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sweaty 07-19-2008 04:48 AM

TV Antenna Reception
 
My house, built in 1976, has a big, old aerial antenna mounted to the chimney. There is a two-wire cable going from it into the gable vent, down somewhere through the walls, and to a wall outlet in the basement. This cable had been disconnected over the years so I stripped some wire, reattached it to the rusty terminals, and wrapped them with tape. The ground wire broke off a few feet from the antenna. I attached an adaptor for coax at the wall outlet and got a signal somewhat better than my rabbit ears. I live in a close-in suburb but am surrounded by trees.

Can you tell me what to do about the ground wire? Do I need a lightning arrestor? Is there a way I can use a pre-amp with this 2-wire cable?

I refuse to pay for cable TV or satellite.

JohnJ0906 07-19-2008 07:02 AM

There should be a "ground" wire bonding the antenna to the grounding electrode of the house.
Or, you can install a ground rod close to the antenna, and bond the antenna to the rod, then bond the rod to the house grounding electrode.

Don't just ground the antenna, it must be bonded to the structure electrode.

Yoyizit 07-19-2008 09:40 AM

Quote:

Originally Posted by sweaty (Post 140638)

I refuse to pay for cable TV or satellite.

If you decide your TV picture lacks sharpness you may want to get a new, computer-designed antenna; they should have better frequency response to the received signals.

J. V. 07-19-2008 10:05 AM

Hope you have your converter vouchers. In Feb 2009 you will not be able to get an a analog signal anymore. You will have NO television if you do not get the converter box.

"I refuse to pay for cable TV or satellite".

Frankly, I don't know how you do it.

Yoyizit 07-19-2008 10:38 AM

And if you have a VCR, it goes downstream of the convertor box, not upstream.
Even low resolution TVs seem to have a sharper picture with the hi def hi res signal.

sweaty 07-19-2008 12:12 PM

My panel is on a different side of the house from the antenna. I don't want to see unsightly wires coming down the side of my Tudor house. Neither would the wife. Can I just connect the ground to a ground rod near the antenna?

How do I live without cable or satellite?

1. I'm cheap. It really helps.
2. 95% of the content is trash. Why waste my time?
3. I'm too busy to watch the idiot box anyway.

I want to get signal from this antenna because I already have it and I want to watch one of my former students compete in the Olympics this summer.

chris75 07-19-2008 12:18 PM

Quote:

Originally Posted by J. V. (Post 140705)
Hope you have your converter vouchers. In Feb 2009 you will not be able to get an a analog signal anymore. You will have NO television if you do not get the converter box.

"I refuse to pay for cable TV or satellite".

Frankly, I don't know how you do it.

Some TV's already include this converter built in, I have and use an Off-air antenna as well, ( I have Satellite too...) but an off-air antenna is great, I get ALL my locals in Hi-Def, with no compression unlike catv and satellite.

Yoyizit 07-19-2008 12:39 PM

From the TV rehab center. . .
 
Quote:

Originally Posted by sweaty (Post 140751)
1. I'm cheap. It really helps.
2. 95% of the content is trash. Why waste my time?
3. I'm too busy to watch the idiot box anyway.

We're trying to kick the extremely addictive Cable habit, and looking into that service where you get disks by mail with movies you want to see.

But if you want to look for and interpret movie symbols, you can watch Goodfellas as many times as it takes.
Good movies=good symbols, skillfully done.

Scifi channel=bad movies, symbols that are too obvious, overdone acting, body language that does not match the emotions a reasonable person would be feeling in the situation.

Furd 07-19-2008 01:45 PM

Going back to the original question I would strongly advise you to run a new coaxial cable to replace the existing "twin lead" on the antenna. It has never been acceptable to run twin lead through gable vents and inside of walls. This type of cable is notorious for picking up stray signals and also dissipating the desired signal by being in touch with the building structure.

You will need to use a weatherproof matching transformer (balun) at the antenna to convert the 300 ohm antenna signal to the 75 ohm standard for coaxial cable. I also suggest that you use type RG-6U quad shield cable rather than the less expensive RG-59U cable.

You DO want a lightning protector on the cable and you DO want to ground the antenna mast to the grounding electrode system on your power service entrance.

TazinCR 07-19-2008 04:00 PM

Go to Radio Shack and get mast mounted signal amplifier and you will not regret it. I have used one for 15 years. You can pick up channels that are crystal clear.

http://www.radioshack.com/family/ind...e%2FAmplifiers

JohnJ0906 07-19-2008 08:05 PM

Quote:

Originally Posted by sweaty (Post 140751)
My panel is on a different side of the house from the antenna. I don't want to see unsightly wires coming down the side of my Tudor house. Neither would the wife. Can I just connect the ground to a ground rod near the antenna?

You can use a separate ground rod, but this rod MUST be bonded to the main electrode.

Without this bonding, voltage induced by lightning will try to find a path through your TV set. It won't like that, I assure you.


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