Latest test results: with both blocks connected to each channel, 130 ft of mainline per channel again, signal 10 everywhere with PS2.0 steam loco. TMCC signal remains NOT connected to layout. After adding about 30 feet of 10 gauge wire for voltage drop reduction, in parallel with existing 14 ga lines from TIU output to track bus on one block, still signal 10 everywhere. No sign that capacitance from the added heavy wire did harm in this instance. Similar 10 ga addition planned for other block, will report.
Waiting for alternate potentiometer suggested by GRJ to go in DM TMCC buffer, to further reduce signal voltage/amplitude of buffer output. Will see if that allows TMCC to be connected without wrecking DCS signal.
