Coaxial cables, commonly called ‘coax’,
are the cables that are commonly used for video and satellites
installations. There are many kinds of cables to suit different
applications, among which are the RG59 and RG6. The main difference
between the two is their construction as the RG6 is bigger compared to
the RG59. The inner conductor core of the RG6 cable is thicker as well
as the shielding within the rubber sheath.
The difference between the two, in terms
of construction, results in a better frequency range for the RG6 cable.
RG6 cables are often certified to work up to 3Ghz. Although RG59 cables
may work above the 2Ghz level, it is not always the case and problems
may still appear later as the conditions change. Another key difference
is the much lower attenuation of RG6 cables. With very long lengths of
cable, the attenuation can degrade the signal to a point where it
becomes noticeable. Using an RG6 cable simply means that you are able to
use longer cables before you have problems with attenuation.
A downside to the RG6 cable is when
it is used for applications operate below 50Mhz. A good example of this
is HDTV, which only operates at around 37Mhz. The shielding of RG6
cables cannot properly prevent noise at levels of below 50Mhz and the
signal may be worse with an RG6 cable than with an RG56.
Because of these differences, each of
these two cables are often used for specific purposes despite being
interchangeable. RG6 is the cable of choice for satellite receivers
because it allows for better signal quality as well as insurance that
any future specification that could use frequencies close to 3Ghz would
still be compatible with the current wiring. RG59 is used for video
signals as it would provide the best signal quality for the frequencies
in use. Not to mention the cheaper price per length of RG59 cables
compared to RG6 cables.
Summary:
1. RG6 cable has a thicker conductor than the RG59
2. RG6 cable has better insulation than the RG59
3. RG6 can carry signals of much higher frequencies than the RG59
4. RG6 has much lower signal losses compared to the RG59
5. RG6 cable may not operate below 50Mhz while the RG59 can
6. RG6 is better for satellite signals while RG59 is better for video signals
7. RG6 cables cost more than RG59
1. RG6 cable has a thicker conductor than the RG59
2. RG6 cable has better insulation than the RG59
3. RG6 can carry signals of much higher frequencies than the RG59
4. RG6 has much lower signal losses compared to the RG59
5. RG6 cable may not operate below 50Mhz while the RG59 can
6. RG6 is better for satellite signals while RG59 is better for video signals
7. RG6 cables cost more than RG59
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