Radials that are elevated or insulated need to be resonant... The elevated radials are resonant, actually I put them up to discover why the grounded system didn't work. The grounded one
/archives//html/Topband/2004-12/msg00265.html (7,939 bytes)

4. Re: Topband: buried radial problems. (score: 1)
Author: "George & Marijke Guerin" <gmguerin@voyager.net>
Date: Mon, 20 Dec 2004 08:40:46 -0500
Enzo, etc., I agree with Don, K5AQ. The MFJ 259B is can be overloaded by nearby AM broadcast stations. My suggestion is to try the measurements at night when the station is off the air. Otherwise get
/archives//html/Topband/2004-12/msg00266.html (7,919 bytes)

5. Re: Topband: buried radial problems. (score: 1)
Author: "Enzo" <ik3swb@tiscali.it>
Date: Tue, 21 Dec 2004 09:28:26 +0100
Topband: buried radial problems.I'd like to thanks everybody for any suggestion. This evening I'll try to tune the antenna after 11:00 PM when the BC will be switched off. Happy holidays. 73s de Enzo
/archives//html/Topband/2004-12/msg00272.html (7,022 bytes)

6. Re: Topband: buried radial problems. (score: 1)
Author: "Enzo" <ik3swb@tiscali.it>
Date: Wed, 22 Dec 2004 09:22:09 +0100
Hi everybody! I've been worked out the problem! Last night I went out after the BC was turned off. I disconnected the two elevated radials, then I joint the two buried system... It was -6&deg;C but I
/archives//html/Topband/2004-12/msg00275.html (7,884 bytes)

7. Re: Topband: buried radial problems. (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 22 Dec 2004 10:32:38 -0600
Probably because resistance to ground of such a limited ground system is fairly high, which adds to the low radiation resistance of your antenna to get you closer to 50 ohms. In other words, you may
/archives//html/Topband/2004-12/msg00280.html (8,895 bytes)

8. Re: Topband: buried radial problems. (score: 1)
Author: "Doug Waller" <NX4D@comcast.net>
Date: Wed, 22 Dec 2004 14:43:41 -0500
In general, you want the radiation resistance to be large compared to the other two (or the other two to be small in comparison to the radiation resistance). With a short antenna, you make the radiat
/archives//html/Topband/2004-12/msg00281.html (9,656 bytes)

9. Re: Topband: buried radial problems. (score: 1)
Author: "Rick Karlquist" <richard@karlquist.com>
Date: Wed, 22 Dec 2004 12:23:07 -0800 (PST)
If you simply model a top loaded ("T" type) vertical on EZNEC, you can see that if you get enough top loading wire in the air, you can get the drive impedance up about as high as you want. This has
/archives//html/Topband/2004-12/msg00282.html (8,420 bytes)

10. FW: Topband: buried radial problems. (score: 1)
Author: "Robert McGwier" <rwmcgwier@comcast.net>
Date: Wed, 22 Dec 2004 22:13:58 -0000
Enzo: Someone has already said, but it does bear repeating: when using elevated radials, they have to be part of the resonant system, and you will need radials cut for 160, 80, 40 or some system to b
/archives//html/Topband/2004-12/msg00284.html (8,449 bytes)

11. Re: Topband: buried radial problems. (score: 1)
Author: Ken Brown <ken.d.brown@verizon.net>
Date: Wed, 22 Dec 2004 18:03:55 -1000
But the Kinstar patent changes all the rules. Excuse me, no offense intended, but THE RULES NEVER CHANGE. This is physics. Sometimes we discover that what we thought were the rules need some refineme
/archives//html/Topband/2004-12/msg00286.html (8,422 bytes)

12. Re: Topband: buried radial problems. (score: 1)
Author: "Enzo" <ik3swb@tiscali.it>
Date: Thu, 23 Dec 2004 14:14:10 +0100
Hi Bob, Actually I put up the two elevated just for testing and to discover why the first system didn't work, they were only for 160m (abt. 40m lenght each) but mounted at 2.5m from the soil, too clo
/archives//html/Topband/2004-12/msg00287.html (8,742 bytes)

13. Re: Topband: buried radial problems. (score: 1)
Author: Sinisa Hristov <shristov@ptt.yu>
Date: Thu, 23 Dec 2004 09:21:50 -0500
Just had a quick look at http://www.kintronic.com/site/techpapers/KTL_NAB_Paper.pdf Must admit that I failed to see anything new, let alone revolutionary in the design shown on Figure 1. I can only
/archives//html/Topband/2004-12/msg00289.html (9,116 bytes)

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