"Not a problem." Senku answered with a shake of his head. "The thing about radios, provided this one still works in a manner I'm familiar with, is that you can convert them. It's picking up a frequency, it wouldn't take much modification to send something back on that frequency."

He nodded though, at both of their suggestions. "That would be ideal. Trying it everywhere we can on the train, and not just once. Different times of the day, different days." Senku said, thinking about experiment parameters.

"And just as importantly, doing the same thing off the train. I'm not willing to mess with it until we've accomplished those things."