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(up)date item size
2003-03-30 Numeric and symbol display tubes (nixie) 777,519 bytes (fr)
2006-02-02 Generator Röhren Tubes for r.f. heating. Thanks to Robert Schmalstieg. 25,148,425 bytes (de)
2006-02-02 Sende Röhren 1976/77 Transmitting Tubes. Thanks to Robert Schmalstieg. 46,839,789 bytes (de)
2006-02-02 Sende Röhren 1980/81 Transmitting Tubes. Thanks to Robert Schmalstieg. 58,897,238 bytes (de)
2006-02-02 Wanderfeld Röhren 1982/83 Travelling Wave Tubes. Thanks to Robert Schmalstieg. 30,532,002 bytes (de)
2011-09-16 Grid-Controlled Tubes or RF-Excited CO, Lasers Thanks to Bernhard Voss. 3,642,474 bytes
2011-09-16 Transmitter and Generator Tubes Thanks to Bernhard Voss. 1,692,132 bytes
2011-09-16 Topfkreise führ Fernsehanwendungen. (Tank circuits for TV applications.) 1980/81. Thanks to Bernhard Voss. 2,710,101 bytes (de)
2011-09-16 Traveling Wave Tube Amplifiers & Backward Wave Oscillators 1986. Thanks to Bernhard Voss. 5,098,307 bytes
2012-07-29 Pocket Book - Contents 1964/65. Thanks to Peter Gerber. 494,299 bytes
2012-07-29 Pocket Book - Tubes (part 1) 1964/65. Thanks to Peter Gerber. 1,462,770 bytes
2012-07-29 Pocket Book - Tubes (part 2) 1964/65. Thanks to Peter Gerber. 14,945,137 bytes
2014-02-08 Siemens Binder Part1 1962. 1,337,225 bytes (de)
2014-02-08 Siemens Binder Part2 1962. 43,292,454 bytes (de)
2019-03-14 Pocketbook 1958-59. 14,347,587 bytes