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Total 1919 documents matching your query.

101. Re: [TowerTalk] [Bulk] Re: SteppIR (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Sun, 01 Mar 2015 09:43:00 -0500
antennas. I are a About 7 years ago, a good friend lent us his early-model 3-element 20-10m SteppIR for the winter season, to see how it would fare in this extremely windy QTH. It worked fine, with
/archives//html/Towertalk/2015-03/msg00009.html (11,567 bytes)

102. Re: [TowerTalk] [Bulk] Re: SteppIR (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Sun, 01 Mar 2015 09:41:46 -0500
antennas. I are a About 7 years ago, a good friend lent us his early-model 3-element 20-10m SteppIR for the winter season, to see how it would fare in this extremely windy QTH. It worked fine, with
/archives//html/Towertalk/2015-03/msg00006.html (11,736 bytes)

103. Re: [TowerTalk] T Matches (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Sat, 28 Feb 2015 03:55:46 -0500
I'd agree with Chuck and Jim: a 20-degree squint from a correctly constructed T-match just isn't possible. To produce a squint of that magnitude, something at the feedpoint would need to be grossly w
/archives//html/Towertalk/2015-02/msg00519.html (9,707 bytes)

104. Re: [TowerTalk] Cutting a FT-240 type 33...in half ?? (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Tue, 10 Feb 2015 02:42:31 -0500
Hold on, Jim - Please say that <isn't> a metal NEMA box with flange connectors at both ends? 73 from Ian GM3SEK OD, silver 393 coax been that is screws. braid sanded, have an quickly. since they ____
/archives//html/Towertalk/2015-02/msg00175.html (10,068 bytes)

105. Re: [TowerTalk] [Bulk] FW: Coax lengths for phasing a stack (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Mon, 09 Feb 2015 03:46:16 -0500
Or: "Take care of the millibels and the decibels will take care of themselves." 73 from Ian GM3SEK _______________________________________________ _______________________________________________ Towe
/archives//html/Towertalk/2015-02/msg00151.html (8,499 bytes)

106. Re: [TowerTalk] [Bulk] Antenna to Shack Ground Connection (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Wed, 04 Feb 2015 02:48:56 -0500
about A "CE" marking is a statement that the product complies with *all* applicable European Union requirements, and the requirements for electrical products naturally do include safety. However, th
/archives//html/Towertalk/2015-02/msg00114.html (10,819 bytes)

107. Re: [TowerTalk] Fw: w7ekb & ground rods (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Tue, 20 Jan 2015 04:12:06 -0500
a I that a Another option is to buy a 1/2-in socket adapter - see Figure 3 of this article: http://www.ifwtech.co.uk/g3sek/in-prac/0710.pdf Snap on a socket to fit whichever size of rod you're drivi
/archives//html/Towertalk/2015-01/msg00341.html (10,434 bytes)

108. Re: [TowerTalk] Choking on chokes (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Tue, 09 Dec 2014 02:52:50 -0500
I never said that a Yagi doesn't *need* a balun! Using no balun at all would just be a fool's way of turning a "soft" common-mode problem into a tough one. 73 from Ian GM3SEK _______________________
/archives//html/Towertalk/2014-12/msg00072.html (8,854 bytes)

109. Re: [TowerTalk] Choking on chokes (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Fri, 05 Dec 2014 03:44:38 -0500
You certainly shouldn't need to do that. Let's think about this, because RF current on a rotator control cable can't just appear out of nowhere. The defining feature of current is that it must have
/archives//html/Towertalk/2014-12/msg00041.html (9,484 bytes)

110. Re: [TowerTalk] Choking on chokes (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Thu, 04 Dec 2014 06:59:03 -0500
Truly balanced antennas are beyond "rare". In the real world, they don't exist at all. There is a strong ham myth that center-fed dipole antennas in some way "want" to be balanced; but that is almost
/archives//html/Towertalk/2014-12/msg00020.html (11,309 bytes)

111. Re: [TowerTalk] Baluns...just one more time. (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Mon, 01 Dec 2014 04:47:21 -0500
be a rods, It isn't clear what you're aiming to achieve here, Jim. If you connect the coax shield to the boom at a point that has a low impedance down to the ground at the base of the tower, that wil
/archives//html/Towertalk/2014-12/msg00001.html (10,121 bytes)

112. Re: [TowerTalk] Cordless solder irons (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Thu, 20 Nov 2014 04:40:16 -0500
THIS is a much more serious butane-fueled solder gun, with a chunky copper tip that stores the heat well. There is a built-in igniter but the heating element is catalytic so there is no naked flame a
/archives//html/Towertalk/2014-11/msg00366.html (14,631 bytes)

113. Re: [TowerTalk] Some advice about crimp ;type coax connectors (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Wed, 19 Nov 2014 04:34:09 -0500
air deep) who Ah yes - the amazing, alarming 'Scope' soldering iron. Designed to operate directly from a car battery, the heating element was a small slug of carbon which could be pushed forward insi
/archives//html/Towertalk/2014-11/msg00331.html (10,154 bytes)

114. Re: [TowerTalk] RTV (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Fri, 07 Nov 2014 03:57:18 -0500
Yet another good alternative is hot melt glue. HMG forms a flexible, weatherproof seal onto metals, plastics and many other kinds of materials. In many years of outdoor use, in a notoriously wet clim
/archives//html/Towertalk/2014-11/msg00101.html (9,722 bytes)

115. Re: [TowerTalk] Insulated elements, Yes - No? (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Thu, 7 Aug 2014 07:54:59 +0100
the My first reaction was "Go Google for it!" because there is lots of information about element length corrections on the web. However, there is surprisingly little on the web about corrections for
/archives//html/Towertalk/2014-08/msg00164.html (9,470 bytes)

116. Re: [TowerTalk] Fwd: Insulated elements, Yes - No? (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Tue, 5 Aug 2014 22:54:31 +0100
Insulating the elements will certainly reduce the correction for the boom and mounting plate, but does not eliminate corrections completely. There is still a proximity effect, which will obviously be
/archives//html/Towertalk/2014-08/msg00136.html (11,517 bytes)

117. Re: [TowerTalk] Site Elevation and TOA (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Wed, 18 Jun 2014 10:52:07 +0100
and All users should try creating a .PRO file from scratch at least once, because creating your own file gives far more insight into how HFTA actually uses its radial data. If you use only the SRTM
/archives//html/Towertalk/2014-06/msg00156.html (9,528 bytes)

118. Re: [TowerTalk] Ground Rod Myths? (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Wed, 23 Apr 2014 08:36:32 +0100
can It depends totally on where you live. The only valid generalization about driving ground rods is: "Local Mileage WILL Vary". 73 from Ian GM3SEK _______________________________________________ __
/archives//html/Towertalk/2014-04/msg00504.html (8,055 bytes)

119. Re: [TowerTalk] Antenna matching values (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Wed, 23 Apr 2014 08:11:51 +0100
guys. It depends on which conductor was torn. A torn center conductor is usually quite dramatic: everything stops. On the other hand, a torn shield can often cause only a moderate mismatch because t
/archives//html/Towertalk/2014-04/msg00503.html (8,557 bytes)

120. Re: [TowerTalk] Back of desk grounding buss (score: 104)
Author: "Ian White" <gm3sek@ifwtech.co.uk>
Date: Sun, 23 Mar 2014 18:34:59 -0500
The aim of "bonding" is to equalize the chassis potentials of several separate items of equipment, so that unwanted voltages induced along the lengths of the interconnecting cables are effectively sh
/archives//html/Towertalk/2014-03/msg00204.html (13,293 bytes)


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