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I ran across this video about the TMCC system and it seems to have some misinformation about how the TMCC signal propagates. I remember Dale went into this a long time ago, when Mike Reagan from Lionel explained it similarly. He sounds like he is describing how the DCS signal travels, not TMCC.

Also I'm not sure about his description of how 60 Mhz is counted. Sounds like he is counting half cycles.

Please let me know if I am missing something.

Fix Legacy Signal

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I ran across this video a few weeks ago. Yes, he's confusing some of the facts.

However, once I saw him pull up a drawing I realized he's essentially plagiarizing Mike Reagans Lionel CS video on this back in 2011.

Here's the original from Mike Reagan: https://youtu.be/UQ-hiIvPxVs

The very fact that he says this potential signal issue is unknown is untrue. Mike Reagan clearly discussed it in his video 12 years ago.

With all due respect to the youtuber. I don't see what the value is in copying other people's work. I guess it generates clicks/views.

Last edited by RickO

Dale's explanation was the technically correct explanation of exactly how it works.  I have to disagree with some of Mike's explanation, starting right near the beginning where he talks about the zero crossing and sync pulses.  There's nothing like that in the TMCC protocol, and the TMCC carrier and data stream is continuous whether AC is present or absent and doesn't give a hoot about zero crossings.  There's also no "halo" around the track, the track signal obviously is conducted directly to the board through the wheels, right along with the power.

I suspect his Legacy base was damaged with the electrical issues he spoke about. He’s most likely compensating for the decreased signal from the base.

I like GRJ find Dale’s explanation to be correct. Unfortunately the incorrect information is out there and is getting repeated and folks not knowing take it as gospel.

Last edited by MartyE

@gunrunnerjohn I'm sorry I didn't get to meet Dale.  I'm an EE as well and his explanation is spot on.  I think what people have a hard time grasping is that when your body being near the locomotive helps the signal it's the earth ground that needs enhancing not the track signal.  The parallel tracks and signal bridge example was a good one.  The grounding of the wall wart is really important and in old houses that may require running a new circuit properly tied to earth ground to the train room if there are signal problems.

Marty, perhaps he read this thread and decided to end any disagreement with his masterpiece.

I refuse to delete any comments on my channel unless they are vulgar or in poor taste.  If someone wants to dispute what I have presented, there is opportunity for one or both of us to learn something. I have a thick enough skin to take some constructive criticism even if it doesn't agree with my presentation.

BTW I give credit where credit is due.  Putting content out is difficult when so much else is going on especially with limited resources. I have a whole new respect for the bigger guys like Chris, JD, Eric, Chris etc.  I certainly don't fault his effort and if you didn't know any better that is the information at hand which came fro a Lionel source at the time.

Last edited by MartyE
@MartyE posted:


BTW I give credit where credit is due.  Putting content out is difficult when so much else is going on especially with limited resources. I have a whole new respect for the bigger guys like Chris, JD, Eric, Chris etc.  I certainly don't fault his effort and if you didn't know any better that is the information at hand which came fro a Lionel source at the time.

I just think in this instance. The information is too similar to what Mike Reagan posted. If he were to reference the other video and give a refresher that would have been in better taste, but I guess thats my opinion.

Not unlike everytime I see a video of aother "hobbyist" driving to the hobbyshop discussing products or whatever. I know that idea was originally Eric Siegels.

Having said all that. Your "unboxing" video was my favorite, Marty.😉

Last edited by RickO
@RickO posted:

Not unlike everytime I see a video of aother "hobbyist" driving to the hobbyshop discussing products or whatever. I know that idea was originally Eric Siegels.

In this instance, I think it's useful, one guy can't cover everything.  Also, it's nice to get multiple viewpoints.  However, in the case of the subject video, it's obvious that it was plagiarized, and he even repeated the incorrect assertions in the original!

Discussion regarding the TMCC/Legacy LF signal seems ongoing. In the 1950's, my company introduced the first LF based wireless control system, a garage door opener. It operated at 395KC and was fairly straightforward in its propagation profile. It was subsequently removed from the marketplace when higher frequencies became licenseable. A system based on a higher frequency is a bit simpler 

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