The image in the banner above is taken from the wonderful website WorldRadioHistory.com and the January 1940 issue of the Proceedings of the Institute of Radio Engineers.
A few years ago, I came across my birth certificate, and was surprised to see two things. First, the place of birth is listed, not as the major city I had used when filling out every government form in my life, but, instead, the suburb the family lived in. I assume the hospital was, indeed, in the major city. Second, my father's occupation is entered as "Radio Engineer". This makes sense. He was, in fact, a transmitter engineer for the local CBS-owned radio station. But it surprised me, in that I had always heard say he was an "Electrical Engineer." In college, the university offered two tracks in electrical engineering. He chose "Radio", while his best friend chose "Power".
I suppose the official title of Radio Engineer could be said to occupy the years from 1912 to 1963, the span of the Institute of Radio Engineers. When I was still in elementary school, the organization merged with the American Institute of Electrical Engineers, forming the Institute of Electrical and Electronics Engineers.
See the interesting 1963 article, Evolution of the IEEE Logo here .
My employer was kind to buy business cards for any of us who thought we needed them. One day we were told they would no longer accept our title as "Engineer" unless we were registered by the State as a licensed Professional Engineer. Very few of us were, so we gave ourselves various euphemism titles.
I suppose if I were to order business cards today, I might use:
"W5EEG, MSEE, IEEE Life Member"
The IRE Directory of 1959 ( here ) lists recipients of an award known as the Morris Liebmann Memorial Prize. It is quite a pantheon of Radio History.