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PASSIVE DEVICES USED IN ANTENNA INSTALLATIONS (Antenna Installation)
 

PART 1

These materials are used in antenna installations but are "not" powered. These devices will always have a loss or attenuation in your system there when ever implementing one of these device include it in your LOSS/gain calculations.

  • Cable
  • Connectors
  • Splitters,
  • Diplexers,
  • Taps,
  • Outlet Plates

Cable:-

Did you know that RF (radio frequencies) actually travel on the outter casing of the core conductor? strange --

because you'd expect that as like AC/DC voltages travel in the core of the conductor. This effect is called the "skin effect". Taking on board that the actual RF signals travelled to your cable by air it's only natural that those signals can once again travel away from the skin if it's not sheilded from doing so, hence, it's good to used quad coaxial cable. An unshield cable can act as another antenna for RF.

If your cable has a defect or kinked the signal can radiate back and forth which will have an affect on the signal.

 
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RG stands for "Radio Grade".

 

Preparing the Cable for the Connector:-

I've cut to the chase with this particular part - just click on the video (right side)


 
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Connectors:-

As you can imagine there are many variables between the antenna and the back of the TV set. The connector is another very important part of the network and must be looked up with the greatest care. The older connection types such as the "separate ring F-Type" and the "saddle & clamp should be avoided at all cost now that we are in the digital age. The "Hex - crimp type" are probably the most used and this is simply because they are cheap but also deliver an average connection.

Hex - crimp type Linear Compression type

 

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The linear compression type (see above) is the much more superior of the two. It is more weatherproof however, all connectors require self-amalgamating tage to fully weatherproof them. There is one other type of connector called the "Double Bubble Compression connector and I suppose this would be the top of the line connector. It doesn't need weatherproofing tape to secure it.

Passive Devices used in Installations Part 2

 

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This page was last modified on 1st December 2010 and maybe out of date with regards to its information at the time of reading this article. The information above is only intended for use a guide and should not be 100% relied upon as a substitute for official manufacturer technical advice. Quality Electrics disclaims responsibility for any damage, claim, or liability any person may incur, whether caused by negligence or otherwise, as a result of anything contained in our articles.
 

 
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