David, Pi running the TCP server with the RSP1A . Windows with SDR Console running in RTL_TCP mode works.
On the Pi run the rsp_tcp server with theses parameters as a start, rsp_tcp -a 192.168.1.10 -p 1239 -a being the local address being that of the Pi -p being the port.
On the windows PC in SDRC set up a new RTL Dongle TCP definition using the address and port above, in the gain box select none and then enter -A28. -A28 being the gain reduction, settings between 59=max 20=min can be used.
That's just a start you can also set other parameters as well.