Yeah, I bought them and have everyone equipped with them. But these things seem like they're too high of a level for me. I'm level 51 and that thing for the radio tower is 55. Am I really somehow undereleveled that badly?
Ahh yes, that valley.
I remember hitting the roadblock at the exact same place. I was crusing along fine until I reached sword valley thing. Stuck there for a day, got out of there, did some sidequest and grinded level a bit. Things are much easier when you gained a few level