Interesting site. Just ran across it goofing around. Radios were quite expensive really, considering as a serviceman making about $400 a month, and having a $200 a month car payment. (1976)
Vintage CB radios: Why everybody was talking 'bout 'em in the 1970s - Click Americana
In the '70s, there were millions of people using Vintage CB radios - having a world of conversations and learning about the important reasons to keep citizens' band radio active.
clickamericana.com