I,m new in the DCC field. I have a Life Like Mopac GP-18. I found an article about how to convert it to DCC. http://members.aol.com/sprshops/helphint.html A Digitrax DN93 or DN93FX is used , but none of these 2 items is listed on the Digitrax website. Is there any replacement one ? Is there any other brand of decoder that might do the job ? Tia for any info.