As far as I understand, you are trying a second attemp to the topic you already started 10 days ago here :
I can not answer anymore on the previous topic, so I will do it here :
Tell me if I am wrong, but I understand that you are wondering why you can receive a NDB signal with your default C172 ADF tuned to 356kHz, while flying over KSEA Seattle, but not while flying over KSAC Sacramento.
In real life, NDBs have a widely variable range, mainly depending on the emission power, the altitude, and the electrical property of the atmosphere. This range is usually between 50 and 150Nm I would say. In X-plane, I do not think all these altering effects are simulated.
I had a look at the charts : the only NDB I could find, in the "vicinity" of KSEA-KSAC was called PND, for Portland. From Seattle, you are 115 Nm North of Portland, and 540Nm North of Sacramento!!! I then performed a test in X-plane 11 rc1 : With the default C172, I could receive PND in a range of 60Nm only. So I could receive PND neither from KSEA, nor from KSAC, which seems to be perfectly plausible.