Tubes are not so unreliable


While getting my hair cut, I remarked to my barber about his Zenith table radio. It featured FM, but seemed to be of mid-60's vintage. He confirmed that he probably bought it in 1965 or 1966. When I told him it must be tubed, he said it was. He has played it every day the barbershop has been open since the radio was purchased. I asked him how often he has had to replace a tube. The answer was, "Never, I have never touched anything inside of it." He didn't know how many or what types of tubes the radio used. His sentiment was that if a tube ever goes, he will have to retire it(but not get rid of it). That's when I told him to tell me if that ever happens. I will hook him up with the tubes. That was when Zenith was Zenith. Before the dark days; how they went from being the best to the worst. The radio was bought for the princely sum of $85. I wonder how much that would be in today's money. Enough to buy the WaveRadio I am sure. Now, who would ever suggest that someone buying the Bose would ever get 35 years of use out of it? I guess tubes are not so unreliable after all. So, for anyone who worries about buying tube equipment, you might want to think about this story
trelja
Great story. I think this also speaks to the quality and staying power of tubes that were made when they were the mainstay of electronics. I have always felt that my NOS tubes have been more durable and longer lived that the new stuff. It would seem that some of those higher priced NOS pieces are actually a bargain in the long run.
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Power output tubes in RF gear take a beating. As such, one of my fellow "techs" uses a tube radio on his bench to test all of his repairs. The original tubes in the output section have been used on a daily basis since 1968 up until appr 2 years ago. He finally decided to change the output tubes. After all of those years of use and running at full output on a daily basis ( 7 days a week ) and having the tube run into amplifiers that had damaged input circuitry, the power output level was down only 22% as compared to a brand new tube of the same vintage. I don't know of ANY type of SS component that could lay claim to ANYTHING like that. Sean
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