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Late 1970s production

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In Reply to: RE: Mystery 12AU7 = RFT posted by Thermionic27609 on July 01, 2009 at 14:05:58

HP did not make tubes.

These would be late 1970s-early 1980s RFT E. German production. Similar to these in the link below:

RFT ECC82 Single Support Halo - East Germany (Open in New Window)

Follow Ups:

RE: Late 1970s production - Thermionic27609 22:17:18 07/02/09 (1)
CV4109,

What I meant was: was HP producing anything that used vacuum tubes in the late 1970s? Or were they simply supplying HP branded tubes as replacement parts?

David
- RE: Late 1970s production - CV4109 16:59:03 07/03/09 (0)
  Perhaps some RF/Microwave/Instrumentation gear using tubes was still being made in late 1970s by HP but not totally sure. Since tube based instruments like scopes, signal generators etc. were in use through 1980s in labs across the country, there was a lot of service components in the distribution channel.
  
  Tubes were still being made until mid-1980s by companies like Tungsram, RFT, BEL India etc.

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