well...there are qualifications and myths.
1. within your premises, the splitting the coax (FIOs or cableCo) has the same effect. and if your input signal from either source is good, you can split it without any pq loss, specially, the digital channels will show now pq loss. if there is enough signal,you will good pic, else you don't get anything.
I am splitting my cable co signal to feed a modem and 5 video dvices- no problem with any channel.
2. the fios is is PON (passive optical network) upto your house or curb so the coax run is typical small and the general notion is that input signal is better than cable cos signal (i have not taken any measurements yet). in comparison, the cable co fiber network may stop several thousand feet from your home and that part is on coax and meeds repeaters, and theoretically more prone to degradation. as a sample, a friend of mine is able ot split the cable signal only one for the modem.
Originally Posted by Russ1150
I have been told that a split signal with FiOS does not degrade PQ. Was I fed a line of BS? I also have a hard time believing the PQ gets better than my current CC input.