...it looks like I foolishly purchased some sort of FSK box or teletype modem on Ebay - number 6507938768 and associated parts. Why? It looks interesting. Do I need it? No. It says it is a FuG 03, however I have no data on this. What I find on the web does not really mesh with what the hardware is. Any help? William Donzelli aw288 at osfn.org