Hi John, I'm getting an RX-320 to supplement my AR7030, so I can run frequency profiling (when it's available in ERGO 4) with the Ten-Tec while actively DXing using the AOR. For ERGO control of two receivers, I know that unique names need to be given to each radio. However, are two serial ports needed on my computer? I couldn't find mention of this in ERGO 4's Help file. I have three or four ports available on my desktop PC, but I'd need a converter to come up with another serial port on my notebook. Also, can both receivers be "active" at once? That is, can the RX-320 quietly build up frequency profiles in the background while I tune around with the AR7030? Maybe this will require two PCs each running ERGO. Thanks for the clarification on this. Guy Atkins Bonney Lake, WA dx@xxxxxxxxxxxxx