Hi Dan,Nice site ,Have added it to my favorites.Have noticed that you are using plugs for the reciever wires ,instead of soldering them direct to the board,,Good idea they tend to be fragile here (wires breaking )
  A couple of questions what is the difference between the RC2 and the RC3 (apart from the above)do they have the newer chip.Will the sound card work with the RC2DBC and will it work with the standard DBC.

 regards pete