Thanks for the enlightened and thoughtful responses provided. It has expanded my knowledge as I enter the world of Command Control using available modern power equipment from Lionel. Prior to this, I have run my limited Command Control equipment via the KW “set for 18 volts” checked by a Fluke multimeter with the fast-acting breaker in the circuit and the Legacy 990 handheld remote.
Although I currently do not have any MTH DCS equipment, I was not aware of the issue GRJ noted about the TMCC direct lock-on and “killing” the DCS signal - Thanks.
ADCX Rob summed up my reason for considering the DPDT configuration and not the Powermaster. There is significant nostalgia (for me) in keeping the KW in the mix when I run my PW Engines and Equipment. It surfaces fond memories of my “first Lionel Train Christmas”.
I had not considered Tracker John’s SPDT configuration and “phasing the power sources” which simplifies the circuit. However, I am a “belt and suspenders” guy based on my career experience and “Murphy’s Law” – if it can go wrong, it will.
Therefore, I will use the DPDT configuration now that it is confirmed, and I will not need to constantly monitor family interaction with the power sources.
