>
> > Marantz uses a Philips protocol that they call RC-5 on
> > PMD501 and PMD502 professional cassette decks.
> > Does any one know what this protocol is?
> >
> > I plan to control it with a PIC based protocol converter.
> >
> > Thanks,

Try

http://falcon.arts.cornell.edu/~dnegro/IR/rc5.html

There's lots of other IR remote control info on those pages, too.

Georg.