How did GIs on islands in the Pacific War listen to Tokyo Rose? On field radios? What type? Were there radios available with loudspeakers so a group of soldiers might be listening together or just a set of headphones?
A great many of the service persons in the PTO were "treated" to Radio Tokyo on AM by their commanders for the music as much as anything. It was one of the more powerful stations in the area after all. In lieu of that option, another group of men were familiar with radio theory and had a working knowledge of how to construct what were called "crystal sets". They could take that skill and construct what were called "Foxhole radios" using a razor blade and other easily scrounged stuff. The only difficult part would be the "head/earphone", but those were also around if you knew where to look and how to barter. Here is a good site which describes the process: Foxhole radio - Bizarre Labs Makes for interesting reading, and remember FM was a new technology and only in very limited use.