> The earliest I have seen so far is a > Sherwood FM tuner ca. 1977 that uses an RCA 1802 (e.g. > http://atlanta.craigslist.org/ele/927622156.html). Bit of trivia. That tuner was designed and built in Milwaukee by a company that a friend of mine worked for. At the time, several of his friends built units up from leftovers from the production run.