[hiro, JJ1FXF]

Graham,

Thank you for checking your receiver. Yes, mine is D* type one.

Now I recognize the rotary switches need to be cleaned up somehow, but shorted antenna terminals are OK and its schematic is wrong anyway.

So I need to prepare just a long wire for my 9R-59D or maybe I modify to float the GND side of SO239 connector to connect my dipole antenna of ham radio.

Thank you all. I’ll try to find other reason why the receive sensitivity is poor on my 9R-59D.