I'm trying to enter the local frequency 154.30250 directly. I press the VFO/MR button, then the F-INP button, then start to key in the frequency. I get as far as 154.302, but when I press the 5 I'm asked whether I want a single sweep or a continuous sweep. If I choose one, I'm back to the 154.302 freq. If I use the knob to raise the freq. to 154.30250, I get 154.31250. It looks as if the tuning step is 12.5. Is it possible to change the tuning step so I can receive frequencies with five digits after the decimal?