By the mid-1980's there were several command control systems in use and even
Model Railroader had published two series on building the CTC-16 and later
the CTC-16e system by that time.  The main problem was they were all
proprietary and you had to pick one, plus most of them were limited to 16-18
unique addresses.  There were even some alternate digital command control
versions to the Lenz one that became the NMRA's DCC standard.

I haven't designed a layout for block control since the early 1980's, even
then I was looking at automating the block control; but then command control
won out over through-the-rails sound. 

Dave Heine
Easton, PA  

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Jamie Bothwell
Sent: Tuesday, February 05, 2013 11:00 AM
To: [email protected]
Subject: {S-Scale List} Re: S-Mod wiring

Bill,
"Command" existed back in the 1960's.  General Electric had a system called
Astrac or something like that.  Alan McClellen used it on his V&O.
Jamie Bothwell
Bethlehem, PA

--- In [email protected], "Bill Lane"  wrote:
>
> David,
> 
>  
> 
> The S-Mod wiring system was designed in the mid 80s well before 
> anything digital or command existed. It is rather flexible to have 
> modules placed in any order. The "restrictions" are rather minimal 
> unlike N Trak with mandatory track placement standards.
> 
>  
> 
> Of course the "Two Dons" are free to comment here!
> 
>  
> 
> Thank You,
> Bill Lane
> 





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