C Weighting Filter, do a google search to find: http://en.wikipedia.org/wiki/Weighting_filter
It's an audio filter option... nice to have if you need it. s. > "ve1ii" <bhar...@...> wrote: > Hi, could anyone give me some information on what the C MSG feature is for on > a Sinadder Model CML-1. There is an on off switch on the front panel for > this but I don't know what it is for. > > Also, if anyone has a file for this particular Sinadder I would sure > appreciate obtaining a copy. > I think it is basically a Sinadder 3 but am not sure of any differences in it. > > 73, > > Bruce, VE1II >