Forum Discussion
Gdetrailer
Apr 09, 2015Explorer III
older_fossil wrote:TenOC wrote:
Can coax connect to ethernet. Cat5 and Cat6 has 4 active wires. Coax only one?
The first Ethernet (10Base5) used a thick coax cable (0.375"). To connect to it you had to bore a hole through the jacket, shield and insulation to the center conductor. Then a "stinger" or "vampire" style connector was clamped onto the cable. Life got a lot easier when "Thin Ethernet" (10Base2) was developed which used common RG-58 (I believe) coax with BNC connectors. Later Ethernet evolved to use cat-4 twisted pair wiring. As Ethernet speeds were increased wiring specs were upgraded to cat-5 and cat-6. Note that the first Ethernet was a shared wire with lots of devices connected. Twisted pair Ehternet connections are all point-to-point wires between devices and/or hubs.
As older_fossil sort of mentioned, Coax USED to be used, it IS OBSOLETE.. The problem with Coax is was only spec'd for 10 mbps connections but OFTEN collisions on the network often reduced the speed to 4mbps to 6mbps. This placed it as about the same speed as several other outdated topologies like Arcnet and IBM Token ring (first version of Token ring was 4 mbps later increased to 12 mbps)and further back with the original network called "base band" (Token ring was "based" off this).
Thick net used RG-8 and thin net used RG-58. Both are 50 ohm coax. I have worked with Thicknet, Thin net, Ethernet over optics and current Cat5/6 Ethernet not to mention all the other topologies I mentioned above...
If you want to read up on coax based Ethernet HERE is a good link that has a good explanation of it.
Ethernet on Cat5/6 is hard to beat especially speed wise.. A gigabit connection is sweet.
As far as distance goes, it isn't about signal strength that is the problem, it is the TIMING of all the network packets. Once you go past 328ft on a segment the TIMING of the packets becomes a problem..
To get past the timing issue you NEED to add a "repeater" which takes all the network packets and re-times them so the collisions are less of a problem..
With a repeater you can easily extend Cat5/6 up to 2,000 ft and still get a gigabit through put.
If speed is not an issue you can get up to 6,000 ft at 100 mbps using a proper repeater on cat5/6..
Here is info on repeaters..
LINK
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