Hi.
I did a quick cabeltest to see if a long interface cable would spell trouble.
Tested cabellenght from IR receiver to print circuit.
2 m TP Cat 5 all ok. Grey cable.
20- m strait 4 lead cabel, shielded. White cable. NO Problem !!
If you use CAT6 cable you could probably go further.
Still this is only in test/bench not track mounted. Se picture.