Forum: Antennas
19-Aug-2019, 2:38 PM
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Replies: 49
Views: 98,771
Both...
In a typical residential area with...
Both...
In a typical residential area with above ground poles, you see one or more high voltage lines at the top of the pole. If you look closely, the pole mounted transformer is connected to one...
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Forum: Antennas
11-Aug-2019, 3:18 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
11-Aug-2019, 3:05 AM
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Replies: 49
Views: 98,771
You are correct, the NEC makes reference to 25...
You are correct, the NEC makes reference to 25 ohms in 250.53 and requires an additional rod if that value is not achieved. Until a few years ago, the area I live in was so well known for poor ground...
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Forum: Antennas
11-Aug-2019, 2:48 AM
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Replies: 49
Views: 98,771
The traditional method of measuring ground rod...
The traditional method of measuring ground rod resistance has been the "Three Point Fall of Potential" (TPFP) though there are alternate methods as well. The cost of specialized equipment with...
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Forum: Antennas
2-Aug-2019, 1:37 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
24-Jul-2019, 5:23 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
23-Jul-2019, 3:52 PM
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Replies: 49
Views: 98,771
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Forum: Antennas
23-Jul-2019, 3:10 PM
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Replies: 49
Views: 98,771
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Forum: Antennas
23-Jul-2019, 4:47 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
2-Dec-2013, 10:38 PM
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Replies: 49
Views: 98,771
Yes, then it was realized that fault current...
Yes, then it was realized that fault current flowing in one grounding system could raise the voltage to dangerous levels relative to the separate ground system. So the current codes call for bonding...
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Forum: Antennas
25-Oct-2012, 8:12 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
30-Dec-2010, 4:54 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
29-Dec-2010, 6:40 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
30-Nov-2010, 2:46 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
26-Oct-2010, 7:49 PM
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Replies: 49
Views: 98,771
I think it's relevant enough. My personal...
I think it's relevant enough. My personal opinion is that I would be willing to spend my money on grounding conductive stuff on my property if it's called for by the code in my lo-cal.
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Forum: Antennas
25-Oct-2010, 8:32 AM
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Replies: 49
Views: 98,771
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Forum: Antennas
20-Oct-2010, 11:10 PM
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Replies: 49
Views: 98,771
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Forum: Antennas
20-Oct-2010, 7:20 PM
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Replies: 49
Views: 98,771
When I observe installation such as metal roofs...
When I observe installation such as metal roofs and siding I see important distinctions.
Unlike a metal roof system, the antenna system enters the occupied space, therefore reasonable steps should...
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Forum: Antennas
20-Oct-2010, 6:45 PM
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Replies: 49
Views: 98,771
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Forum: Antennas
19-Oct-2010, 5:55 AM
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Replies: 49
Views: 98,771
General Technical & Safety Information
Here is a link that is slightly dated but still quite useful. (A few products mentioned are no longer available.)
http://www.hdtvprimer.com/ANTENNAS/basics.html
And another (even more dated)...
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