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1. Re: [TowerTalk] Climbing is risky business (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Sat, 31 Jan 2004 13:54:48 -0500; When I got out of the Army in 1962, I took a job with a Motorola service station owned by Herb, W1DEO. One of my first tower jobs was to help take down a 40 footer on top of a flat roofed, two storey; /archives//html/Towertalk/2004-01/msg00523.html (10,121 bytes)
2. Re: [TowerTalk] Soldering PL-259s (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Sat, 07 Feb 2004 12:25:10 -0500; Mahlon Haunschild wrote: Hey, everyone. Remember the thread the other day about soldering PL-259s? Found the ideal tool for the purpose the other day at Wal-Mart: a Ronson "TechTorch" mini-torch. But; /archives//html/Towertalk/2004-02/msg00165.html (8,631 bytes)
3. Re: [TowerTalk] Ronson Torch (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Sat, 07 Feb 2004 14:29:36 -0500; ABowenN4OO wrote: Based on experience with the larger and older Bernzomatic model, I wonder how long that small tip will last. I guess we will find out before long. INK N4OO Sopchoppy, FL I did a sea; /archives//html/Towertalk/2004-02/msg00172.html (8,673 bytes)
4. Re: [TowerTalk] Ground Rods (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Tue, 04 May 2004 14:00:39 -0400; Cqtestk4xs@aol.com wrote: In a message dated 5/4/04 3:07:53 PM Greenwich Standard Time, wrt@dslextreme.com writes: Does it really matter to a multi-million volt lightning strike whether the ground is; /archives//html/Towertalk/2004-05/msg00062.html (9,265 bytes)
5. Re: [TowerTalk] Two Vertical Antennas (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 04 Aug 2004 23:02:44 -0400; Roger Parsons wrote: I have separate 7MHz and 10.1MHz quarter wave vertical antennas which are spaced about 60' Both have about 60 radials and the radial fields do therefore cross each other to some; /archives//html/Towertalk/2004-08/msg00116.html (9,034 bytes)
6. Re: [TowerTalk] tic ring in tandem (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Tue, 07 Sep 2004 11:18:29 -0400; Keith Dutson wrote: This does not sound like a good solution to me. Why not call TIC for a recommendation? They are always very helpful to me. Keith NM5G How about a simple DC servo system. A compara; /archives//html/Towertalk/2004-09/msg00107.html (8,588 bytes)
7. [TowerTalk] Tri band VHF/UHF antenna (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 29 Sep 2004 10:58:12 -0400; I want to put up a 6m/2m/70cm tri-band antenna. Any experience/comments on the Comet vs Diamond brands? Thanks, Roger -- Remember the USS Liberty (AGTR-5) http://ussliberty.org/ _____________________; /archives//html/Towertalk/2004-09/msg00679.html (7,355 bytes)
8. [TowerTalk] 4 SQ arrays (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Fri, 19 Nov 2004 09:29:58 -0500; For those using Comtek and other boxes that restrict one to 90 and 180 degree phasing, you can get an improved pattern by increasing the spacing between elements. A half wave across the diagonal seem; /archives//html/Towertalk/2004-11/msg00567.html (8,267 bytes)
9. Re: [TowerTalk] Another Tailtwister question (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Mon, 29 Nov 2004 19:39:06 -0500; Jim Lux wrote: At 04:31 PM 11/29/2004 -0600, Bill Aycock wrote: Barry- I think the Cap is really a phase control in the reversing circuit, not a starting Cap.. The value may be more critical than for; /archives//html/Towertalk/2004-11/msg00723.html (9,519 bytes)
10. Re: [TowerTalk] Another Tailtwister question (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Mon, 29 Nov 2004 19:39:22 -0500; Jim Lux wrote: At 04:31 PM 11/29/2004 -0600, Bill Aycock wrote: Barry- I think the Cap is really a phase control in the reversing circuit, not a starting Cap.. The value may be more critical than for; /archives//html/Towertalk/2004-11/msg00724.html (9,305 bytes)
11. Re: [TowerTalk] pushup mast source and other comments (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 29 Dec 2004 10:49:29 -0500; (about will go with ropes Do you clamp the rope around the eye, or at some distance? I'm having a tough time visualizing exactly what you're clamping here. Off hand, I love the idea of using inexpen; /archives//html/Towertalk/2004-12/msg00560.html (9,069 bytes)
12. Re: [TowerTalk] Re: Cutting braid (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Mon, 17 Jan 2005 11:32:07 -0500; W2RU - Bud Hippisley wrote: What I haven't seen mentioned in this series of postings about properly installing PL-259 connectors is a recommended wattage for the soldering iron or gun. My experience; /archives//html/Towertalk/2005-01/msg00675.html (10,883 bytes)
13. Re: [TowerTalk] MFJ-1025/1026 (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Mon, 24 Jan 2005 09:43:51 -0500; Tod - MN wrote: 4.To protect the Aux Antenna input, it employs a internal, soldered in, 12v dial lamp as a "fuse". If you are the careless kind you may want to modify this to avoid having to remove t; /archives//html/Towertalk/2005-01/msg01014.html (10,177 bytes)
14. Re: [TowerTalk] Create Antennas Web Page? (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 09 Feb 2005 10:05:25 -0500; Gary K9GS wrote: Hello all, I looked pretty hard on Google.... Does anyone have the URL for Create Antennas?? 73, Gary Hi Gary... Try this: http://www.cd-corp.com/eng/default.htm 73, Roger -- Remembe; /archives//html/Towertalk/2005-02/msg00230.html (7,966 bytes)
15. Re: [TowerTalk] How to check trap resonance (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 16 Feb 2005 10:27:47 -0500; john.brewer@us.schneider-electric.com wrote: Can anyone suggest a workable method of determining the resonant frequency of a set of traps off of a Cushcraft tribander? I've got a working GDO, but can; /archives//html/Towertalk/2005-02/msg00384.html (9,303 bytes)
16. Re: [TowerTalk] How to check trap resonance (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 16 Feb 2005 10:48:34 -0500; In the dark recesses of my memory, I remember seeing an article about determining trap L/C values by using an RF bridge to take measurements of the trap above and below the traps resonant refquency.; /archives//html/Towertalk/2005-02/msg00385.html (9,087 bytes)
17. [TowerTalk] lifts (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Tue, 05 Apr 2005 12:12:52 -0400; In my travels, I see a lot of portable lifts for rent. These are the type with an articulated arm mounted on a trailer. Has anyone had experience renting one of these for tower work. I'm not sure how; /archives//html/Towertalk/2005-04/msg00172.html (6,715 bytes)
18. Re: [TowerTalk] Bolts - Another Favorite Topic (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Sun, 24 Jul 2005 11:29:20 -0400; I hesitate to get into the bolt controversy as I'm not a mechanical engineer. I think the reason lock washers are not used is that they would not be effective on a round tower leg. Rohn uses fine thr; /archives//html/Towertalk/2005-07/msg00664.html (11,436 bytes)
19. Re: [TowerTalk] GR 1606-A (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Mon, 25 Jul 2005 09:44:46 -0400; Hi John... The greatest source of error is the capacitance of the connecting lead to ground. Section 4.4 on page 10 addresses this. Section 6 on page 16 covers correction for inductance in the R capa; /archives//html/Towertalk/2005-07/msg00716.html (7,811 bytes)
20. Re: [TowerTalk] MOV's (score: 1): Author: Roger D Johnson <n1rj@adelphia.net>; Date: Wed, 03 Aug 2005 20:40:28 -0400; series. They have 3 leads and are connected to some sort of indicator circuit which monitors their status. Mine are made by Littlefuse. More info here: http://www.littelfuse.co.kr/cgi-bin/r.cgi/prod_; /archives//html/Towertalk/2005-08/msg00077.html (8,986 bytes)

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