Presented at the 6th Workshop on Electronics for LHC Experiments, Krakw, 11 - 15 September 2000

At the LHC the 40.079 MHz bunch crossing clock and 11.246 kHz machine orbit signal must be distributed from the Prevessin Control Room (PCR) to the TTC systems of the 4 LHC experiments, to the test beam facilities in the West and North areas and to beam instrumentation around the ring