Norton posted:All the radio boards used in RCMC have a two wire connector for the antenna. Its used on steam engines which have a wire for each handrail eliminating the wire nut. Not sure its needed on plastic engines but it can't hurt.
Pete
Correct. However my point was does the two wire connection need to have a closed circuit so the locomotive will "see" the TMCC signal. On previous board designs it is not needed and this was usually one wire in previous command diesels.