#thinnet

A Working Test 10base2 ( thinnet ) BUS Ethernet Network in 2015.

10base2 is a fairly resilient technology, even though it is completely outdated now ( and has probably drove a ton of people to the loony bin. and has almost vanished information wise from the Internet ).

I've been toying with this old outdated technology on and off for a few years. most of my issues have been not having 2x 50Ω terminators for each end, and i have been trying to cobble things together. so I finally got it all working using about 6 feet of cable, so I thought to myself let's give this a challenge.

"topology"

50Ω terminator ( in this case it's a 50Ω 10w resistor. and a paralleled variable

resistor, to compensate for the 50Ω and 75Ω cable differences ).

"T" connector.

5 foot 50Ω BNC Cable.

BNC to RCA adapter.

RCA to F connector 3 foot custom 75Ω TV cable.

50 feet of 75Ω TV twin lead coax ( sharing with my OTA TV ).

RCA to F connector 3 foot custom 75Ω TV cable.

RCA coupler.

BNC to RCA adapter.

6 foot 50Ω? BNC Cable.

"T" connector.

50Ω terminator.

each "T" connector goes into a HUB that has both 10BaseT and 10Base2 BNC, then one end goes to my switch the other goes into a computer.

so after running this over approximately 67 feet of mismatched inappropriate cables, adapters and fine tuning the variable resistor ( so that I got a reading of 25Ω collective ).

i powered everything up and was….

immediately online!

with a reliable connection and the maximum speed that my ISP provides ( 8Mbps down ).

somewhere in my mess I have an ISA networking card with 10/100BaseT and 10Base2 connections which will allow me to have 3 devices connected to the

bus network, currently I'm only able to do 2 because that's all I have at the moment.

Photos at…

http://preview.tinyurl.com/10BASE2

Or

http://tinyurl.com/10BASE2

Or https://drive.google.com/folderview?id=0B0cGUhCi_7WBenZwUVFpUzNlZVU&usp=sharing

More Info at... 10BASE2 - Wikipedia https://en.wikipedia.org/wiki/10BASE2