iPod 7th generation won't change radio station

My iPod switched to a different radio station while I was listening to it and now I can't get it to change to any other station. Is it possible to have it keep at one station? I'd like to do that once I can get it to switch back to my preferred station, if that's possible. It is frequently switching to a different station on me. This iPod is very quirky and is driving me nuts. I did a reset on it but that had no effect.