When I look at my transceiver output on transmit, I don't connect any antenna to my SDR dongle. I also have a 50 ohm SMA terminator that I sometimes connect to the dongle to greatly reduce the signal it picks up. My transceiver antenna is attached to the deck rails on the same floor as I'm on so there is a fairly strong signal picked up with no antenna on the SDR dongle.
The computer and dongle are several feet from the uBITX on a separate power source. This arraignment seem to work well.
Tom, wb6b
