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Total 28 documents matching your query.

21. Re: [TowerTalk] Rotor loop coax (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 21 Aug 2018 14:34:22 -0700; Hi Steve, W3LPL has alerted us to the fact that passive intermod is often generated within rotor housings, the solution for which is to bond around the rotor. What do you recommend for making the con; /archives//html/Towertalk/2018-08/msg00166.html (9,013 bytes)
22. Re: [TowerTalk] Rotor loop coax (score: 1): Author: k7lxc--- via TowerTalk <towertalk@contesting.com>; Date: Thu, 23 Aug 2018 11:37:06 -0400; generated within rotor housings, the solution for which is to bond around the rotor. What do you recommend for making the connection to the mast above the rotor? I dunno. What does the new N; /archives//html/Towertalk/2018-08/msg00182.html (8,936 bytes)
23. Re: [TowerTalk] Rotor loop coax (score: 1): Author: Grant Saviers <grants2@pacbell.net>; Date: Thu, 23 Aug 2018 10:36:40 -0700; The ball bearings in the rotator should have an oil film between them and the races. That oil film will break down with a few to several dozen volts of potential and the discharge will make noise, a; /archives//html/Towertalk/2018-08/msg00184.html (10,999 bytes)
24. Re: [TowerTalk] Rotor loop coax (score: 1): Author: "john@kk9a.com" <john@kk9a.com>; Date: Thu, 23 Aug 2018 14:09:40 -0400; I also do not do this. I assumed that the mast is grounded though the thrust bearing and the rotator bearing. Of course multi-multi stations like W3LPL can have rectification issues that do most of u; /archives//html/Towertalk/2018-08/msg00185.html (9,232 bytes)
25. Re: [TowerTalk] Rotor loop coax (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 23 Aug 2018 11:31:25 -0700; It's also common to run into this problem when running SO2R CW on the 80/40 and 40/20 bands, where the second harmonic of the lower band is often close to where we want to operate on the higher band.; /archives//html/Towertalk/2018-08/msg00187.html (8,969 bytes)
26. Re: [TowerTalk] Rotor loop coax (score: 1): Author: "Mel Whitten" <mel@melwhitten.com>; Date: Thu, 23 Aug 2018 14:21:31 -0400; I used a very large and very flexible cable from the commercial welding industry to "bond" across my prop pitch rotor. I never thought about passive intermodulation. I did this 15+ years ago to help; /archives//html/Towertalk/2018-08/msg00188.html (10,077 bytes)
27. Re: [TowerTalk] Rotor loop coax (score: 1): Author: "N2TK, Tony" <tony.kaz@verizon.net>; Date: Thu, 23 Aug 2018 14:57:12 -0400; Had some noise generated on 160M during a breeze. I am shunt feeding the tower. Used a 1.5" tinned braided strap attached to the mast right below the top plate of the tower and clamped to a tower leg; /archives//html/Towertalk/2018-08/msg00189.html (10,024 bytes)
28. [TowerTalk] Rotor loop coax (score: 1): Author: k7lxc--- via TowerTalk <towertalk@contesting.com>; Date: Sun, 26 Aug 2018 11:13:55 -0400; Braided strap is the worst thing you can use for grounding. First, it deteriorates over time and secondly the individual strands will corrode which means that there won't be any strand-to-str; /archives//html/Towertalk/2018-08/msg00211.html (9,157 bytes)

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