Zoom in a LOT more on whatever signal you mean. This image is too zoomed out to make out enough detail to even venture a guess. The one at 7883 kind of looks like an AM BC station, but not enough sidelobe texture, and further, on this scale it looks like it could be well over 100 kHz wide, far too wide to be a BC station.
Typically you want to see the signal in question taking up at least 10% of the displayed width, and preferably 20+%, when trying to ID an unknown.
T!