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Originally Posted by Jim
A length of tube makes a great circuit. I guess the same could be said for sea shells.
Some calculator signal tests would be nice, kinda surprised you didn't do any with the first Examiner.
Later, Jim
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Tubes are only used for resonant cavities in a very few electronic circuits that are not generally related to passive receivers. Tubes are more commonly used in acoustic applications such as pipe organs, xylophones, shotgun microphones and other acoustic applications where a sound frequency is to be boosted by a resonating tube. It is amazing people will post technical BS in a technical forum such as tubes and sea shells making a great circuit. It brings to mind the quality of teachings from the famous post where we were told that gold DNA produces a substance that coats the metal to fight rust and oxidation.
Actually I did make some tests on the calculator with the first Examiner. When the new Examiner arrives, I will put it and the calculator on the scope to see what signals are there.
Best wishes,
J_P