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Total 13 documents matching your query.

1. [TowerTalk] Best mast location? (score: 1): Author: "Fredric T. Serota" <fserota@msn.com>; Date: Wed, 12 May 2010 13:53:10 -0400; Have a 55 ft tower rated at 18 sq ft (TX 455) a 15 ft mast and a 150 LB - 17 sqft multiband beam (SteppIR DB36). Question is how far up the mast should I mount the antenna? Would like to get to at le; /archives//html/Towertalk/2010-05/msg00247.html (6,633 bytes)
2. Re: [TowerTalk] Best mast location? (score: 1): Author: "Gene Smar" <ersmar@verizon.net>; Date: Wed, 12 May 2010 15:12:21 -0400; Fred: The 18 sqft rating of the tower is probably based on having the antenna load no more than 2 feet above the top of the tower. Check the tower manufacturer's specs for the derivation of this figu; /archives//html/Towertalk/2010-05/msg00248.html (8,111 bytes)
3. Re: [TowerTalk] Best mast location? (score: 1): Author: "David Thompson" <thompson@mindspring.com>; Date: Wed, 12 May 2010 16:59:11 -0400; Fred, Unless US Tower changed their specs that 18 sq feet is with a beam mounted just above the tower top by no more than 2 feet. You are taking a gamble on moving the beam up to 7 or 8 feet above th; /archives//html/Towertalk/2010-05/msg00251.html (8,195 bytes)
4. Re: [TowerTalk] Best mast location? (score: 1): Author: "Fredric T. Serota" <fserota@msn.com>; Date: Wed, 12 May 2010 17:30:07 -0400; Thanks for responding. Actually, I have read and re-read "Up The Tower" several times. It actually doesn't give specifics about where on the mast to go. I don't understand why they sell 15' reinforce; /archives//html/Towertalk/2010-05/msg00252.html (11,319 bytes)
5. Re: [TowerTalk] Best mast location? (score: 1): Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>; Date: Wed, 12 May 2010 20:15:15 -0400; This brings up a point I think many may miss. The rotator should be mounted DOWN IN THE TOWER! That's emphasis, not shouting.<:-)) IOW if you have a 15' mast then all but 2' of it "in this case" shou; /archives//html/Towertalk/2010-05/msg00253.html (16,314 bytes)
6. Re: [TowerTalk] Best mast location? (score: 1): Author: "Mike" <noddy1211@sbcglobal.net>; Date: Wed, 12 May 2010 17:18:09 -0700; I can tell that if you talk to US Towers and ask what their wind load and Antenna square footage is based on, they will tell you one foot above the top of the tower. Anything else and you're on your; /archives//html/Towertalk/2010-05/msg00254.html (12,420 bytes)
7. Re: [TowerTalk] Best mast location? (score: 1): Author: K7LXC@aol.com; Date: Thu, 13 May 2010 08:20:15 EDT; several times. It actually doesn't give specifics about where on the mast to go. I don't understand why they sell 15' reinforced masts if they want you to put the beam right on top of the mast. Only; /archives//html/Towertalk/2010-05/msg00260.html (9,582 bytes)
8. [TowerTalk] Best mast location? (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Fri, 14 May 2010 04:42:04 -0700; It more than likely has to do with things not related to antennas or even towers at all. It's far less expensive to use standard stock lengths of material. IOW tube, angle, and flat stock, comes in 2; /archives//html/Towertalk/2010-05/msg00277.html (14,213 bytes)
9. Re: [TowerTalk] Best mast location? (score: 1): Author: "DF3KV" <df3kv@t-online.de>; Date: Fri, 14 May 2010 20:30:02 +0200; I don´t use any thrust bearing at all but a home made slew ring rotator with the mast flanged to the top of it. To align two thrust bearings will be quite a task with a heavy mast. 73 Peter won't hav; /archives//html/Towertalk/2010-05/msg00283.html (8,478 bytes)
10. Re: [TowerTalk] Best mast location? (score: 1): Author: Grant Saviers <grants2@pacbell.net>; Date: Fri, 14 May 2010 12:52:16 -0700; For various reasons (some inherent in bearing manufacturing tolerances) three spaced bearings are almost never done in machinery - it's just too hard to get them/keep them aligned. Two bearings can h; /archives//html/Towertalk/2010-05/msg00285.html (10,888 bytes)
11. Re: [TowerTalk] Best mast location? (score: 1): Author: <john@kk9a.com>; Date: Fri, 14 May 2010 17:21:33 -0400; A good rotator should be able to handle the side load. The rotator has a bearing and adding a third bearing in between the top bearing and rotator just makes line up more difficult. Even with very la; /archives//html/Towertalk/2010-05/msg00286.html (8,656 bytes)
12. [TowerTalk] Best mast location? (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 15 May 2010 05:26:02 -0700; For various reasons (some inherent in bearing manufacturing tolerances) three spaced bearings are almost never done in machinery - it's just too hard to get them/keep them aligned. Two bearings can h; /archives//html/Towertalk/2010-05/msg00293.html (11,583 bytes)
13. Re: [TowerTalk] Best mast location? (score: 1): Author: "Peter Voelpel" <peter.voelpel@t-online.de>; Date: Sat, 15 May 2010 17:26:40 +0200; You don´t need a bearing then, just a plate from water resistant hard wood drilled or cut out just for the mast diameter. That is done at DR1A on all masts, no regular bearings at all except on the g; /archives//html/Towertalk/2010-05/msg00306.html (12,142 bytes)

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