This device is 10 years old, clearly somebody knows at least from which manufacturer the TMC-chip is?

Many of the older Navigon (up to 2009) worked with this in the sys.txt:

[tmc]
saved_config_available="1"
saved_config_classname="NMEA_GPSTMC_AMARYLLO"
saved_config_portname="COM"
saved_config_port="4"
auto_tuning="1"
saved_last_tuning_mode="1"
saved_last_frequency="960"

@Boki_Srb: Have you heard of MixSerDrv?

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