when did the first transistor radio come out?
Sony, who is often credited with developing the first portable radio, didn't come out with theirs until 1957. Don Pies Regency TR1 Website/via. It didn't take long for transistors to take over and for them to shrink down to integrated circuits to the point where you can now get an entire Radio Shack in an iPhone. It all started 60 years ago with this.