I just picked up a Chinese Radio Beacon on my pip-boy well exploring the top left part of the map, and I swear it's the weirdest of all signal's. Five seconds of static go by then suddenly and randomly a Chinese man with a rough voice yells out "Bison,Bison".
Does anyone have an explanation or background story to this, I would really like to now what it's all about.

As with other radio signals, the closer you are the less static you find on the channel. Look around......

By chance have you gone through a place called "Mama Dolce's"?

If not I won't spoil it for you, but they are related.