Fun, thank you! I thought I got the theme but don't get the "1/5" in the clues. Any hints?
Small nit on 26D: broadcast TV frequency bands in the US are all below 1 GHZ (UHF gets close but not there). An alternate cluing angle might be computer (CPU) processing speeds.
1/5 one syllable (major) countries. In believe there are only 5, or atleast there are 5 in the puzzle lol.
I didn’t know that about US frequencies, I’ll definitely consider making the change.
Thanks sendhil! And thanks for solving!