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Total 391 documents matching your query.

101. Re: [TowerTalk] MRF Mast raising fixture, US towers (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sat, 10 Jan 2009 13:30:16 -0600
Is there a picture here that can help http://www.k9ct.us/Photos/New%20Tower/index.htm _______________________________________________ _______________________________________________ TowerTalk mailing
/archives//html/Towertalk/2009-01/msg00182.html (12,761 bytes)

102. Re: [TowerTalk] Current Choke Needed (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 11 Jan 2009 15:35:46 -0600
I got mine from the wireman and it had extra inductance for 160m but I am sure that others have it. http://www.thewireman.com/baluns.html Mark N1UK _______________________________________________ ___
/archives//html/Towertalk/2009-01/msg00204.html (8,124 bytes)

103. Re: [TowerTalk] 160m project (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 11 Jan 2009 15:44:15 -0600
I have to agree there. I have a low 160m dipole (it works great on 30m hi hi) but I struggle with dx on 160m....I can just about make the Caribbean with it from North Carolina with 600 watts. I am lo
/archives//html/Towertalk/2009-01/msg00206.html (8,898 bytes)

104. Re: [TowerTalk] 90 Degree Adapters (UG 645/U) (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Thu, 5 Feb 2009 18:20:27 -0600
I have had some Amphenol ones in line for years and have had no issues with them. Mark N1UK My experience is not all 90 degree adapters are created equal. I had several 90 adapters inline a few years
/archives//html/Towertalk/2009-02/msg00100.html (10,119 bytes)

105. Re: [TowerTalk] 43' vertical mod for true resonance on 80M (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Tue, 17 Feb 2009 19:25:57 -0600
I am planning something like this. What sort of capacitor do you need to use as the series feeding element.......a vacuum capacitor? Mark N1UK _______________________________________________ ________
/archives//html/Towertalk/2009-02/msg00451.html (11,733 bytes)

106. Re: [TowerTalk] 43' vertical mod for true resonance on 80M (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Tue, 17 Feb 2009 19:53:08 -0600
-- Original Message -- From: "Rick Karlquist" <richard@karlquist.com> To: "Mark Robinson" <markrob@mindspring.com> Cc: <richard@karlquist.com>; "Jim Brown" <jim@audiosystemsgroup.com>; "Tower Talk Li
/archives//html/Towertalk/2009-02/msg00455.html (10,797 bytes)

107. Re: [TowerTalk] 120' 160m vertical (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Wed, 18 Feb 2009 17:27:21 -0600
Thanks for all the help on the series rf caps. I am thinking of putting up a 120 foot Rohn 45 tower which is insulated at the bottom, so that it becomes a 1/4 wave vertical. I would like to feed this
/archives//html/Towertalk/2009-02/msg00488.html (10,354 bytes)

108. Re: [TowerTalk] 120' 160m vertical (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Wed, 18 Feb 2009 19:04:52 -0600
Thanks Jerry, I need to improve my modeling skills. Thanks for checking it out. Mark N1UK _______________________________________________ _______________________________________________ TowerTalk mai
/archives//html/Towertalk/2009-02/msg00491.html (13,573 bytes)

109. Re: [TowerTalk] Fwd: 6061 T-6 as mast material (score: 1)
Author: markrob@mindspring.com
Date: Fri, 27 Feb 2009 11:11:13 -0500 (EST)
he is probably one of those grunters,groaners and whistlers that you hear on the air..best ignored --Original Message-- _______________________________________________ _______________________________
/archives//html/Towertalk/2009-02/msg00633.html (10,582 bytes)

110. Re: [TowerTalk] Isotron Antennas (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 1 Mar 2009 10:07:41 -0600
Yes, if you are running 100 watts or less then take a good look at those magnetic loop antennas. They seem to work very well indeed. I worked an Italian station on 20m ssb and he was using a loop ant
/archives//html/Towertalk/2009-03/msg00007.html (10,282 bytes)

111. Re: [TowerTalk] dx blaster antenna (score: 1)
Author: markrob@mindspring.com
Date: Thu, 5 Mar 2009 13:14:59 -0500 (EST)
Going from 100 watts to 1000 watts is 10bB measured in power dB (10xlog) Isn't the S-meter measuring voltage dB's (20xlog) Is that why I normally see a 20dB (voltage) S-meter increase when a station
/archives//html/Towertalk/2009-03/msg00124.html (11,068 bytes)

112. Re: [TowerTalk] Info on Prop Pitch Rotators (score: 1)
Author: markrob@mindspring.com
Date: Fri, 6 Mar 2009 13:32:21 -0500 (EST)
I did some googling and found this http://www.k7nv.com/proppitch/ Mark N1UK --Original Message-- _______________________________________________ _______________________________________________ TowerT
/archives//html/Towertalk/2009-03/msg00156.html (8,566 bytes)

113. Re: [TowerTalk] Help with a good desk! (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 15 Mar 2009 08:55:45 -0500
People often use a sturdy door. I have glued and screwed together 2 sheets of 3/4 plywood, now that is very sturdy. You can also buy the heavy wooden panels that office tables are made from, on line.
/archives//html/Towertalk/2009-03/msg00378.html (8,087 bytes)

114. Re: [TowerTalk] Help with a good desk! (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 15 Mar 2009 09:25:59 -0500
and here is an example of a laminated office table top...1 1/4 inch thick and very sturdy. Edge glued might be even stronger than this material. Although comes finished with a laminated "formica" typ
/archives//html/Towertalk/2009-03/msg00382.html (10,887 bytes)

115. Re: [TowerTalk] Help with a good desk! (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 15 Mar 2009 10:01:35 -0500
I was given used office carpet tile and the beauty of it is that you shampoo it and wash it outside before even laying it down. I picked a nice sunny day and the tiles were dry in about 2 hours in th
/archives//html/Towertalk/2009-03/msg00386.html (9,987 bytes)

116. Re: [TowerTalk] Insulated Rohn 25 (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 15 Mar 2009 10:34:46 -0500
I have heard that G-10/FR4 rod can be machined to make good insulators. There are some places on the web that will sell you the rod and also can do the machining for you http://www.jjorly.com/g10_rod
/archives//html/Towertalk/2009-03/msg00390.html (9,189 bytes)

117. Re: [TowerTalk] Rohn 20/25G leg insulator material (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Mon, 13 Apr 2009 17:54:50 -0500
The consensus was to use solid FR4 G10 rod. These guys sell it and I believe that they can do the machining required. http://www.jjorly.com/g10_rod_rods.htm __________________________________________
/archives//html/Towertalk/2009-04/msg00450.html (9,609 bytes)

118. Re: [TowerTalk] tower raising winch (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Sun, 28 Jun 2009 14:06:02 -0500
agreed......I wouldn't put it on the roof...it will just rip the decking out if you let the pulling angle get too acute Mark N1UK _______________________________________________ _____________________
/archives//html/Towertalk/2009-06/msg00527.html (9,639 bytes)

119. Re: [TowerTalk] Rohn 25 tower install (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Wed, 12 Aug 2009 13:13:56 -0400
In the old days and I have seen it done, you could have 30 feet above the wall bracket. I have seen a small tri-bander such as a TA33JR. set up like that in Northern Illinois. How strong is it? I don
/archives//html/Towertalk/2009-08/msg00202.html (9,988 bytes)

120. Re: [TowerTalk] How much? (score: 1)
Author: "Mark Robinson" <markrob@mindspring.com>
Date: Fri, 21 Aug 2009 10:32:38 -0400
When I poured my Rohn 25 tower base in Rockford, there was a concrete guy who specialised in small quantities of concrete. One or two yards were within his norm and he would stay at the site for 30 m
/archives//html/Towertalk/2009-08/msg00411.html (11,557 bytes)


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