![]() When you think about it, the idea that GHz signals would be sensitive to a delay of 1ft/ns isn’t that surprising. whatever heuristic it uses to determine if the link is gig-capable doesn’t like short cables! so now there’s a big coil of wire *shrug* ![]() i went back to the 6′ cable i had pulled out of a bin, and it did GigE fine! i made another short cable, again it worked with everything but the modem. I tested the short cable, and it works with other devices. i googled it and it is well known that this at&t fiber modem will fail to go into gigabit mode sometimes, and people had been trying desperate hacks like buying different ethernet cards for their PCs. i noticed, it was only connecting 100baseT, not GigE, but cheapest tier of fiber service is 100Mbits nominal and does better than that in bursts. Posted in Network Hacks Tagged ethernet, network cable, RJ-45 Post navigationīut it reminds me… my at&t fiber modem sits right behind my PC (router) so once i finiished setting it up, i made a 10″ cable for it so it would be nice and neat. Then your “cable” is merely the width of the solder joint itself.Īlternatively, you could spend your afternoon learning about other nifty hacks with Ethernet cables that have more real-world applications! This would naturally involve hacking away the plastic casings off a pair of laptops and soldering their motherboards together at the traces leading to the Ethernet jack. We want to see this go to the logical end point, though. While electrically it should work, and it passes a cable tester check, it would be virtually impossible to actually plug it into two devices at once due to its tiny length. ![]() In reality, it consists of just the pinned section of two RJ-45 connectors mounted back to back, wired together in the normal way. took things further, posting a “cable” just a half-inch long (~13 mm). went out the belt sander to one-up that effort, measuring just over an inch in length. Naturally this led to an arms race, with posting a shorter example with two RJ-45 connectors mounted back to back with the bare minimum of cable crimped into the housings. The tiny cable was used to hook up to the keystone jack that formerly lived in that position, as an alternative to re-terminating the wall jack into a regular RJ45 connector. The intention was to allow a Ubiquiti U6-IW access point to be placed on a wall. It all started on r/ubiquiti, where user posted a custom-built cable just over 2 inches long. However, a Reddit community has recently taken things further. Network admins will be familiar with the 0.1 m variety for neat hookups in server cabinets. If you’ve had any dealings with Cat 5 and Cat 6 cable, and let’s be honest, who hasn’t, you’ve probably wrestled with lengths anywhere from 1 meter to 25 meters if you’re hooking up a long haul.
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