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Total 108 documents matching your query.

81. Re: [TowerTalk] Phishing Attempt on list members (score: 1)
Author: <marsh@ka5m.net>
Date: Tue, 7 Mar 2017 16:02:23 -0600
Doesn't "Chase Online" raise a red flag? Marsh, KA5M Bad thing is these bozo's are getting a little better with their English and use of terms such as 73 etc making it a bit harder to spot.,.. 73, St
/archives//html/Towertalk/2017-03/msg00071.html (16,333 bytes)

82. Re: [TowerTalk] current balun question (score: 1)
Author: <marsh@ka5m.net>
Date: Mon, 20 Mar 2017 09:06:33 -0500
Maximo, There is something called Kirchhoff's current law that says all of the current delivered to the load must return to the source. A common mode choke, sometimes referred to in error as a 1:1 ba
/archives//html/Towertalk/2017-03/msg00275.html (13,547 bytes)

83. Re: [TowerTalk] Saddle clamps (muffler clamps) (score: 1)
Author: <marsh@ka5m.net>
Date: Fri, 30 Jun 2017 09:07:56 -0500
JK Antennas makes high quality precision machined boom to element plate clamps. You might check with them. 73, Marsh, KA5M --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.co
/archives//html/Towertalk/2017-06/msg00428.html (10,247 bytes)

84. Re: [TowerTalk] Adjustments to Tower Base Pier J-Bolts (score: 1)
Author: <marsh@ka5m.net>
Date: Sat, 22 Jul 2017 12:21:02 -0500
There's no way I'd apply heat to the bolts over concern of weakening the bolts. I'd try to cut the template off with a reciprocating saw or a grinder. Why do you need 12" sticking out above the level
/archives//html/Towertalk/2017-07/msg00226.html (13,536 bytes)

85. Re: [TowerTalk] Common Mode Choke Question (score: 1)
Author: <marsh@ka5m.net>
Date: Wed, 27 Sep 2017 14:11:17 -0500
I'd recommend referring to RFI-Ham.pdf by K9YC. http://www.audiosystemsgroup.com/RFI-Ham.pdf Good info and a great reference resource. For 160M and / or 80M I'd go with the recommended 7 turns throug
/archives//html/Towertalk/2017-09/msg00297.html (8,032 bytes)

86. Re: [TowerTalk] Fan Dipole (score: 1)
Author: <marsh@ka5m.net>
Date: Mon, 2 Oct 2017 06:33:14 -0500
One measure of a transmit antenna's performance is how loud the signal from it is at some distance away. In addition to the RBN, a WSPRlite Classic Antenna Performance Analysis System from SOTABEAMS
/archives//html/Towertalk/2017-10/msg00019.html (9,582 bytes)

87. Re: [TowerTalk] Concrete base - tower (score: 1)
Author: <marsh@ka5m.net>
Date: Thu, 12 Oct 2017 12:42:19 -0500
Unless you are a Civil or Mechanical Engineer and can do all the calculations to confirm that your redesign is in fact "equivalent", I recommend you follow the manufacturer's design and specs exactly
/archives//html/Towertalk/2017-10/msg00122.html (7,918 bytes)

88. Re: [TowerTalk] 402CD Modeling Help. (score: 1)
Author: <marsh@ka5m.net>
Date: Thu, 30 Nov 2017 14:21:19 -0600
The XM240 reflector is insulated from the boom. I don't know about the 402CD. 73, Marsh, KA5M --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Zivney, Terry
/archives//html/Towertalk/2017-11/msg00278.html (8,112 bytes)

89. Re: [TowerTalk] Balun for older Cushcraft 402CD (score: 1)
Author: <marsh@ka5m.net>
Date: Fri, 19 Jan 2018 07:20:42 -0600
I'd highly recommend the 1116dt from Balun Designs. (Optimized for 160M, 80M, and 40M.) http://www.balundesigns.com/model-1116d-1-31-mhz-5kw-optimized-for-low-frequ encies/ It is important to keep th
/archives//html/Towertalk/2018-01/msg00157.html (8,963 bytes)

90. Re: [TowerTalk] Probably dumb question (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Tue, 14 Aug 2018 12:14:32 -0500
Let's assume by "watts out" you mean watts forward. SWR = 1 + SqRt(Pr/Pf) / 1 - SqRt(Pr/Pf) For 100 watts forward and 10 watts reflected: SWR = 1 +SqRt(10/100) / 1 - SqRt(10/100) = 1 + 0.31623 / 1 -
/archives//html/Towertalk/2018-08/msg00084.html (8,067 bytes)

91. Re: [TowerTalk] Arc fault Acom 2K (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Fri, 9 Nov 2018 18:34:20 -0600
I suggest you contact Val LZ1VB at val@acom-bg.com In my experience, the customer support from ACOM is outstanding! Marsh, KA5M Have a strange problem in the shack. Run the same antennas and had no i
/archives//html/Towertalk/2018-11/msg00080.html (8,321 bytes)

92. Re: [TowerTalk] COIL 3.0 (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Tue, 20 Nov 2018 13:35:10 -0600
Thank you Brian. I miss DOS. Life was much simpler then.... 73, Marsh, KA5M New! Improved! Yes, an update of my 1990s coil inductance and Q calculator is here. This version uses methods with better a
/archives//html/Towertalk/2018-11/msg00222.html (7,959 bytes)

93. [TowerTalk] FW: Your Enrolled Payment has been initiated (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Wed, 23 Jan 2019 10:44:26 -0600
Got the below e-mail this morning. It came with an attached .doc that I did not click on. Marsh, KA5M Dear, Attached is your invoice from TowerTalk. ACCOUNT NUMBER 1256442 INVOICE NUMBER DKG435138-88
/archives//html/Towertalk/2019-01/msg00214.html (7,103 bytes)

94. Re: [TowerTalk] identifying Mosley antenna (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Tue, 5 Feb 2019 13:13:47 -0600
I would have guessed a TA-33Jr except for the 14-foot boom. Maybe a TA-33M that has a 14-foot boom? All the specs I can find say the TA-33Jr has a 12-foot boom. 73, Marsh, KA5M Sounds like a TA33jr.
/archives//html/Towertalk/2019-02/msg00009.html (9,128 bytes)

95. Re: [TowerTalk] Slightly off-topic (score: 1)
Author: "Marsh KA5M" <marsh@ka5m.net>
Date: Fri, 8 Feb 2019 11:51:14 -0600
Do you have the chassis of the FT-1000MP, Bencher "XZ-2" audio filter, rotator control box, and Astron PS all bonded together with a heavy braid conductor this is connected to your station ground? Ma
/archives//html/Towertalk/2019-02/msg00024.html (8,684 bytes)

96. Re: [TowerTalk] Message formatting - Easy Fix (score: 1)
Author: <marsh@ka5m.net>
Date: Fri, 5 Apr 2019 14:21:26 -0500
Line breaks have been removed. Just "Restore line breaks" and all will be well. Marsh, KA5M I have seen an increasing number of posts such as the one below, where the text is all compressed into one
/archives//html/Towertalk/2019-04/msg00043.html (10,600 bytes)

97. Re: [TowerTalk] Message formatting - Easy Fix (score: 1)
Author: <marsh@ka5m.net>
Date: Fri, 5 Apr 2019 16:59:56 -0500
The server (reflector app) removes the "extra" line breaks, not the sender. Restoring the line breaks make the messages much easier to read, at least for me. Marsh, KA5M So Marsh, how does this "easy
/archives//html/Towertalk/2019-04/msg00045.html (8,342 bytes)

98. Re: [TowerTalk] W6NL Moxon for 40 meters (score: 1)
Author: <marsh@ka5m.net>
Date: Fri, 9 Aug 2019 10:02:49 -0500
The approximate turning radius for the W6NL Moxon conversion for the Cushcraft XM 240 is 26 ft 3-3/4 inches. 73, Marsh, KA5M Does anyone have the turning radius for the W6NL moxon conversion for the
/archives//html/Towertalk/2019-08/msg00038.html (8,293 bytes)

99. Re: [TowerTalk] Need help estimating cable length of DXE 400 MAX (score: 1)
Author: <marsh@ka5m.net>
Date: Sun, 12 Jan 2020 10:48:46 -0600
See pages 15 and 16 of the RigExpert AA-55 Zoom User's Manual for "Cable length measurement". https://new.rigexpert.com/files/manuals/aa55zoom-bt/UserManual-AA-55ZOOM_en. pdf 73, Marsh, KA5M I am inv
/archives//html/Towertalk/2020-01/msg00158.html (8,474 bytes)

100. Re: [TowerTalk] Need info on balun for Hygain TH-7DX antenna (score: 1)
Author: <marsh@ka5m.net>
Date: Thu, 2 Apr 2020 15:00:00 -0500
It never ceases to amaze me how much basic technical information is NOT in product manuals. 73, Marsh, KA5M It appears that the balun on my TH-7 has died. Can someone please tell me if this is a 4:1
/archives//html/Towertalk/2020-04/msg00006.html (8,644 bytes)


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