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Total 26 documents matching your query.

21. [TowerTalk] SWR jumps on a 6m beam (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Sat, 29 Dec 2012 19:52:14 +1300
I have an UltraBeam UB-50 (SteppIR-like dynamic elements covering 6 to 40) on my tower. When set for 6m, the antenna analyzer shows an SWR of less than 2:1 across the band. I set my TX for 50W output
/archives//html/Towertalk/2012-12/msg00188.html (7,782 bytes)

22. [TowerTalk] Low RFI diesel generator? (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Wed, 27 Mar 2013 14:45:07 +1300
I'm in the market for a new genset - probably a low-RPM diesel generator, with 240VAC, clean sine wave output, audibly quiet / "silent" canopy, in the 10 to 20 KW range. It will be located fairly clo
/archives//html/Towertalk/2013-03/msg00368.html (7,163 bytes)

23. Re: [TowerTalk] FW: vertical antenna advice needed (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Sat, 15 Jun 2013 16:26:39 +1200
Felipe, I would use three multiband quarter-wave verticals, spaced, aligned and phased to provide some directionality, gain and F/B on your bands of interest. The "driver" could be either a commercia
/archives//html/Towertalk/2013-06/msg00206.html (13,634 bytes)

24. Re: [TowerTalk] How High is enough (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Thu, 1 Aug 2013 12:32:29 +1200
If you can manage it, the ideal scenario is two (or more) beams on the same tower, with switching and phasing that allows you to run them in phase, out of phase, or separately. That gives you the fle
/archives//html/Towertalk/2013-07/msg00581.html (9,540 bytes)

25. [TowerTalk] SWR variations with power (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Tue, 5 Nov 2013 10:03:08 +1300
I have a power/SWR meter in my amplifier (an Expert 2K-FA), as well as an off-board Power Master. Both meters show that the SWR level fluctuates somewhat as the power level changes - getting higher w
/archives//html/Towertalk/2013-11/msg00061.html (7,667 bytes)

26. Re: [TowerTalk] SWR variations with power (score: 1)
Author: "Rick Kiessig" <kiessig@gmail.com>
Date: Tue, 5 Nov 2013 12:29:52 +1300
The feedline goes through fourteen 2.4-inch #31 toroids as it leaves the amp (three turns through seven toroids, then the same thing again). Might seem like a lot, but that's what it took to get RFI
/archives//html/Towertalk/2013-11/msg00064.html (11,268 bytes)

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