Timeline for Are there types of standard coaxial cable with a propagation velocity of 0.9c? What would be the application?
Current License: CC BY-SA 3.0
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| Feb 27, 2023 at 15:13 | answer | added | Hoagie | timeline score: 1 | |
| Feb 27, 2023 at 15:05 | comment | added | Hoagie | The high velocity specs translates into lower loss, more air than plastic and more copper $$ more rigid and more bandwidth were all standard rigid coaxial trunks for 300+MHz CATV in the 1980’s before fibre was more cost-effective. Reducing C from lower mu was the goal while maintaining impedance error tolerances from O/I diameter ratio damage | |
| Sep 25, 2017 at 19:52 | answer | added | uhoh | timeline score: 3 | |
| Sep 25, 2017 at 14:59 | vote | accept | uhoh | ||
| Sep 25, 2017 at 9:51 | comment | added | Agent_L | 99% of times when you see cable performance measured in fraction of lightspeed, it's just a marketing gimmick in order to sell veblen goods. Fasten your wallet and look up "audiophile cable". | |
| Sep 25, 2017 at 4:55 | history | tweeted | twitter.com/StackElectronix/status/912178643723579392 | ||
| Sep 25, 2017 at 4:07 | answer | added | analogsystemsrf | timeline score: 4 | |
| Sep 24, 2017 at 16:49 | answer | added | Ale..chenski | timeline score: 7 | |
| Sep 24, 2017 at 16:44 | answer | added | The Photon | timeline score: 14 | |
| Sep 24, 2017 at 16:38 | history | edited | uhoh | CC BY-SA 3.0 |
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| Sep 24, 2017 at 16:21 | comment | added | Joren Vaes | Links like the ones mentioned by @Transistor also exist between London, Berlin and Paris, if I am not mistaken. | |
| Sep 24, 2017 at 16:08 | history | edited | uhoh | CC BY-SA 3.0 |
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| Sep 24, 2017 at 16:04 | comment | added | uhoh | @PlasmaHH right. It's often important to know it, and in some situations that it be very stable, but I can't think of any reason why it would need to be as fast as possible. | |
| Sep 24, 2017 at 16:04 | comment | added | Transistor | I haven't a clue. I don't think coax is used for long distances anymore. Fiber took over a long time ago. | |
| Sep 24, 2017 at 16:02 | comment | added | uhoh | @Transistor more like a ms than a ns. So this cable was invented for high speed stock trading? | |
| Sep 24, 2017 at 16:01 | comment | added | PlasmaHH | The "best" I have seen is around 0.8x and I have never seen a case where it is necessary to have a special factor, just some where you need to know it. | |
| Sep 24, 2017 at 16:00 | history | edited | uhoh | CC BY-SA 3.0 |
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| Sep 24, 2017 at 16:00 | comment | added | Transistor | Signals in a hurry? I have read of using line-of-sight tower to tower laser links from NY to Chicago to shave a few ms off the fiber transit time to give a competitive edge to stock exchange trading companies. (I've also read of a company adding a 32 km coil of fibre in their switchroom to add a few ns delay to users to limit the rate of transactions.) These thinks matter to some folks. | |
| Sep 24, 2017 at 15:52 | history | asked | uhoh | CC BY-SA 3.0 |