Venerable Ethernet provides the backbone of the internet. Ethernet has risen to complete dominance for local area networks over its forty years of existence. The first Ethernet experimentals versions started in 1972 (patented 1978). The commercialization of Ethernet started in 1980′s. At first Ethernet technology remained primarily focused on connecting up systems within a single →
Ethernet started as a network that runs over coaxial cable. Over years the Ethernet has started to use mainly twisted pair wiring and fiber optics for communications. There seems to be every now and then still questions related to running Ethernet over coaxial cabling. This is the first part of multi-part post on running Ethernet →
While fiber over sevage systems exist, this old page looks more like April Fool’s joke than real practical instructions.. enjoy https://archive.google.com/tisp/install.html →
What is a drip loop? https://blog.solidsignal.com/tutorials/what-is-a-drip-loop/ The drip loop is a slack bit of cable that sits lower than the rest. The whole purpose is to let water pile up at the bottom and drip off. If your cables were tight, water from outside could travel down the wire and get straight into an outlet →
Telecommunication and networking has been and will be one of the core technologies in helping the evolution of mankind and technology. Here is a quick view to the history of the modern electronics based communications technologies with help of few history articles. “10th March, 1876 – The day when Alexander Graham Bell made the first →
Ethernet cables are all often too long or too short. People on Reddit are competing to invent the shortest possible working ethernet cable. Ethernet cables are easy to crimp together yourself, and industrious folks on Reddit are currently engaged in a race to see who can make the shortest working length of ethernet. The results →
Space had too harsh weather conditions for recent Starlink communications satellite update. 40 Starlink satellites doomed: SpaceX reported last night that 40 of the 49 Starlink satellites launched to low Earth orbit on February 3 are now doomed by a geomagnetic storm. SpaceX said: “The satellites deployed on Thursday were significantly impacted by a geomagnetic →
I got some TAIYO YUDEN 9012R0 LEADED COMMON MODE CHOKE COILS FOR AC LINES and thought some uses for them. The specifications for those from datasheet were: TLH10UA 901 2R0 RoHS Common mode inductance (mH): 0.9 min. Normal mode inductance (mH): 0.067 DC resistance: 0.089 Rated current (A max): 2.0 Rated voltage AC (V max): →
Ethernet over twisted-pair technologies use twisted-pair cables for the physical layer of an Ethernet computer network. Most commonly standards use 8P8C modular connectors (often called RJ-45), and supported cable standards range from Category 3 to Category 8. These cables typically have four pairs of wires for each connection, slower standards (10M and 100M) used only →
Who invented that and decided that it was a good idea to start to use this 10 pin RJ-45 look-alike connector? I wanted to do measurement with multimeter on UTP wiring, took a cable (left) that looked like RJ-45, but nothing worked as planned with it. Ended up butchering a real CAT6 cable (on right) →