Bob, welcome to the conversation. That would be great if you would repost that here. I'm 99% sure I saw it and marked it, but it might take some digging, as I read and mark all topics related to TMCC signal here on the forum, and even some off. I was just gathering the materials for it now. The last piece missing is the car itself. I suspect I will be choosing a lighted caboose as my victim to donate its chassis to the cause.
At first I thought that the R2LC was going to come out of an early TMCC Dash 8, but when I opened it up, it was the old style electronics which predate the plug in boards. One thing caught my eye when I was in there, that was the antenna. New engines have their antennae just below the top of the shell in the form of a plate or a foil strip actually stuck to the plastic.
This unit had its wrapped around the inside of the nose of the cab, much lower than what we see today. The reason I bring this up is, of all my engines, I only have a few of these early units. I don't like the pulmor motors and the chunky bodies. However, one such unit seems to be immune to these signal issues. This can be seen in a couple of GoPro videos shot on my layout. Could the antenna placement be part of the secret to its success?