Electronic vacuum tube device not valve for identification
? Electronic vacuum tube device not valve for identification
Electronic device housed in a vacuum tube but not a valve. Could it be a crystal for frequency setting?
No pins on the base just a single screw connection at base and the two wires coming out from the top.
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yes, it''s a crystal
Mr Cooke,
you're right. It's a quartz crystal. The frequency is given to be 144 kc/s (kHz). The type is CR1902/59.
Crystals were often enclosed in evacuated glass vessels, to achieve long term stability. I've seen a similar unit inside a quartz clock, but it could also have been used in all kinds of rf oscillator or filter circuits.
You are not showing the base, or whatever is on the other end of the tube. Does the bakelite hold any pins or mounting arrangements that would fit a socket, or just a single screw?
Yours,
Nikolaus Loewe
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yes, it''''s a crystal
Thank you Mr Loewe,
Attaced is a picture of the base. It has only a single screw with a nut. Is this only for mounting or does it have an internal conection, perhaps an earthing point?
Ken
Attachments:- Base (55 KB)
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