Satellite cable Extension

Extending satellite cables becomes necessary when people choose to move their television sets to another corner of a room or a different room, or plan to connect a new receiver to the signal source. While this is a basic DIY project, it is necessary to have a basic understanding of cables, as well as the suitable accessories to join the cables together, in order to get the task done.

Satellite cable connectivity is established using LNB (Low-Noise Block Downconverter) and co-axial cables. Simple extensions such as a longer satellite feed most often involve attaching an extra length of co-axial cable to the existing line. However, those who want to use additional receivers (one in each room) to tap the same signal source will need a Quad LNB for the job.

Co-Axial Cables for Satellite Televisions - Types and Choices

There are different types of co-axial cables, each one with their own properties and applications, but only a few of them are suitable for transmitting satellite television signals.

• WF65 - The thinnest of available satellite cables (their diameter is just less than 5 mm), this type has maximum signal loss (0.5 dB/m) when attached to an LNB.
• WF100 - A perfectionist's choice, this expensive variant, with similar dimensions of the RG6, suffers from a negligible signal loss (.29dB/m) when attached to an LNB.
• WF125 - 7.1 mm diameter, this type of cable loses just .27 decibels of signal per meter.

Alloy (synonymous with RG6) or copper-foiled (WF100 grade) co-axial cables are preferred due to high levels of screening and foam insulation, which not only help minimize loss of signals but can also survive harsh external conditions if the cable is used outdoors. Some of these cables are prone to corrosion and reportedly have an average life span of 5 years when used outdoors with proper protection.

Thinner cables are ideal for extensions within the home where cable needs to run for a shorter length and signal strength is already fairly decent.

While the price of cables may be a deciding factor, buyers should also consider the exact purpose (light/heavy use), length of cable, where it is used (across indoor or outdoor spaces) and the strength of the signal in a given location before selecting a suitable cable.

LNBs for Satellites

These are the special type of devices that are capable of receiving and amplifying satellite TV signals carried by co-axial cables.

Joining Cables

Apart from the cables, buyers should also stock up on the right connector plugs, adapters, silicone grease and self-amalgamating tape needed for the task. Threaded F-connector plugs or push-on adapters need to be fitted at the end of the cable.

To extend the cable, make sure that about 2 mm of the cable core protrudes through the connector on each cable. Bind these two connectors using a suitable threaded "F" barrel coupler to link the cables.

Using silicone grease in the connectors will ensure that the fix is firmly in place. Sealing off the joint with a piece of self-amalgamating tape helps make the unit weatherproof.

When done in the right manner, cable joints usually do not cause loss in signals. It is also possible to join different types of co-axial cables, but results again aren't guaranteed.

While it's recommended that the right length of satellite cable be used rather than extending the line, extensions still help avoid costly replacements, especially when done restrictively.

How to Buy Co-Axial Cables and LNBs on eBay

eBay features a wide range of cables, connectors and other electronic components needed to extend satellite cables. Shoppers can use the search bar on the eBay home page to search for "Co-Axial Cable, " "LNB, " "RG 6 coaxial cable" and specific accessories featured at the site. Alternatively, they can check out products listed under the "Video Cables & Interconnects" category to find the right items.

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