I was digging through this old copy of GE Ham News: https://www.americanradiohistory.co.../GE-Ham-News/GE-Ham-News-1951-Vol-06-No-6.pdf (the edition featured tips and tricks, interesting stuff) I noticed the mention of a civil defense movie that featured ham radio and mobile operations. A quick search for the title produced a copy of the movie on YouTube: Gotta love those early 1950s cars.