Remote Control Track Section No. UCS was required after Lionel introduced the magnetic coupler that were used with Staple-End Trucks in 1949. Prior to the development of the magnetic coupler all of the equipment that Lionel made were uncoupled electronically with the use of the No. RCS Track Section. The controller for these track sections, part No. UCS-40, is the same as what was used on the RCS sections except for the identification plate on the bottom.

The No. 6019-16 instruction sheet that was produced during these years was shared with the O27 Gauge equivalent version No. 6019. A picture of the front and back pages of this sheet are shown below.
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