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21. Re: [TowerTalk] Station Ground (score: 1): Author: N6KJ <n6kj@yahoo.com>; Date: Fri, 14 Jan 2005 16:44:06 -0800 (PST); At the moment, my rig and amplifier ground lugs are not connected to anything. I have no stray RF problems or RFI that I am aware of (except a little bit of TVI when operating 40/80 which I've never; /archives//html/Towertalk/2005-01/msg00525.html (10,861 bytes)
22. Re: [TowerTalk] Station Ground (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Fri, 14 Jan 2005 16:44:26 -0800; Huh? Could you please explain exactly why? A circuit diagram might help. Jim The classic example is a mobile rig, with the -12V wire going to the battery, and the rig grounded to the car chassis at s; /archives//html/Towertalk/2005-01/msg00526.html (11,121 bytes)
23. Re: [TowerTalk] Station Ground (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 14 Jan 2005 19:54:35 -0500; going to the point via the there's a for instance, connection Headlights aren't that high in current. Starters and alternators ALWAYS ground to the engine block, as does the battery. Vehicle chassis; /archives//html/Towertalk/2005-01/msg00527.html (10,561 bytes)
24. Re: [TowerTalk] Station Ground (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 14 Jan 2005 19:57:36 -0500; radios/amps/antennas securely Almost anything. We should really NEVER, especially in a station using an amplifier with a HV supply inside, depend on the coax shield for an earth safety connection. T; /archives//html/Towertalk/2005-01/msg00528.html (8,185 bytes)
25. Re: [TowerTalk] Station Ground (score: 1): Author: bob finger <finger@goeaston.net>; Date: Fri, 14 Jan 2005 20:03:43 -0500; Tom is of corse correct. My choice of wording was poor. English is my only language, and like many of us I am not all that good at it. I will reiterate....coax interconnection should never be relied; /archives//html/Towertalk/2005-01/msg00529.html (7,815 bytes)
26. Re: [TowerTalk] Station Ground (score: 1): Author: "Frank Donovan" <donovanf@erols.com>; Date: Fri, 14 Jan 2005 17:40:50 -0500; Station ground bus bars are an obsolete grounding practice, modern grounding design practices provide far superior AC power safety and lightning protection. Grounding serves several purposes, includi; /archives//html/Towertalk/2005-01/msg00530.html (12,390 bytes)
27. Re: [TowerTalk] Station Ground (score: 1): Author: "Frank Donovan" <donovanf@erols.com>; Date: Fri, 14 Jan 2005 20:48:13 -0500; You should focus your efforts on designing and constructing a low impedance grounding window at the location where your cables enter your home. All cables entering your home should be bonded to the g; /archives//html/Towertalk/2005-01/msg00531.html (12,590 bytes)
28. Re: [TowerTalk] Station Ground (score: 1): Author: "Jim Lux" <jimlux@earthlink.net>; Date: Fri, 14 Jan 2005 18:38:23 -0800; 130 W plus isn't unusual these days. That's 10A, a substantial current, especially if it's being carried by a "sneak path". In theory... Interestingly, my old Datsun 280Z has a ground cable from star; /archives//html/Towertalk/2005-01/msg00534.html (13,121 bytes)
29. RE: [TowerTalk] Station Ground (score: 1): Author: "Keith Dutson" <kjdutson@earthlink.net>; Date: Fri, 14 Jan 2005 21:06:21 -0600; Regarding the less than useful practice of connecting all ham equipment chassis via a grounding bar, why do the equipment manufacturers usually provide a grounding lug on the back of the chassis? Kei; /archives//html/Towertalk/2005-01/msg00535.html (9,992 bytes)
30. Re: [TowerTalk] Station Ground (score: 1): Author: "K8RI on Tower Talk" <k8ri-tower@charter.net>; Date: Fri, 14 Jan 2005 22:20:49 -0500; You should focus your efforts on designing and constructing a low impedance grounding window at the location where your cables enter your home. All cables entering your home should be bonded to the g; /archives//html/Towertalk/2005-01/msg00536.html (16,352 bytes)
31. Re: [TowerTalk] Station Ground (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Fri, 14 Jan 2005 22:25:33 -0500; Frank Donovan wrote: The modern design practice is to bond all RF cables, rotator cables and control cables to a common grounding "window" at the entry point into the home. All other cables (AC power; /archives//html/Towertalk/2005-01/msg00537.html (10,776 bytes)
32. Re: [TowerTalk] Station Ground (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Fri, 14 Jan 2005 22:39:40 -0500; To be completely properly done, the AC power should also come in through your bulkhead "ground window" with power line protectors at the ground window. It doesn't take much of an impedance difference; /archives//html/Towertalk/2005-01/msg00539.html (12,211 bytes)
33. Re: [TowerTalk] Station Ground (score: 1): Author: "Floyd Sense" <fsense@copper.net>; Date: Fri, 14 Jan 2005 22:49:12 -0500; Many folks make the assumption that the station is going to be somewhere near where the common ground entry point is for the cables, power, telephone, etc. In my case, the station is, by necessity, 7; /archives//html/Towertalk/2005-01/msg00540.html (14,621 bytes)
34. Re: [TowerTalk] Station Ground (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Fri, 14 Jan 2005 23:16:04 -0500; It doesn't matter if conductors are round or flat. It is the surface area that counts for low inductance. Of course a flat conductor will have less copper for a given amount of surface area compared; /archives//html/Towertalk/2005-01/msg00542.html (10,421 bytes)
35. RE: [TowerTalk] Station Ground (score: 1): Author: "Ward Silver" <hwardsil@centurytel.net>; Date: Fri, 14 Jan 2005 20:19:09 -0800; One thing has been overlooked in the discussion of grounding with respect to lightning and ac safety. I don't disagree with anything W3LPL had to say, but I would like to point out that it is importa; /archives//html/Towertalk/2005-01/msg00543.html (8,820 bytes)
36. Re: [TowerTalk] Station Ground (score: 1): Author: "K8RI on Tower Talk" <k8ri-tower@charter.net>; Date: Fri, 14 Jan 2005 23:24:25 -0500; The station equipment is all on the same main, but the arc was between two coax cables, both tied to the main grounding bulkhead. I think I'll follow Polyphaser's recommendation on the grounding poin; /archives//html/Towertalk/2005-01/msg00544.html (13,404 bytes)
37. Re: [TowerTalk] Station Ground (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Fri, 14 Jan 2005 23:57:19 -0500; What I described is Polyphaser's recommendations. :>) 73 Gary K4FMX K8RI on Tower Talk wrote: The station equipment is all on the same main, but the arc was between two coax cables, both tied to the; /archives//html/Towertalk/2005-01/msg00545.html (14,235 bytes)
38. RE: [TowerTalk] Station Ground (score: 1): Author: "Keith Dutson" <kjdutson@earthlink.net>; Date: Fri, 14 Jan 2005 23:22:35 -0600; Would you care to define "ground loops between pieces of equipment"? Here are my thoughts: An equipment ground loop is a condition where potential (voltage) can be measured between the chassis of two; /archives//html/Towertalk/2005-01/msg00547.html (13,557 bytes)
39. Re: [TowerTalk] Station Ground (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Fri, 14 Jan 2005 21:33:01 -0800; Gary, That might be true if each piece of equipment in the shack was totally isolated from every other piece of equipment. In reality there are all kinds of incidental chassis connection between gea; /archives//html/Towertalk/2005-01/msg00548.html (10,846 bytes)
40. RE: [TowerTalk] Station Ground (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Sat, 15 Jan 2005 03:16:11 -0500; Just a sidelight on this. As a legacy of the past, I have a bus-bar system connected to my single point ground bulkhead, but alas, the distance to actual ground from my second floor window is several; /archives//html/Towertalk/2005-01/msg00552.html (11,269 bytes)

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