I was wondering if I was to upgrade the receiver to say one with more features, how about the calibration, would I be able to copy the settings and then replicate them in the new receiver (presuming it is the same brand)? Or does one have to recalibrate every time? Is there a functionality difference between the primary and secondary receiver? I am getting a two receivers and the one that I need is one with a digital output, whereas my parents who have a basic 27" TV has no use for the digital output and can get the cheaper model, I'm just wondering if there is any requirements as to which receiver is the primary one and which is the secondary one and what's the difference between the two? Jay ------------------ HUGBEES! My Equipment List Rider in the 2001 Alaska AIDS Vaccine Ride Wanna help?