Akela, my female German Shepherd Dog, shown here at 10 months old. This is Brutus, my black Alsatian who sadly passed away at the age of 10. He lived in South Africa in a city by the sea, which was ironic since he hated water. He was a wonderful, intelligent and kind friend who will be sorely missed.
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.
If it's not working it still is a valuable display item to a collector and a $75 to $80 selling price is not uncommon. In the early 1950s the transistor appeared. One of the first transistors available to exterminators and hobbyist over the counter was the Raytheon CK722.ubes for musicians and audiophiles. There is a large market today for newer tubes used in vintage music amplifiers and vintage tube stereo equipment. Sought after by Audiophiles, these include the common U.S. made 6L6 ($15-$25) and 12AX7 ($8-$15).