by ApproachMedium
WhartonAndNorthern wrote: ↑Thu Dec 22, 2022 1:46 pm4 aspect is not 9 aspect dual code. I stand corrected on the FEC use of CSS.ApproachMedium wrote: ↑Wed Dec 21, 2022 11:10 pm Brightline is not currently operating on lines with cab signals. The un opened section will be cabs, but the current section is not.Florida East Coast had their own cab signalling system on the main line. It was slightly different from the US&S 4-aspect system. I wasn't aware it was removed.
For those who care, the Cab signal/ACSES package in the Siemens equipment was originally developed by the PH&W corp from Pittsburgh PA. Very very good system, amtrak had it in all of the AEM-7s. When Siemens announced contract with amtrak to build the ACS 64 they quickly went and purchased suppliers, like PH&W so that they could have full inventory and product control over what went into the locomotive.
Since Siemens has taken over PH&W the once great, flawless system has gone down hill fast. ADUs often go dark, esp on control cars. Strange faults happen. TSR radios do not always work right. Then the Metro North software mod came in, and that made even more problems. I do not know if the stuff is still being made at the same facility, but controlled by siemens now or if its being made in Cali with the locomotives. I do know that the siemens propulsion drive system constantly has issues with interference via EMI of the operation of anything radio related to the PTC, ACSES and cab signal system. The cab signals pick up codes in the rail using the above mentioned frequencies. Sometimes the traction motors interfere with this and cause loss of the 250hz carrier codes or all cab signal code together.
No good deed goes unpunished.