Ardmay

All Railcom does is take away 4 preamble bits out of the DCC signal and place the data in that position. If the command station supplies enough bits the decoders shouldn't even be working in that area. The ESU statement talks about older decoders which are possibly not compliant. Michael

If you have to switch off Railcom when programming it would intermate that the decoder is not NMRA compliant. Railcom does not induce a 'pulse' in to the DCC data stream but just blanks 4 preamble bits from the preamble data stream so should no effect effect the decoders operation. Michael