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Philips Röhre B105

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Forum » Valves / tubes - Semiconductors » VALVES/TUBES / SEMICONDUCTORS in RADIOMUSEUM » Philips Röhre B105
           
Wolfram Zylka
Wolfram Zylka
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30.Mar.07 13:40

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Zeitbestimmung!

Ist die hier gezeigte Röhrenschachtel aus den 20er oder frühen 30er Jahren?

Freue mich auf eine Antwort von den Röhren Experten

Gruß

Wolfram Zylka

This article was edited 30.Mar.07 23:01 by Wolfram Zylka .

Roy Johnson
 
 
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30.Mar.07 21:49

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Lieber Wolfram,

Ja 20er oder frühen 30er Jahren!

The earliest is 1925 and the latest production advertisement that I can find is 1931.   

These low voltage tubes were not used in many radios, of course.

Best regards,

Roy

Wolfram Zylka
Wolfram Zylka
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30.Mar.07 22:53

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Dear Roy,

Thanks a lot for your friendly answer.

Best regards

Wolfram

  
rmXorg