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Total 37 documents matching your query.

1. [TowerTalk] Vertical on metal building (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Fri, 1 Oct 2004 21:48:32 -0500
I wonder how a vertical would perform on top of my office building? Sheet metal roof. 20' high at center, 18' at eves. 160'X80' dimensions. I have a tripod bolted at the center that used to be for a
/archives//html/Towertalk/2004-10/msg00017.html (6,839 bytes)

2. [TowerTalk] New FCC chariman needs to be a HAM! (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Fri, 21 Jan 2005 17:18:20 -0600
I wonder if there is any way many hams could write congressmen or representatives and insist that the new FCC chairman should be a ham. This would give him ad advantage in many ways and perhapps help
/archives//html/Towertalk/2005-01/msg00935.html (8,001 bytes)

3. [TowerTalk] beveridge or what? (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sat, 5 Feb 2005 12:59:37 -0600
I would like to see what kind of a receive antenna or even transmit maybe I could build along my fence line. I have a 6' wood privacy fence around my back yard and it measures 337' all the way around
/archives//html/Towertalk/2005-02/msg00137.html (7,463 bytes)

4. [TowerTalk] Dumbing down? maybe a reason (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sun, 24 Jul 2005 12:17:44 -0500
I am a 58 year old ham, licensed since 1974 and an extra class since 1993. My wife, KA5EPM, is a general class, licensed since 1979. I have been interested in ham radio since the mid 50s but I did no
/archives//html/Towertalk/2005-07/msg00672.html (9,714 bytes)

5. [TowerTalk] Inverted v or flattop (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sun, 2 Oct 2005 22:07:04 -0500
I have 3 towers, a 53' 25g, a 52' crankup and a 30' 25G I can support a 40meter dipole from the 30' to 30' up the 53' tower as a flat top or pull the center support up to 50' on the crankup. So which
/archives//html/Towertalk/2005-10/msg00046.html (7,247 bytes)

6. [TowerTalk] Which mobile antenna (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Mon, 20 Feb 2006 20:38:59 -0600
I run a TS-B2000 mobile and it is a lot of fun I use a 5/8 wave antenna for 2 meters and a little tarheel antenna on a hatchback mount for hf. My question; Has anyone replaced the whip in a screwdriv
/archives//html/Towertalk/2006-02/msg00295.html (7,446 bytes)

7. [TowerTalk] Rotator help! (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Mon, 4 Sep 2006 10:54:42 -0500
I have a Yaesu g-400rc rotator that the indicator on the control box just spins whenever the power switch is turned on. the left and right controls still move the beam ok and I checked the pot in the
/archives//html/Towertalk/2006-09/msg00128.html (7,079 bytes)

8. [TowerTalk] Inverted v vs dipole at different heights (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sun, 5 Nov 2006 16:15:18 -0600
It seems that from the discussion about v's vs flattop that the flattop may be quieter. However when height of support structures becomes an issue is it better to use an inverted v with an apex at le
/archives//html/Towertalk/2006-11/msg00093.html (7,723 bytes)

9. [TowerTalk] decoupling feedline from a dipole (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sun, 12 Nov 2006 11:07:13 -0600
I hear that decoupling the feedline can reduce noise so what is the best way to do to. I have tried commercially made baluns in the past only to have them burn out at legal limit power levels. Is a c
/archives//html/Towertalk/2006-11/msg00262.html (7,515 bytes)

10. [TowerTalk] Computer RFI (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Wed, 22 Nov 2006 16:20:23 -0600
I am getting a lot of interference on the low bands from my pc but from 20 meters and up there seems to be none. The noise is very wideband and does not stop unless I unplug the computer from the ac
/archives//html/Towertalk/2006-11/msg00565.html (6,624 bytes)

11. [TowerTalk] computer rfi (score: 1)
Author: "Jim Miller WB5OXQ" <wb5oxq@grandecom.net>
Date: Sat, 25 Nov 2006 10:33:48 -0600
I replaced the ps with an Antec super quiet true 430 watt supply and noise is gone. thanks to all for suggestions. Now, How to get on 160 with a 135' wide lot? I might get permission to run 1 let acr
/archives//html/Towertalk/2006-11/msg00667.html (8,347 bytes)

12. [TowerTalk] Can't contact Force 12 (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Thu, 14 Jun 2007 22:50:42 -0500
I tried to email force 12 at 3 different email addresses and they all bounced. I was going to ask their opinion on a choke for their beams. _______________________________________________ ___________
/archives//html/Towertalk/2007-06/msg00455.html (7,002 bytes)

13. [TowerTalk] Question using balun on a hf beam (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Mon, 25 Jun 2007 19:44:04 -0500
I have a Force 12 C-3 hf beam and the manual told me to use a balun or a choke to connect the feedline to the driven element. I originally used a home wound choke of RG-213 on a piece of 4" pvc pipe.
/archives//html/Towertalk/2007-06/msg00741.html (8,039 bytes)

14. Re: [TowerTalk] New MF Broadcasting Array (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Wed, 4 Jul 2007 15:50:44 -0500
It seems that my research into the early days of radio broadcast showed that most stations used a simple variation of this antenna but with only 1 bi-directional dipole and sometimes a variable heigh
/archives//html/Towertalk/2007-07/msg00204.html (7,521 bytes)

15. [TowerTalk] Using a Alpha Delta balun on a Force 12 (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sun, 13 Apr 2008 19:08:15 -0500
I have a Force 12 C3 and I originally fed it with RG 213 direct connected to the driven element and it worked well until I got a lightning strike and then the swr went to 3 to 1 at resonance. So I re
/archives//html/Towertalk/2008-04/msg00279.html (8,566 bytes)

16. [TowerTalk] 6 meter antennas ? (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sat, 21 Jun 2008 21:30:01 -0500
With the upper band beginning to open up what are the favorite 6 meter antennas? I really don't have room for a beam. Jim WB5OXQ. _______________________________________________ _____________________
/archives//html/Towertalk/2008-06/msg00432.html (7,309 bytes)

17. Re: [TowerTalk] 6 meter antennas ? (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sat, 21 Jun 2008 23:52:21 -0500
I said I had no room for a beam and that is unless one can fit on the mast between my C3 tribander and a dual polarity 10 element 2 meter beam 10' above the hf tribander. The other problem is I have
/archives//html/Towertalk/2008-06/msg00444.html (9,453 bytes)

18. Re: [TowerTalk] Vertical on a chain link fence (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sat, 22 Nov 2008 16:13:25 -0600
Looks like it should work but the pattern would not be as omnidirectional as if there were more radials. I am tempted to mount a vertical on top of a metal roof building that is 100X300' that is 20'
/archives//html/Towertalk/2008-11/msg00564.html (9,622 bytes)

19. Re: [TowerTalk] Tram Coax (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sat, 20 Dec 2008 17:56:07 -0600
I use the Tram-Browning cables all the time for ham and commercial work. All my hf antennas are on the br-400 cable and you do need to be careful preparing the cable for connectors but I have never h
/archives//html/Towertalk/2008-12/msg00524.html (9,865 bytes)

20. Re: [TowerTalk] Quarter Wave Sloper (half sloper) (score: 1)
Author: "Jim Miller WB5OXQ in Waco" <wb5oxq@grandecom.net>
Date: Sun, 28 Dec 2008 15:18:47 -0600
I have the 160-80-40 twin sloper attached at 50' on a rohn 25 tower a couple of feet below a force 12 c3 triband beam. I have 3 buried 35' radials connected to the tower legs and have no room for mor
/archives//html/Towertalk/2008-12/msg00679.html (11,813 bytes)

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