The inclusion of of technology in a survival story, done realistically as opposed to the “deus ex machina” plot device, can fatally complicate things. A HAM radio introduces it’s own necessary logistical tail, it brings in an element of the “stationary”. This story, I perceived as being very much about motion, keeping on the move, the survival skill of knowing when to get out.
My goal is just to open a door in the imagination of the reader, there are ten questions left hanging and very few are answered. I even left open the “Japanese holdout on Guam” option. This story could go in dozens of directions, but it’s only meant to flash a light on one possible outcome, and give me an excuse to philosophize. The first 2 sections are just dragging the reader up into the broken tower in what I hope is a plausible and entertaining way.