6SN7 (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "6SN7" in Russian language version.

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computer-museum.ru

duncanamps.com

tdsl.duncanamps.com

effectrode.com

enjoythemusic.com

ineum.ru

keith-snook.info

pocnet.net

frank.pocnet.net

  • Brimar receiving tube 12AU7 ECC82 : [арх. 30 декабря 2016]. — Footrscray, Kent, England : Standard Telephone and Cables Limited, 1952. — № Application Report VAD/513.4. — P. 8.

r-type.org

radiostation.ru

web.archive.org