Ah, not so much questioning the graven-in-stone tablets of Radio Mission Completion Guide, just confirming that it's advisable to finish all of them before completing a sector, because it's difficult to know which ones you've missed and it's a pain to run around in each sector after the game, waiting for a radio mission to appear, maybe in the sector you're in, maybe not. Plus there's no place where the per-area radio missions are counted in Statistics, IIRC.
I'm just getting my ass handed to me on this one mission, and I want to go back to it later. The one that's killing my logic circuits is the mission that always spawns when I'm in Dust, but requires me in the Badlands. Maybe it's a Badlands mission. Two or three tanks in a convoy, plus the std. EDF jeeps. It's killed me several times, mainly because either (a) my Arc Welder shoots for about 0.5 seconds before deciding to mysteriously require reloading, or (b) the tanks just freakin' TAKE OFF down the road and split leaving me monkeying around with the EDF transports, which ends with the convoy reaching the base. So frustrating.
