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radio tube
noun
- a vacuum tube used in a radio receiving set.
Example Sentences
“Now,” said Jack, “is the time that I wish I had my 20-kilowatt radio tube that I have been working on so long.”
Mainspring of the device is a newly-developed radio tube capable of generating for practical use an ultra-high frequency wave of 500 megacycles that is not affected by static conditions, has a cork-centre bounce, has a frequency that can be measured at distances as low as 50 feet off the ground.
His incisive understanding of their experiments with a new radio tube left them speechless, unable to believe that he had quit school when he was 13.
The tube is completely sealed-off, like an ordinary radio tube, needs no pumping to maintain the high vacuum.
With this inventor's audion radio tube, the babble of formerly isolated voices, for good or evil . . . has been propelled to the farthest corners of the earth .
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