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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Matching\s+Transformer\s*$/: 24 ]

Total 24 documents matching your query.

1. Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Thu, 25 Dec 2008 17:51:19 -0600
OK Lets first say Merry Christmas and Happy New Year. Now, I just made a 9:1 transformer from a donut ferrite (I am pretty sure it is Amidon 43 if I remember what he said) that another Ham sent me (I
/archives//html/Topband/2008-12/msg00225.html (7,683 bytes)

2. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 25 Dec 2008 20:20:20 -0800
a 9:1 BALUN vs a matching transformer. Since his looks completely thing. Bob, "Balun" is one of those soft squishy words that means many things to many people, and most people who use the word are mi
/archives//html/Topband/2008-12/msg00227.html (8,269 bytes)

3. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Thu, 25 Dec 2008 23:36:19 -0600
ok guys I just uploaded the pics of my project. I wanted to share with you the results of all your effort and time. This was really fun and I really thank all of you for helping me do this. It actual
/archives//html/Topband/2008-12/msg00228.html (7,426 bytes)

4. Re: Topband: Matching Transformer (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Fri, 26 Dec 2008 10:15:12 -0500
Bob, That is perfectly good looking transformer. Don't worry about baluns (not needed for a beverage anyway) and other stuff people peddle. Try it! If it works you are there! George AA7JV PS: You may
/archives//html/Topband/2008-12/msg00233.html (7,723 bytes)

5. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Fri, 26 Dec 2008 18:10:18 -0600
Forgot and top posted so my last email probably didn't get through OK now I was able to extend the length of the wire to 425 feet. I have attached the zmatch box: 31 TURNS TO WIRE ANTENNA AND GROUND
/archives//html/Topband/2008-12/msg00236.html (8,928 bytes)

6. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Fri, 26 Dec 2008 18:35:06 -0600
Two things to add to this that may or may not be important this is not terminated at the far end This ground is not a stake in the ground at the end of the wire, it is actually tied to the end of one
/archives//html/Topband/2008-12/msg00238.html (8,142 bytes)

7. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Fri, 26 Dec 2008 16:49:10 -0800
That is NOT a good thing. Don't do that! You want no coupling to your transmit antenna. Disconnect it and drive a stake, even if it's not a good stake or a long stake. Yes, as George said, you defini
/archives//html/Topband/2008-12/msg00239.html (8,296 bytes)

8. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Fri, 26 Dec 2008 19:54:28 -0600
I have installed a ground stake and taken the grounded end off of the vertical counterpoise. No resistor installed yet. I also made up and installed a current BALUN made from coax at the feed end. Th
/archives//html/Topband/2008-12/msg00240.html (8,971 bytes)

9. Re: Topband: Matching Transformer (score: 1)
Author: Herb Schoenbohm <herbs@surfvi.com>
Date: Sat, 27 Dec 2008 10:17:30 -0400
Rising in disagreement with one of the best audio engineers on the planet is dangerous....but "fools rush in where angels fear to tread"... Here it is:......a ROG or radial on ground (attached only t
/archives//html/Topband/2008-12/msg00242.html (9,176 bytes)

10. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sat, 27 Dec 2008 14:14:32 -0800
Herb, No disagreement on radials at all -- my advice was with respect to using that radial as a termination for Bob's Beverage. 73, Jim K9YC _______________________________________________ Topband ma
/archives//html/Topband/2008-12/msg00246.html (8,426 bytes)

11. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Sat, 27 Dec 2008 18:39:33 -0600
Pls see inline comments Now as I understand it, I can also connect to the vertical ground plane, so I may try that next. I have figured a way to lengthen the wire to around 533 feet now so I may do t
/archives//html/Topband/2008-12/msg00248.html (9,209 bytes)

12. Re: Topband: Matching Transformer (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Sun, 28 Dec 2008 12:27:17 -0500
Radials on the ground are not resonant. In that application you don't care about resonance as they are simply a device for collecting the return currents and increasing conductivity in the ground. Q
/archives//html/Topband/2008-12/msg00253.html (11,121 bytes)

13. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Sun, 28 Dec 2008 12:44:11 -0600
Well my beverage project has taken a new turn. I had it just laying on the ground and it worked just fine. Last night I went out to add another 154 feet to it in order to give me 533 feet total lengt
/archives//html/Topband/2008-12/msg00255.html (9,538 bytes)

14. Topband: Matching Transformer (score: 1)
Author: "Lee K7TJR" <k7tjr@msn.com>
Date: Sun, 28 Dec 2008 11:20:51 -0800
A couple of observations on matching Bobs Beverage. First I cannot figure out why some are suggesting a Balun in addition to the fine Job Bob did making the ISOLATED winding matching transformer. Unl
/archives//html/Topband/2008-12/msg00257.html (9,903 bytes)

15. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 28 Dec 2008 13:19:44 -0800
Au contrair! See work by N6LF, which strongly suggests that there are resonance effects, especially with only a few radials. 73, Jim K9YC _______________________________________________ Topband maili
/archives//html/Topband/2008-12/msg00258.html (9,310 bytes)

16. Re: Topband: Matching Transformer (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Sun, 28 Dec 2008 16:03:33 -0600
ok just got through raising the wire off the ground and it doesn't seem to have affected the tuning any so we will see tonight. At least the little buggers wont be able to get to it to gnaw on it any
/archives//html/Topband/2008-12/msg00260.html (8,476 bytes)

17. Re: Topband: Matching Transformer (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Sun, 28 Dec 2008 19:31:13 -0500
The only resonance effects occur when the radial system is insufficient to provide a proper return. No matter the length of the radials, when there are enough radials that the spacing between the en
/archives//html/Topband/2008-12/msg00263.html (10,021 bytes)

18. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 28 Dec 2008 20:37:33 -0800
Yes. That's what I said -- "especially with only a few radials." I'd bet that the vast majority of radial systems consist of 4-8 radials. Remember that most hams live on small lots. Yes, I have 60+ r
/archives//html/Topband/2008-12/msg00265.html (9,365 bytes)

19. Re: Topband: Matching Transformer (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 28 Dec 2008 23:00:25 -0800
Walk a mile in the other guy's shoes. A typical city lot is 25- 35 ft wide, and the house will run as close to the edges as building and zoning codes allow. There may be a small back yard. I had what
/archives//html/Topband/2008-12/msg00266.html (9,078 bytes)

20. Topband: Matching Transformer (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 29 Dec 2008 05:27:37 -0800 (PST)
Many hams have very limited space for a radial field... If they can only get 8 or 12 radials on the ground, then they need to read Rudy Severn, N6LF carefully, until they understand what his research
/archives//html/Topband/2008-12/msg00267.html (7,641 bytes)

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