At 21.23 30/01/2005, you wrote: >Sounds like they repackaged the 8620 hardware to go in the 8690. >-John No, quite different shematic... band switching is by coax relays, with BNC connectors used up to 4 GHz (yes, they work, but...) It appeared before the 8620A/86222, I think. Marco IK1ODO