When Lionel went from the tmcc base to the Legacy base, they most likely used a standard RS232 serial port chip to be compatible with a personal computer and the future computer applications with Legacy. I think these chips are generally lacking in terms of sourcing power. So here we are needing to drive some boxes like we did with the TMCC base, especially on larger Legacy layouts. Lionel may address the issue, but often the 2nd and 3rd party solutions are quick and sometimes better tailored to 2nd and 3rd party product needs.
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