The FT-301D's IF is about 9 MHz. The SRL II Oscillator is 11 MHz, but it is 1/3 undersampling. Not sure what that does to the tuning.
No, the FT-301D does not have electronic tuning. It is all Analog. No USB or Ethernet cponnectivity.
George
Sorry, did not think that it might be that old:-)
Then the SDR tuning will be fixed and not show the rig's frequency unless you set it manually, only practical if you rarely move frequency.
There will be an offset between your IF centre and the SDR centre. I think one of Tony's crystals needed 96KHz sampling to include the IF centre.
You should try tuning the rig to a signal and find it on the SDR.
Overloading could be a reason for bad results.
73 Alan G4ZFQ