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Belden ProSNS Connectors

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Old 04-26-2017, 04:36 PM   #1  
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Default Belden ProSNS Connectors

Hello-

Newbie here. I'm buying the Winegard HD7694P antenna (arrived at this by doing the full workup and posting reports for discussion in Local HDTV Info & Reception sub forum).

I will connect coaxial from antenna directly to samsung 40" T.V model LNT 4065F. The 50' of Belden cable comes with: "Pre-terminated with Belden ProSNS™ Universal F compression connectors to deliver the highest performance in coaxial cables".

My question, will these supplied connectors directly connect to there respected ends, the antenna and T.V., no additional adapters etc. needed?

I assume the cable from antenna to T.V. does not have to be grounded in anyway, that this is a direct connection. There will be no amplification or splitter involved at this initial hookup.

Thanks for any comments related to my question-

Robes
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Old 04-26-2017, 04:40 PM   #2  
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As long as the coax is 75 ohm they should connect to any TV and antenna if the antenna has a baulin transformer on it. (most have then now days)
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Old 04-26-2017, 05:36 PM   #3  
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Quote:
Originally Posted by Terryl3 View Post
As long as the coax is 75 ohm they should connect to any TV and antenna if the antenna has a baulin transformer on it. (most have then now days)
Thanks for the reply. The coax is 75 ohm, that which the antenna recommends. I have checked Winegards web page & spec sheet on the HD7694P and no where does it mention anything about baulin transformers and their antennas. I also looked at specs from other retailers who sell it & no one mentions it, no Google search brings up anything that I can find either.

Back to Winegards web page I did a search and spelled baulin as balun and got the following:



So, they carry a transformer for replacement yet don't offer it as an accessory in the antenna package. Guess I'll need to spend the extra $13.00 to correct their antenna. Would have been nice if they mentioned you need this before buying and shipping the antenna but that's how they make money in extra shipping costs ....

Thanks for the info on that,
Robes-
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Old 04-26-2017, 08:18 PM   #4  
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Some of the new antennas come with it pre attached, but it's best to have one handy in case it doesn't.

And the baulin or balun transformer is to match the balanced 300 ohm antenna to the un balanced 75 ohm coax, the antenna has two sides, this makes it a balanced system, the coax only has one center conductor with a shield that is normally grounded, this makes it an un balanced system.

So it's a BALanced (300 ohm) to UNbalanced (75 ohm) transformer, in some places they spell it funny, some of us old codgers spell it any way we feel like. LOL
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Old 04-27-2017, 11:03 AM   #5  
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Hi Terryl3

You said, "the coax only has one center conductor with a shield that is normally grounded, this makes it an un balanced system".

Is the shield attached to the terminal connector & becomes grounded when it is screwed into the TV Ant In jack? I'm thinking (but must be wrong) that if the coax is grounded it would be balanced, I think your saying it is grounded (normally) and is unbalanced. Essentially, I just plug the coax into the baulin antenna end and the other end connect directly to the Ant In on TV.

Here is why I'm a bit confused. See my satellite internet coax connection attached.






Not really the same but seems related. The coax here has another wire attached to its black covering (comes from the dish feedhorn housing), is pulled and stripped away then attached to the coupler clamp which (by green wire) then runs to the garage ground.So here, it looks to me that the satellite feed is grounded and the coax (if the coax shield is attached to the coax terminal connector).

But, you are saying (using the baulin) just connect each end to antenna & TV and run, correct?

Sorry for my ignorance but it's genetic, I had nothing to do with it-
Robes
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Old 04-27-2017, 04:12 PM   #6  
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OK in the old days they used a flat line twin lead that was 300 ohms, you had two conductors and nether side was grounded.

Now days the antennas are still a 300 ohm balanced system, if you look at the antennas there are two sides with wire cross overs from one side radial to the next one back on the other side.

When they started using the 75 ohm coax, one conductor is located in the center with a insulator between the center and the shield, the other was the shield, this shield is grounded to prevent secondary RF intrusion and help deliver the signals to the receiver (TV set) with as low a loss as possible.(grounding the shield help keep stray electrical pulses from getting into your house)

Now this presented a problem, if you directly connect the coax to a balanced TV antenna then one side will be grounded, you would loose one half the antenna system.

So a matching transformer is used, it normally has two winding's around a ferrite core, (a small doughnut) this is done to isolate the two different setups, one side is a balanced input at 300 ohms, this 300 ohms is the systems inductance, not it's conductance, the other side is a 75 ohm inductance with one end of the lead tied to ground. (there are several types and ways to wind this coil I will not get into that part)

So with this matching transformer you can isolate the two systems and still get a good signal.

The matching transformer (Bauln) only needs to be at the antenna, the TV set has an "F" connector on it, the coax will directly connect to this input.


The extra wire on the outside of the coax for the satellite system is called a traveler, this can be used for suspending the coax between buildings or from a telephone pole to the building, it can also be used to attach the coax to a wall.

It is copper coated steel, it normally does not need to be grounded but some installers do, it is not that good of a conductor, so on my satellite installations I run a #12 gauge copper ground wire, this for safety and to enhance the systems true ground.


Oppps sorry too much coffee for lunch, I'm rambling.
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