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Search: Posts Made By: GroundUrMast
Forum: Antennas 19-Aug-2019, 2:38 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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...
Forum: Antennas 11-Aug-2019, 3:18 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
Yes. For example I live in an area that has high...

Yes. For example I live in an area that has high voltage transmission lines within a quarter mile. If there was a line down there will be high voltage at the point of contact to the earth and the...
Forum: Antennas 11-Aug-2019, 3:05 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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...
Forum: Antennas 11-Aug-2019, 2:48 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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...
Forum: Antennas 2-Aug-2019, 1:37 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
Here is the 20017 edition of the NEC (NFPA-70)....

Here is the 20017 edition of the NEC (NFPA-70). Chapter 8, Article 810 is the primary portion that deals with antenna systems used for TV and Satellite reception.
...
Forum: Antennas 24-Jul-2019, 5:23 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
I suppose I've repeated myself several times in...

I suppose I've repeated myself several times in this thread...

After scanning through the comments you linked to, I came away with the impression that many people have the misconception that...
Forum: Antennas 23-Jul-2019, 3:52 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
There are often competing factors to deal with....

There are often competing factors to deal with. Whether it's a family member that wants the antenna to be hidden from view or keeping costs under control...

While keeping coax length to a minimum...
Forum: Antennas 23-Jul-2019, 3:10 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
OTAFAN, I'm glad you asked about this and don't...

OTAFAN, I'm glad you asked about this and don't think you were wrong to pose the question in the help with reception area of the forum. Just trying to maintain some organization.
Forum: Antennas 23-Jul-2019, 4:47 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
OTAFAN, Thanks for inviting more discussion about...

OTAFAN, Thanks for inviting more discussion about this...

Electrical potential is simply the voltage difference between two objects or points in an electrical circuit.

The purpose of grounding...
Forum: Antennas 2-Dec-2013, 10:38 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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...
Forum: Antennas 25-Oct-2012, 8:12 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
If the question is, 'Should I ground my antenna?'

My stock answer is, Grounding/bonding the mast and coax shield are prudent and relatively inexpensive steps that limit the buildup of static-electricity which can damage the tuner. When done...
Forum: Antennas 30-Dec-2010, 4:54 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
Ideally, locate the coax ground block close to...

Ideally, locate the coax ground block close to the ground rod that is closest to the electrical service.

Ideally, the mast ground would connect to the same ground rod, close to the electrical...
Forum: Antennas 29-Dec-2010, 6:40 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
vms, I think of the mast ground as step one, the...

vms, I think of the mast ground as step one, the coax ground as step two.

Based on your description, it sounds like you are on the right track except, I would not run the mast ground to the coax...
Forum: Antennas 30-Nov-2010, 2:46 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
Anyone who reasons that a grounded antenna and...

Anyone who reasons that a grounded antenna and mast may be attractive to atmospheric static is quite right.

However, reasoning that the antenna system will be safer if no effort is made to...
Forum: Antennas 26-Oct-2010, 7:49 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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.
Forum: Antennas 25-Oct-2010, 8:32 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
Good points & questions. However, I think that...

Good points & questions. However, I think that grounding of metal roofs and siding are topics for a different forum.

Perhaps http://forums.mikeholt.com/
Forum: Antennas 20-Oct-2010, 11:10 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
(Please note, I agree with your statement "Ground...

(Please note, I agree with your statement "Ground fault does not mean there is a faulty ground in electric circuits." However I am not referring to ground fault interrupters or faulty grounds. I have...
Forum: Antennas 20-Oct-2010, 7:20 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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...
Forum: Antennas 20-Oct-2010, 6:45 PM
Replies: 49
Views: 69,872
Posted By GroundUrMast
I agree. Much of what I have learned has been by...

I agree. Much of what I have learned has been by observing and then pondering over what I have seen. Sometimes I learn how to do 'it' right, sometimes I learn how not to do 'it'. So I try not to...
Forum: Antennas 19-Oct-2010, 5:55 AM
Replies: 49
Views: 69,872
Posted By GroundUrMast
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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