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References: [ +from:mathenyr@marietta.edu: 19 ]

Total 19 documents matching your query.

1. [TowerTalk] Rohn 25 + M2 Skiplog (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Sun, 27 Apr 2008 12:07:37 -0400 (EDT)
Local conditions are as follows: Hilltop location, max winds in any reasonable period of time 70MPH. 50 MPH considered a big one, but a few of those each year. Tower guyed 4 ways, at 30 and 60 feet s
/archives//html/Towertalk/2008-04/msg00608.html (7,738 bytes)

2. Re: [TowerTalk] Fwd: Re: Most Connectors sold to Hams are JUNK (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Mon, 19 May 2008 20:13:33 -0400 (EDT)
Between-series connectors were made for testing and bench work--not long-term installations. Correct answer: Use the CORRECT CONNECTOR and, IF you install it correctly, it will work just great. Ralph
/archives//html/Towertalk/2008-05/msg00342.html (8,416 bytes)

3. Re: [TowerTalk] Coil Formula (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Mon, 26 May 2008 15:45:16 -0400 (EDT)
You need to download a package of software written by VE3ERP. I think it is now on the CQ website, called "Hamcalc". While I don't have the formula handy, the program is easier and has dozens of good
/archives//html/Towertalk/2008-05/msg00464.html (7,929 bytes)

4. Re: [TowerTalk] Tarheel Antennas (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Tue, 12 Aug 2008 18:51:16 -0400 (EDT)
Yes, they are good guys. I bought a used Tarheel, and the support has been just as good as though I had been the original buyer. Most outfits don't wanna talk to the "second owner" of anything. Not t
/archives//html/Towertalk/2008-08/msg00300.html (8,657 bytes)

5. Re: [TowerTalk] Log Periodic Choice (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Fri, 12 Sep 2008 20:43:02 -0400 (EDT)
Well, I'd say that ALL antennas with the limited boomlength have "little gain" by just about any standard. Thus other issues come into play: pattern, mechanical issues, reliability. In my opinion, th
/archives//html/Towertalk/2008-09/msg00217.html (9,321 bytes)

6. Re: [TowerTalk] Log Periodic Choice (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Sun, 14 Sep 2008 13:45:59 -0400 (EDT)
NO disrespect intended, but I frankly don't put a lot of stock in one set of antenna "measurement" over another set. Indeed one might be able to make comparisions between several antennas and find a
/archives//html/Towertalk/2008-09/msg00252.html (8,497 bytes)

7. Re: [TowerTalk] 'new' technique for feeding towers. (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Thu, 25 Sep 2008 12:25:06 -0400 (EDT)
Use skirt feed here with considerable success. I have a 70' tower with a 40M beam on top, and I use skirt wires to "shunt feed" the tower on 80 and 160. It has worked well; I use 4 wires, spaced out
/archives//html/Towertalk/2008-09/msg00517.html (8,068 bytes)

8. [TowerTalk] 43 foot vertical feed (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Sun, 8 Feb 2009 11:25:56 -0500 (EST)
A couple comments. First off, the thing can be tuned from the shack with an "unbalanced openwire" feed, simply a wire carefully insulated from earth with, ideally, a number of parallel wires under it
/archives//html/Towertalk/2009-02/msg00176.html (7,981 bytes)

9. Re: [TowerTalk] 43 foot vertical feed (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Sun, 8 Feb 2009 16:57:30 -0500 (EST)
Yeap, I use a folded unipole, and it doesn't have to be a "quarter wave" to radiate well. The system I proposed isn't of my invention, but comes from an old (and highly respected) antenna text, Lapor
/archives//html/Towertalk/2009-02/msg00180.html (12,371 bytes)

10. Re: [TowerTalk] 43 foot vertical feed (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Sun, 8 Feb 2009 16:58:21 -0500 (EST)
Hmmmm...I guess the bigger they are, the harder they fall??? Ralph Matheny K8RYU 207 Gibbons Place Marietta Ohio 45750 mathenyr@marietta.edu _______________________________________________ __________
/archives//html/Towertalk/2009-02/msg00181.html (7,994 bytes)

11. Re: [TowerTalk] Radial material choice and effect (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Fri, 20 Feb 2009 20:39:16 -0500 (EST)
Well, with that amount of copper you are all set. 30 or more radials, each 50 feet long at 80 meters will make a pretty decent ground. Good luck! Ralph Matheny K8RYU 207 Gibbons Place Marietta Ohio 4
/archives//html/Towertalk/2009-02/msg00533.html (11,621 bytes)

12. Re: [TowerTalk] telephone poles from the electric co. (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Wed, 3 Jun 2009 11:21:10 -0400 (EDT)
When I was a kid I had a power pole, the guy at the electric company got it for me and they dropped it into the hole I dug, with some help. It was only 35 feet or so, but a great thing for a kid ham
/archives//html/Towertalk/2009-06/msg00073.html (9,459 bytes)

13. Re: [TowerTalk] full wave loop height (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Fri, 25 Sep 2009 11:56:02 -0400 (EDT)
Based upon my experience using the loops of various sizes on Field Day, there is not much point to the loop unless it is 35 or 40 above ground, and best at 60 or better. Then, however, I am convinced
/archives//html/Towertalk/2009-09/msg00449.html (8,527 bytes)

14. [TowerTalk] Telewave antenna (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Wed, 22 Aug 2012 12:58:57 -0400 (EDT)
I'm about to purchase a 4-pole antenna for our local club repeater. Does anyone have any direct experience with the Telewave ANT150D-6-9 antenna? I'm looking for comments regarding construction, weat
/archives//html/Towertalk/2012-08/msg00268.html (7,197 bytes)

15. [TowerTalk] Looking for..... (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Fri, 8 Nov 2013 12:14:02 -0500 (EST)
Before I throw lots of money at these rather than a little money, does anybody have: 1) A Brake Wench as used on the Rohn 25 they would like to sell, loan or rent?? Best be in my area as the thing is
/archives//html/Towertalk/2013-11/msg00134.html (7,353 bytes)

16. [TowerTalk] gin pole for Rohn45 (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Wed, 6 Aug 2014 18:58:40 -0400 (EDT)
I'm looking to beg, borrow, steal or buy a gin pole for #45 for a small tower job. I'm in SE Ohio, so I'd like to find one nearby...have one located in Dayton and in Michigan (5 hours drive) and hope
/archives//html/Towertalk/2014-08/msg00157.html (6,738 bytes)

17. [TowerTalk] Turnbuckles (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Mon, 11 May 2015 13:32:56 -0400 (EDT)
I have about 8 7/8" turnbuckles, about 30 inches long extended which are surplus to my needs. If anybody has a big tower job planned they might be just what is needed. They are not perfect but look q
/archives//html/Towertalk/2015-05/msg00119.html (6,677 bytes)

18. [TowerTalk] JK Navassa antenna (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Mon, 22 Jun 2015 14:29:54 -0400 (EDT)
Does anybody have any direct experience with this antenna? I looked at it at Dayton, as an item for our club to purchase, and I'm wondering how it works out for real users. de K8RYU _________________
/archives//html/Towertalk/2015-06/msg00248.html (6,805 bytes)

19. [TowerTalk] Navassa antenna (score: 1)
Author: Ralph Matheny K8RYU <mathenyr@marietta.edu>
Date: Tue, 30 Jun 2015 15:43:36 -0400 (EDT)
Thanks to all who responded re the antenna. Not looking for a high-gain device, just something that will last years that is small enough to get into the space available. Don't like traps, they work w
/archives//html/Towertalk/2015-06/msg00321.html (6,765 bytes)

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