Hello Vic! > > If you have a remote KAT100 connected, disconnect it and see if > > the KDSP2 works again. > > Bingo! It was connected to a KAT100 which is not in use now, so it was > powered down. Disconnecting the interface cable made it work... This is good news, thanks for testing and reporting back so promptly! I hope you enjoy the new capbilities the KDSP2 brings to your K2/100. 73, Lyle KK7P