This object configures the GPS antenna cable length in meters, used to compensate for signal propagation delay through the cable, though it is now deprecated in favor of f3GPSReceiverPortAntennaDelayValue. Admins on older configurations still use it to tell the receiver how long the antenna run is so it can correct the timing offset the cable introduces. For example, on a legacy deployment with a 50-meter rooftop antenna cable, the admin would have set f3GPSReceiverPortAntennaCableLength to 50, though new deployments should configure the replacement delay-value object instead.