Summary
The F209A is a low mu general purpose triode. It is equivalent to the American UY-227.
Philips released the F209A as a replacement for the American UY-227 in 1928 but changed its name to PH227 in about 1930.
Manufactured by: Philips, Holland.
It has a 2.5 volt indirectly heated cathode. Anode voltage is 250 V and amp[lification factor is 9.1.
Physical Description
Conical glass bulb on 5 pin American (UY) base..
More Information
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Collection Names
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Acquisition Information
Donation from Telesonics Pty Ltd, 09 Nov 1971
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Manufacturer
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Inscriptions
Bulb: PHILIPS/F209(illegible)/MINIWATT/2,5V/250V/MADE IN HOLLAND/(iv)
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Classification
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Type of item
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Overall Dimensions
112 mm (Length), 44 mm (Outside Diameter)
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