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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+1\/8\s+wave\s+vertical\s*$/: 19 ]

Total 19 documents matching your query.

1. Topband: 1/8 wave vertical (score: 1)
Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Mon, 24 Dec 2007 11:42:03 -0600
Will an 1/8 wave vertical work for top band or do you have to start with 1/4 wave? Perhaps top loading it would work?? 73 frm AD5VJ Merry Christmas to All EVERYWHERE !! Because whether you know Jesus
/archives//html/Topband/2007-12/msg00173.html (6,836 bytes)

2. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Chortek, Robert L" <Robert.Chortek@berliner.com>
Date: Mon, 24 Dec 2007 13:39:45 -0800
with 1/4 wave? Perhaps top loading it would work?? I can confirm that a 1/8 wave vertical WILL WORK on 160. I have a 60ft vertical base loaded with a 7" diameter coil made of 1/4" copper tubing and t
/archives//html/Topband/2007-12/msg00176.html (8,063 bytes)

3. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Mon, 24 Dec 2007 19:18:45 -0800
The taller the antenna, the better it will work (up to at least 1/4 wave). Top loading can make a short antenna more closely approach the performance of a quarter wave. Think of it this way, Bob. It'
/archives//html/Topband/2007-12/msg00179.html (8,685 bytes)

4. Re: Topband: 1/8 wave vertical (score: 1)
Author: Bj&ouml;rn Mohr <bm@broadcast.se>
Date: Tue, 25 Dec 2007 10:49:32 +0100
Bob, I am using a 60 ft toploaded vertical with two elevated radials. In the past two seasons I have worked a 100+ DXCC using this antenna. Here are the details of the antenna; The antenna is support
/archives//html/Topband/2007-12/msg00182.html (8,002 bytes)

5. Topband: 1/8 wave vertical (score: 1)
Author: doktorij@bellsouth.net
Date: Wed, 26 Dec 2007 13:20:54 +0000
For what it's worth, I started out with a 55' base loaded vertical and it worked OK. It was not the best for DX with 100W, but did manage to work the folks with good ears. I went to a 78' vertical al
/archives//html/Topband/2007-12/msg00188.html (7,583 bytes)

6. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Wed, 26 Dec 2007 09:51:27 -0500
The most difficult to deal with loss in a vertical antenna, once it is 1/8th wave tall or taller, is in the ground system. While it is possible to do something wrong, like make the antenna out of a t
/archives//html/Topband/2007-12/msg00189.html (8,713 bytes)

7. Re: Topband: 1/8 wave vertical (score: 1)
Author: "herbs@vitelcom.net" <herbs@vitelcom.net>
Date: Wed, 26 Dec 2007 11:28:28 -0400
It is just short of amazing what sort of efficiency you will gain if an 1/8 wave pole is top loaded even with the top guy wires connected down to 20% before insulators and then connecting a jumper w
/archives//html/Topband/2007-12/msg00190.html (8,613 bytes)

8. Re: Topband: 1/8 wave vertical (score: 1)
Author: Niko Cimbur <ac6dd@yahoo.com>
Date: Wed, 26 Dec 2007 11:50:03 -0800 (PST)
difference at all between top loading, center loading, or base loading. The exception would be a poor loading coil design, for example a coil that was approaching self-resonance at the operating fre
/archives//html/Topband/2007-12/msg00192.html (9,896 bytes)

9. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Wed, 26 Dec 2007 13:54:29 -0800
Tom, One thing to consider is that many folks who are using short verticals are doing so because they live on small lots. Because of this a good ground system isn't always practical. I've paved or wi
/archives//html/Topband/2007-12/msg00193.html (10,089 bytes)

10. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Wed, 26 Dec 2007 20:07:59 -0500
So long as loss in the loading system doesn't increase more than loss by ground current reduction decreases, that's true. It's a mixture of several things and we can't focus just on one thing. It's
/archives//html/Topband/2007-12/msg00194.html (10,325 bytes)

11. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Wed, 26 Dec 2007 21:52:05 -0800
I think the numbers you are citing above are spot on, but I would argue that even even as little 1dB improvement in EIRP is worth going after, especially if you are dealing with a compromise system (
/archives//html/Topband/2007-12/msg00195.html (9,692 bytes)

12. Topband: 1/8 wave vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 27 Dec 2007 04:49:18 -0800 (PST)
but I've had so many 160 QSOs that were just on the margin, I can't help but think that 1dB shouldn't be neglected. ** Right, and on both ends.... Last night for example - every time I called CQ DX o
/archives//html/Topband/2007-12/msg00196.html (7,136 bytes)

13. Re: Topband: 1/8 wave vertical (score: 1)
Author: PaulKB8N@aol.com
Date: Thu, 27 Dec 2007 08:03:45 EST
but I've had so many 160 QSOs that were just on the margin, I can't help but think that 1dB shouldn't be neglected. The human ear cannot tell a 1dB difference, but the receiver AGC sure can! Paul, K5
/archives//html/Topband/2007-12/msg00197.html (8,030 bytes)

14. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Thu, 27 Dec 2007 10:13:18 -0500
There is no disputing 1dB is worthwhile in the rare situation where a signal is hanging right at copy threshold, but I think someone well-versed with signals, noise, and statistics would have fun wi
/archives//html/Topband/2007-12/msg00198.html (7,747 bytes)

15. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 27 Dec 2007 07:45:04 -0800
WRONG! WRONG! WRONG! Mistatement of reality. It depends completely on the conditions under which the 1 dB change is made. A 1 dB change in the total loudness of sound IS about what most listeners ca
/archives//html/Topband/2007-12/msg00199.html (8,610 bytes)

16. Re: Topband: 1/8 wave vertical (score: 1)
Author: PaulKB8N@aol.com
Date: Thu, 27 Dec 2007 13:05:07 EST
WRONG! WRONG! WRONG! Mistatement of reality. It depends completely on the conditions under which the 1 dB change is made. Let's be a little more cordial, please! Something like, "..in most cases, a o
/archives//html/Topband/2007-12/msg00201.html (8,801 bytes)

17. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Raoul Coetzee" <raoulc@smmcape.co.za>
Date: Thu, 27 Dec 2007 20:18:42 +0200
The 160m dilemma: If you can be heard but do not 'hear' well, you are deaf and a crocodile. But if you need the extra db on tx while trying to break the pile up for the rare dx you need? I think do
/archives//html/Topband/2007-12/msg00202.html (8,004 bytes)

18. Re: Topband: 1/8 wave vertical (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Thu, 27 Dec 2007 16:27:33 -0500
AGC doesn't work that way. It isn't a volume expander or gated threshold. It is a long time hold gain control that operates on the total peak power in the bandwidth of the system up to the point whe
/archives//html/Topband/2007-12/msg00205.html (8,759 bytes)

19. Topband: 1/8 wave vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 28 Dec 2007 05:53:43 -0800 (PST)
1dB can be significant at times, but: An extra dB of transmit on 160 at my station will be somewheres North of five grand... For improved receive I just destroyed a number of weekends since September
/archives//html/Topband/2007-12/msg00209.html (7,861 bytes)

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