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Total 905 documents matching your query.

1. Re: [TowerTalk] HyTower guying (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Fri, 21 Dec 2012 13:19:42 -0600
There is an alternative to Big Grips, which uses epoxy to form an enlarged end on the Phillystran to terminate it. I don't think making a fairly sharp bend in Phillystran is conducive to a long servi
/archives//html/Towertalk/2012-12/msg00108.html (9,880 bytes)

2. Re: [TowerTalk] Phillystran questions (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sat, 22 Dec 2012 09:21:29 -0600
Thanks for your thoughts. The Hy-Tower is a design from the 50's and the engineering information from the current producer, by no fault of their own, is unfortunately in poor condition, i.e. a copy o
/archives//html/Towertalk/2012-12/msg00113.html (15,264 bytes)

3. Re: [TowerTalk] beam antenna truss (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 23 Dec 2012 19:30:06 -0600
Don't use nylon as it is too stretchy. Don't use polypropylene as it lacks UV resistance (Good water ski rope though) Dacron is a good very low stretch rope, preferably treated for UV resistance but
/archives//html/Towertalk/2012-12/msg00119.html (9,547 bytes)

4. Re: [TowerTalk] Fwd: Re: Earthing a tower (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 30 Dec 2012 11:17:11 -0600
I have a friend who is a ham and is EE with 30+ years of antenna design experience. He tells me emphatically, "concrete is not a good conductor." Given this, I'd be trying to not depend on concrete a
/archives//html/Towertalk/2012-12/msg00193.html (9,737 bytes)

5. Re: [TowerTalk] Motorized Winch for US Tower (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Tue, 1 Jan 2013 13:52:28 -0600
Two things: 1. Those Milwaukee drills don't stop turning when whatever you are spinning in their chuck does stop and will wrap you up and jam you into the trigger so you can't let go and can hurt you
/archives//html/Towertalk/2013-01/msg00006.html (13,310 bytes)

6. Re: [TowerTalk] Bye Bye Birdies (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Fri, 04 Jan 2013 13:52:55 -0500
Plastic owls and rubber snakes work for some folks but are not universally successful. Ultrasonic emissions have a much higher success record. Ultrasonic waves are easy to "beam" directionally which
/archives//html/Towertalk/2013-01/msg00032.html (10,768 bytes)

7. Re: [TowerTalk] Bye Bye Birdies (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sat, 5 Jan 2013 11:43:26 -0600
I bought two kinds of COTS equipment. One was from Sharper Image catalog. I don't recall the other. This was over 20 years ago. I helped a friend build a system subsequently using Radio Shack piezo-e
/archives//html/Towertalk/2013-01/msg00075.html (15,233 bytes)

8. Re: [TowerTalk] Bye Bye Deer (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sat, 5 Jan 2013 12:04:50 -0600
I kept cats and dogs (and the postman) out of my front yard with an IR motion detector used to turn on a used dishwasher water solenoid valve between the hose bib and a RainBird sprinkler. The postma
/archives//html/Towertalk/2013-01/msg00077.html (11,701 bytes)

9. Re: [TowerTalk] Bye Bye Deer (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Wed, 9 Jan 2013 08:30:41 -0600
Deer can jump high or wide but not both at the same time. A horizontal extension to the top of a fence can work well (highly visible.) Flagging or otherwise making wires visible does help. I change m
/archives//html/Towertalk/2013-01/msg00122.html (14,909 bytes)

10. Re: [TowerTalk] yagi f/b and rx s/n (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 13 Jan 2013 08:27:27 -0600
It depends... If reducing QRM and QRN from other directions than your beam heading produces a higher signal to signal plus noise ratio than optimizing for max forward gain then minimizing the side an
/archives//html/Towertalk/2013-01/msg00147.html (9,862 bytes)

11. [TowerTalk] minimum rotator for hex beam (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Wed, 16 Jan 2013 14:32:12 -0600
I was hoping to get some advice regarding "right sizing" a rotator to use with a 6 band hex beam. I don't want to get carried away with a monster rotator (waste of $) nor do I want to err on the side
/archives//html/Towertalk/2013-01/msg00202.html (8,880 bytes)

12. Re: [TowerTalk] bonding to AC power box or inside fuse panel? (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Mon, 21 Jan 2013 17:07:27 -0600
Did you mean to say you were connecting the RF ground buss to the breaker panel? All the equipment tied to a single point and that single point either is or is run to round rods, metal under ground w
/archives//html/Towertalk/2013-01/msg00229.html (10,273 bytes)

13. Re: [TowerTalk] bonding to AC power box or inside fuse panel? (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Tue, 22 Jan 2013 13:11:29 -0600
Thank you very much for providing the information I needed to see the error of my ways, well, the error in the ways of the folks who advised me and were dead wrong. I had recently moved my station fr
/archives//html/Towertalk/2013-01/msg00250.html (13,015 bytes)

14. Re: [TowerTalk] Rebar base for new 18HT installation? (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Tue, 22 Jan 2013 14:00:08 -0600
In general, for standard mixes, as concrete cures it achieves 90% of its final strength in 28 days. Depending on the safety factor inherent in your design, your concrete may be adequately cured soone
/archives//html/Towertalk/2013-01/msg00253.html (12,957 bytes)

15. Re: [TowerTalk] Hose Clamps (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 27 Jan 2013 07:57:12 -0600
There are "stainless" hose clamps and then there are ALL stainless hose clamps. Value engineering can result in hose clamps for which the band is stainless but the screw isn't. How do you tell withou
/archives//html/Towertalk/2013-01/msg00288.html (10,843 bytes)

16. [TowerTalk] Bird and pest repellents (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 27 Jan 2013 10:12:08 -0600
Fairly recently there was an interest shown here in keeping deer and other pests away from where they are not wanted. Also birds on antennas and towers was an issue of interest. Well, I just received
/archives//html/Towertalk/2013-01/msg00290.html (12,126 bytes)

17. Re: [TowerTalk] Hose Clamps (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Sun, 27 Jan 2013 11:02:38 -0600
OOPS... Thanks for the correction, Jim. I wasn't thinking aluminum but should have been. Tighten stainless steel clamps on aluminum tubes when cold!!!!!!!!!! Thanks again for the correction. 73, Patr
/archives//html/Towertalk/2013-01/msg00293.html (9,987 bytes)

18. Re: [TowerTalk] Hose Clamps (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Thu, 31 Jan 2013 06:53:55 -0600
GE Silicone II is rated for 50 years. That or similar will plug tubes longer and better than any of the caps provided by Mississippi's Finest Junk or related brands (or just about any MFGs provided c
/archives//html/Towertalk/2013-01/msg00331.html (9,210 bytes)

19. Re: [TowerTalk] Refitting existing concrete base (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Thu, 31 Jan 2013 12:48:54 -0600
You need to go to the required lengths to ensure the new work is well attached to the old concrete. Drilling holes and doweling is a common practice. Use a large powerful hammer drill and carbide mas
/archives//html/Towertalk/2013-01/msg00347.html (10,970 bytes)

20. Re: [TowerTalk] Caps (was: Hose Clamps) (score: 1)
Author: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Fri, 1 Feb 2013 07:58:10 -0600
Here in Oklahoma we have insects we call "Mud Daubers" (look like wasps) that tend to close off most any openings they encounter with mud which dries to a good seal. Unfortunately, the holes most oft
/archives//html/Towertalk/2013-02/msg00002.html (8,792 bytes)


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