I’m about to pull the trigger on a RSP2 for the go kit. Since the 857D is not known for having the best receiver I intend to use the RSP2 for RX on HF and V/U with shared antennas. So a few things come to mind; a) not destroying the RSP2 when transmitting or someone nearby is transmitting, b) having the 857D track the RSP2 frequency, c) when operating digital modes, use the 857D for TX and the RSP2 for RX. So my thoughts and gaps for implementation are: a) Add TX/RX relays and a front end protection circuit to the RX side of both rigs. I still need to dredge through the 857D manual to see if TX delay is available. (Will also use a BCB filter and Bandpass filters.) b) Install and learn how to use Omni Rig. c) It seems possible but, need to do some homework. Is anyone doing this? What am I missing? I like to do things right the first time around rather than smacking myself on the head and starting over.