Just be aware there are 3 current versions of the MFJ-1708... The base 1708 is a true T/R Switch for old boat anchor rigs... I don't think you want that version...
The two newer ones let the transceiver and the SDR share the same antenna during receive... So there is a 3 dB loss as two 50-ohm radios are connected to the antenna at the same time... Think of it as a Tee Connector during receive... During Transmit the transceiver is connected to the antenna and the input to the SDR is shorted to ground to protect the SDR's front end...
