I have a Lionel Susquehanna Dash 8-40B, Item Number 6-18211. These units were advertised as having a LionTec digital ready reverse unit circuit in it. The features of this unit were that it started in forward after the unit was off for a few seconds. This would allow multiple unit lashups. The ads also mentioned the circuits were upgradable. My question is what did "upgradable" mean? Was there some other circuit that came out later that could be added to make the unit TMCC compatible?
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