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81. [TowerTalk] More from the M2 antennas quality control file (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Mon, 13 Apr 2015 17:12:44 -0500
See here:https://www.flickr.com/photos/n3ykf/16913167247/Looking at the photos, the elements are lying on paper that shows that the correct measurement as well as what should be the actualmeasurement
/archives//html/Towertalk/2015-04/msg00303.html (8,001 bytes)

82. Re: [TowerTalk] Rotating tower guying question (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Mon, 4 May 2015 08:57:34 -0400
Just as a reference: I had a 141 rotating R45 tower in AZ ... the guys were attached at about 120 (top) and out ~105. I used 1/4 throughout. I used insulators throughout as well using the values prov
/archives//html/Towertalk/2015-05/msg00018.html (11,778 bytes)

83. Re: [TowerTalk] Rotating tower guying question (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Mon, 4 May 2015 12:57:48 -0400
R65 is VERY heavy duty stuff ... coupled with 11200# philly Id suspect that it would indeed feel very strong! My point was only IF K7NVs analysis is correct and Im surely not in a position to dispute
/archives//html/Towertalk/2015-05/msg00024.html (10,915 bytes)

84. [TowerTalk] how do you model a hairpin match? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Fri, 22 May 2015 13:23:44 -0400
Ok.... I read the Antenna Handbook... it says to use a chart they have reading it at 52 ohms line impedance (coax)... and 22 ohms RL I need 42 ohms of reactance. Then shorten the driven element to pr
/archives//html/Towertalk/2015-05/msg00194.html (7,877 bytes)

85. [TowerTalk] a question about using EZNEC5 (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Fri, 22 May 2015 16:27:22 -0400
Im sure this is in the manual somewhere forgive me for not digging for it... Ive modeled a 6 element 15... and I was wondering how one best models the boom bracket. I know for YW it uses a lump for e
/archives//html/Towertalk/2015-05/msg00198.html (8,091 bytes)

86. Re: [TowerTalk] how do you model a hairpin match? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Fri, 22 May 2015 17:43:16 -0400
Thanks John Id agree with you it isnt going to give the correct, with hairpin, driven element length unless I model it. If I used a transformer I could match it... but would rather figure out how to
/archives//html/Towertalk/2015-05/msg00199.html (8,584 bytes)

87. Re: [TowerTalk] how do you model a hairpin match? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Fri, 22 May 2015 19:09:48 -0400
Hello Joe, I figured it out. Or found out where to get the answer. Jeff had said that AutoEZ would do this so I read over their documentation and I see it is done using a transmission line and not an
/archives//html/Towertalk/2015-05/msg00200.html (9,362 bytes)

88. Re: [TowerTalk] how do you model a hairpin match? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Fri, 22 May 2015 19:13:21 -0400
Gerald, SUPER! Thanks. I was actually just there just now. I had figured out how to do it using a transmission line ... so I have a length of I believe 12 and a Zo of 300 ohms with a VF of 0.9 (value
/archives//html/Towertalk/2015-05/msg00201.html (8,279 bytes)

89. [TowerTalk] Valmont and guy accessories (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Tue, 9 Jun 2015 13:47:06 -0400
Valmont, Anyone familiar with this company and their wares? They offer guy cable, at least 5/16 7 strand rated at 11,200# (same as Rohn 5/16 .. on paper) as well as 1/2 x 12 11,000# turnbuckles at re
/archives//html/Towertalk/2015-06/msg00124.html (7,944 bytes)

90. [TowerTalk] MFJ226 / SARK110 (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Tue, 7 Jul 2015 11:08:40 -0400
Has anyone purchased/used one of these devices? Im interested in their ability to accurately do OSL and thus test an antenna at the end of a feedline. Also their construction (handle with kid gloves
/archives//html/Towertalk/2015-07/msg00105.html (7,242 bytes)

91. [TowerTalk] DB18E and a TIC ring rotor on R55... (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Thu, 27 Aug 2015 17:28:39 -0400
I doubt Ill hit the target directly but possibly someone can help... I was thinking of using a DB18E for 40/30/warc along with stacked monos on 10/15/20 ... this is on a rotating tower so the antenna
/archives//html/Towertalk/2015-08/msg00487.html (7,399 bytes)

92. [TowerTalk] Expected VSWR of antenna near the ground (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Sat, 26 Sep 2015 09:00:52 -0400
3 is really close.... get it up even 2 more and I suspect youll notice a difference. Ideally 6+. Can you point the front of the antenna straight up and test it (up against the side of a tower maybe)?
/archives//html/Towertalk/2015-09/msg00282.html (7,001 bytes)

93. Re: [TowerTalk] Interaction with the Optibeam 16-3 (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Thu, 1 Oct 2015 09:24:04 -0400
Steve, Interesting.... my plans are for a 40M4LLDD mounted ~31 above the top antenna of a 2x6el stack on 15... when I model something similar (I happen to, at the time, be looking at a moxon on 40) I
/archives//html/Towertalk/2015-10/msg00000.html (8,380 bytes)

94. [TowerTalk] what is 'circular tie' as is used in a towers concrete base? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Tue, 20 Oct 2015 11:29:37 -0400
Rohn says to use 8 #7 rebar (SERIOUSLY! 7/8!!) ... and then it shows #4 circular ties 2 1/2 OC with 2 cover with 24 laps huh? Ive always just dug a hole usually around 3 x 3 x 3 ... put the tower sec
/archives//html/Towertalk/2015-10/msg00134.html (8,062 bytes)

95. Re: [TowerTalk] what is 'circular tie' as is used in a towers concrete bar (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Tue, 20 Oct 2015 14:29:45 -0400
how big a diameter is that circle? A couple feet? I've seen truckloads of coils of rebar going by me on the freeway, so I suspect it's something you can just order and cut to size. I suppose a suitab
/archives//html/Towertalk/2015-10/msg00143.html (9,090 bytes)

96. [TowerTalk] what is 'circular tie' as is used in a towers concrete base? (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Wed, 21 Oct 2015 15:03:43 -0400
thanks for all the comments.... it does seem like the foundation drawing they have appears to be more for pier pin than when a section is in the mix. Id think a section would provide tremendous ... c
/archives//html/Towertalk/2015-10/msg00157.html (9,625 bytes)

97. [TowerTalk] Phillystrand and EHS mix (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Wed, 21 Oct 2015 15:14:27 -0400
So.... has anyone else done a mix where the Philly (PS) was less than 50% of the total length? I did a bunch of modeling and found using simply a 50 length of PS at the tower for the bottom 2 sets of
/archives//html/Towertalk/2015-10/msg00158.html (7,926 bytes)

98. Re: [TowerTalk] 40m optibeam de-coupling stubs (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Mon, 16 Nov 2015 21:06:50 -0500
Dave.... please send me that file if you dont mind (and if it is ok with Optibeam). I asked Richard, N5ZC to test his 40M4LLDD recently .... I asked him to check to see what the SWR was on 15 (and 20
/archives//html/Towertalk/2015-11/msg00162.html (9,329 bytes)

99. Re: [TowerTalk] 40m optibeam de-coupling stubs (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Wed, 18 Nov 2015 09:11:16 -0500
hispost. The 40M4LLDD is a different animal, its 15m resonance was previously posted |by N2IC.http://lists.contesting.com/archives//html/Towertalk/2015-09/msg00315.html John KK9A so.... not knowing
/archives//html/Towertalk/2015-11/msg00165.html (9,679 bytes)

100. [TowerTalk] 160 M antennas: Shunt feed, reverse feed or just a vertical... (score: 1)
Author: "StellarCAT" <rxdesign@ssvecnet.com>
Date: Wed, 30 Dec 2015 19:40:35 -0500
Ok.... Ive been reading through pasts posts and Ive digested both UNs book as well as the ARRL AB regarding each of these: -Shunt feed tower -reverse feed tower -plain jane vertical ... I had an inve
/archives//html/Towertalk/2015-12/msg00410.html (9,563 bytes)


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