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| Re: Canarsie CBTC (98026) | |||
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Re: Canarsie CBTC |
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Posted by SelkirkTMO on Mon Jun 13 09:35:19 2005, in response to Re: Canarsie CBTC, posted by 28481k on Mon Jun 13 09:22:54 2005. But it gets WORSE ... with both VACUTRAK trains out of service, there's another issue that nobody's mentioned. STELL DUST ... "ferrite" accumulation on yon sacred antenna. Won't take long either, ESPECIALLY in today's humidity for that "load" to burn out RF amplifiers.And while steel dust has always been problematic with pretty much any type of equipment, it's even a more serious problem with RF amplifiers feeding into RF short circuits that used to be an antenna. *THAT* was what killed "Identra" because NYCTA didn't have enough spray bottles of Pledge (tm) to keep the stuff lit ... at least wayside inductive apparatus would NOT suffer similar effects from steel dust beyond MINOR attenuation ... if that SWR gets up high enough at Microwave frequencies, expect a party in someone's pants. :( For those who question my concept, put a plate of shaved rust into your microwave oven. Enjoy the show, thank you very much. Heh. So there, another day, another Unca Selkirk LUDDITE moment ... :) |
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