TPDD
Manuals
Belt
Search goole or ebay for: "FRW-8.5 belt"
Cable
The real cable has some active components. (TODO, link to schematic of original cable) It's thought that today you could just use a cable like below, using schottke diodes specifically, and it's probably equally as good as the original cable which had transistors.
Simpler Cable that is claimed to work.