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Total 20 documents matching your query.

1. [TowerTalk] A Question of GAIN (score: 1): Author: jlogan@bewellnet.com (Josh Logan); Date: Sun, 18 Oct 1998 16:17:14 -0600; Assume a person built a 4 stack of C3 Force 12 multi band yagis The C3 is given 4.6 dbd net gain for 20m IF stacked at say 35ft, 65 ft, 95 ft and 125 ft What would be resulting GAIN? I would guess ar; /archives//html/Towertalk/1998-10/msg00597.html (8,207 bytes)
2. [TowerTalk] A Question of GAIN (score: 1): Author: jlangdon@outer.net (John Langdon); Date: Sun, 18 Oct 1998 18:15:15 -0500; I make it 4.6 dBd for the first one, +3 dB for the second one, plus 3 dB more for doubling from 2 antennas to 4 => 10.6 dBd This is borne out by my experience with a mixed stack of C3's and C4XL's at; /archives//html/Towertalk/1998-10/msg00599.html (10,099 bytes)
3. [TowerTalk] A Question of GAIN (score: 1): Author: CQK8DO@aol.com (CQK8DO@aol.com); Date: Mon, 19 Oct 1998 08:38:41 EDT; Josh, each time you double the number of antennas in an array you get a maximum of 2 + a fraction dB.... The very best you are going to see with a 4 stack is 9 + - dB (roughly)... And secondly, on hf; /archives//html/Towertalk/1998-10/msg00631.html (8,974 bytes)
4. [TowerTalk] A Question of GAIN (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Mon, 19 Oct 1998 08:08:51 -0700; Josh, I think it would go more like: 4.6 (for array element) + 3 (for the next one) + 3 (for the next two) - (losses in harness and connectors) So I wouldn't expect more than 10 dBd net. And then onl; /archives//html/Towertalk/1998-10/msg00645.html (8,943 bytes)
5. [TowerTalk] A Question of GAIN (score: 1): Author: n7ml@imt.net (Mike Lamb); Date: Mon, 19 Oct 1998 15:52:26 -0600; Denny, I must disagree with you based strictly on experience. Others, please forgive me repeating myself from an earlier message. I have six stacked triband yagis on a 190 ft. rotating tower. It work; /archives//html/Towertalk/1998-10/msg00648.html (10,753 bytes)
6. [TowerTalk] A Question of GAIN (score: 1): Author: Guy Olinger, K2AV" <k2av@qsl.net (Guy Olinger, K2AV); Date: Mon, 19 Oct 1998 12:15:58 -0400; When stacks are modeled, you can see changes in element currents of the adjacent yagis, they are not independent of one another. These changes reduce the 3db intuitive figure to something over 2db, d; /archives//html/Towertalk/1998-10/msg00649.html (11,194 bytes)
7. [TowerTalk] A Question of GAIN (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Mon, 19 Oct 1998 09:38:34 -0700; Hi Guy, I'm sure that it would indeed be less than 10 dBd. I was just trying to put a number on it that it could never possibly exceed no matter what that was 3 dB below his expectations. I have no w; /archives//html/Towertalk/1998-10/msg00651.html (11,562 bytes)
8. [TowerTalk] A Question of GAIN (score: 1): Author: Guy Olinger, K2AV" <k2av@qsl.net (Guy Olinger, K2AV); Date: Mon, 19 Oct 1998 12:53:13 -0400; Trying hard to keep this apples and oranges and not mix the two. 1) The change in maximum peak gain (peak gain forward counting peak at *any* angle of takeoff on *either* beam or combination) is goin; /archives//html/Towertalk/1998-10/msg00654.html (11,534 bytes)
9. [TowerTalk] A Question of GAIN (score: 1): Author: n7ml@imt.net (Mike Lamb); Date: Mon, 19 Oct 1998 18:22:15 -0600; Hello Guy, I forgot to tell you that I have a single KT-34a that is on an 89 foot self-supporting crank up tower. I have at times put in a coax switch that allows A/B testing. When I am working a Eur; /archives//html/Towertalk/1998-10/msg00658.html (13,349 bytes)
10. [TowerTalk] A Question of GAIN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 19 Oct 1998 13:59:05 -0400; Hi all.. Antenna's develop "gain" because of cancellation of radiation in unwanted directions. In order to have gain, the system must force a null into what once was an area of appreciable radiation.; /archives//html/Towertalk/1998-10/msg00659.html (11,549 bytes)
11. [TowerTalk] A Question of GAIN (score: 1): Author: broz@csn.net (John Brosnahan); Date: Mon, 19 Oct 1998 20:29:31 -0600 (MDT); Mike (and Eric), When I first started playing with my four-stack of 8L Yagis on 10M 40/80/120/160ft) and also had a single 8L Yagi on another tower (80ft) I was astonded at the differences in intelli; /archives//html/Towertalk/1998-10/msg00678.html (10,626 bytes)
12. [TowerTalk] A Question of GAIN (score: 1): Author: Guy Olinger, K2AV" <k2av@qsl.net (Guy Olinger, K2AV); Date: Mon, 19 Oct 1998 23:02:52 -0400; Hi again, I accidentally sent N7CL an unfinished version of this. Comments interspersed below. That assumes a broad front largely invariant signal being received. If it is possible on H.F. to have mu; /archives//html/Towertalk/1998-10/msg00685.html (15,549 bytes)
13. [TowerTalk] A Question of GAIN (score: 1): Author: n4kg@juno.com (T A RUSSELL); Date: Tue, 20 Oct 1998 03:07:27 -0600; N4KG comments below. On Mon, 19 Oct 1998 20:29:31 -0600 (MDT) John Brosnahan <broz@csn.net> writes: When N4AR built a 4 high stack for 10M spaced every 30 ft, he observed considerable "echo" on some; /archives//html/Towertalk/1998-10/msg00691.html (12,107 bytes)
14. [TowerTalk] A Question of GAIN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 20 Oct 1998 09:00:29 -0400; Hi John, This is all explained in my most recent reply to Eric written yesterday. the single distortion paths Thanks for the input. It validates an effect I have long noticed on 160 and 80 meters, an; /archives//html/Towertalk/1998-10/msg00698.html (10,475 bytes)
15. [TowerTalk] A Question of GAIN (score: 1): Author: broz@csn.net (John Brosnahan); Date: Tue, 20 Oct 1998 09:04:13 -0600 (MDT); Tom, I didn't read all of the mail on this subject until after I posted my comment. And my comment was just a simplistic observation in support of the advantages of stacks. Just glad that we agree on; /archives//html/Towertalk/1998-10/msg00711.html (11,628 bytes)
16. [TowerTalk] A Question of GAIN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 20 Oct 1998 11:46:44 -0400; Hi John, We'll have to disagree on that one John. If you have the time and inclination, we'll talk about it. But I'm in some pretty good company on this one. directors Whereas the quad has that Ditto; /archives//html/Towertalk/1998-10/msg00721.html (10,148 bytes)
17. [TowerTalk] A Question of GAIN (score: 1): Author: k2av@qsl.net (Guy Olinger, K2AV); Date: Tue, 20 Oct 1998 18:35:28 GMT; Try to start off without all the quotes, think everyone has them all... My take on the multipathing was to demonstrate to a doubter that it was not possible to figure the behaviour of a stack on rece; /archives//html/Towertalk/1998-10/msg00735.html (10,640 bytes)
18. [TowerTalk] A Question of GAIN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 21 Oct 1998 08:47:58 -0400; Hi Guy, Tom me? I didn't mean to imply null filling or movement is not important. I said (a long time ago) null filling was the advantage of a stack, not gain improvement. My point is improved direct; /archives//html/Towertalk/1998-10/msg00763.html (9,581 bytes)
19. [TowerTalk] A Question of GAIN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 21 Oct 1998 08:48:05 -0400; Hi Guy, Tom me? I didn't mean to imply null filling or movement is not important. I said (a long time ago) null filling was the advantage of a stack, not gain improvement. My point is improved direct; /archives//html/Towertalk/1998-10/msg00764.html (9,136 bytes)
20. [TowerTalk] A Question of GAIN (score: 1): Author: k2av@qsl.net (Guy Olinger, K2AV); Date: Wed, 21 Oct 1998 19:12:00 GMT; On Wed, 21 Oct 1998 08:47:58 -0400, "w8ji.tom" <w8ji.tom@MCIONE.com> wrote: OK, gets hard to keep stuff straight with all the quotes, etc. OK again. Names from the Who's Who... It sounded on surface; /archives//html/Towertalk/1998-10/msg00780.html (9,624 bytes)

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