GSM-R is on its way out. FRMCS — the 5G-based successor for railway radio communications — is on its way in. But the migration from one to the other is anything but straightforward. In this episode, Doc Frank talks to Rob van Looveren from the Netherlands, a railway consultant with hands-on experience in FRMCS specification work for freight trains through the European-funded FENIX project. Together they unpack what the migration from GSM-R to FRMCS actually involves: the technical challenges...