I have tried to get off my "high-horse" but I keep stepping in horse cr*p like EFJ.......
Time line - I am thinking mid 1980's to early 1990's, our county school system added radios to their fleet of school buses. E.F. Johnson, and they litterly.....If i recall correctly, was the lowest bidder, From a county predominately Motorola, with Kenwood a very - very close second.
E.F. Johnson radios......from what I witnessed, were junk. The cases were grey colored and cheap, like some kind of bendable plastic.
Audio was troublesome. And you could not talk very well with them.
FF - Medic !!!