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NOTE: the website is currently near its capacity limit. Some operations (uploads, downloads) may be intermittently unavailable while I work on the problem. Please be patient, hopefully this will be fixed soon (March 16, 2024).

Update February 23, 2025: My ISP regularly makes changes to the setup of this VPS, which causes some parts of the entirety of the manuals pages to break, as it did for the last week or two.

I apologize for that. At the moment, it is repaired... Hold your breath.

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Current Directory: /09 Components Specs Datasheets/Databooks from Sphere/Vacuum Tubes
Click on a File to download or a Directory to open	File Type	File Size
===> Back One Level <===
AMERICAN SUBSTITUTES FOR FO	PDF	240K
AMPEREX 1958	PDF	744K
AMPERITE BALLASTS	PDF	860K
BRIMAR TUBES 196X PARTIAL	PDF	21M
BURROGHS NIXIE TUBE CATALOG	PDF	15M
EIMAC1951CAREANDFEEDINGOFPO	PDF	2.9M
FOREIGN SUBSTITUTES FOR AME	PDF	180K
GE ESSENTIAL CHARACTERISTIC	PDF	11M
GE NEON LAMPS 1965	PDF	78M
MULLARDBOOK2PART1VALVESMAY1	PDF	14M
MULLARDBOOK2PART2VALVESNOV1	PDF	15M
MULLARDBOOK2PART3VALVESJAN1	PDF	11M
MULLARDBOOK2PART5VALVESDEC1	PDF	14M
PHILIPS TUBES PART 4 1972	PDF	18M
RAYTHEON AMATEUR 1938	PDF	12M
RAYTHEON TUBES 196X	PDF	8.2M
RCARECEIVINGTUBEMANUAL1970	PDF	31M
RCA AMATEU 1934	PDF	1.3M
RCA INTERCHANGE 1960	PDF	5.1M
RCA PHOTOTUBES 1941	PDF	3.2M
RCA RADIO DESIGNERS HANDBOO	PDF	78M
RCA RC 20 1960	PDF	20M
RCA RC 24 1965	PDF	24M
RCA RC 30 1975	PDF	38M
RCA TT 3 1938	PDF	8.5M
RCA TT 4 1956	PDF	14M
RCA TT 5 1962	PDF	215M
SYLVANIA TUBES 1959	PDF	24M
THEORY APPLICATION TUBESTM1	PDF	17M
TUBESUBSTITUTIONHANDBOOKV1	PDF	32M
TUBES CROSS REF MIL HDBK 21	PDF	17M
TUBE NUMBERING SYSTEMS	PDF	156K
WESTERN ELECTRIC TUBES 1956	PDF	3.5M