Division AB: Transmission Engineering and Data

Section Date Issue Size Title
AB22.401.11953-09-011285.08 KBDetection, Location and Correction of Impedance Irregularities in Loaded Exchange Type Cables - General Considerations
AB25.1761954-06-01118.59 MBContractual and Coordination Considerations in Connection With Use of Power Line Carrier On Rural Electrification Administration Lines
AB43.910-3PT XA1950-07-01A640.60 KB500-Type Set Loop Design - Zone 5A Outer Boundary Limits - SxS, Crossbar and CX Dial, #12 Manual 48-Volt Exchanges
AB46.0241939-11-012266.82 KB101F Vacuum Tube (Dome) - Low-power, Filamentary Triode
AB46.0251939-11-011241.49 KB101FA Vacuum Tube - Low-power, Filamentary Triode
AB46.0301936-09-011285.41 KB101J Vacuum Tube - Low-power, Filamentary Triode
AB46.0311941-07-011252.93 KB101D Vacuum Tube (Dome) - Low-Power, Filamentary Triode
AB46.0351941-04-011259.02 KB104D Vacuum Tube (Dome) - Filamentary, Power Amplifier Triode
AB46.0522277.30 KB102F Vacuum Tube (Dome) - Filamentary, Voltage Amplifier Triode
AB46.0901936-09-011453.67 KB205D Vacuum Tube - Moderate Power, Filamentary Triode
AB46.0911936-09-011464.00 KB205E Vacuum Tube - Moderate Power, Filamentary Triode
AB46.101L1950-01-011185.96 KB101L Triode - Audio-Frequency Amplifier
AB46.101M1950-01-011201.31 KB101M Triode - Audio-Frequency Amplifer
AB46.102D1950-01-011200.22 KB102D Triode - Audio-Frequency Amplifier
AB46.102L1950-01-011198.49 KB102L Triode - Audio-Freuquency Amplifier
AB46.1251936-09-011300.17 KB215A Vacuum Tube - Small, Filamentary Triode
AB46.1701936-09-011276.77 KB231D Vacuum Tube - Small, Filamentary Triode
AB46.1751941-08-011204.76 KB233B Vacuum Tube - Half Wave, High Voltage, Water-cooled Rectifier
AB46.205F1950-01-011208.30 KB205F Triode - Power Amplifier
AB46.212E1995-01-011371.37 KB212E Vacuum Tube
AB46.2351936-09-011349.80 KB244A Vacuum Tube - Low-power Triode with Indirectly Heated Cathode
AB46.242C1948-11-011284.04 KB242C Triode - Amplifier, Oscillator or Modulator
AB46.247A1948-04-011269.95 KB247A Triode - Audio-Frequency Amplifier
AB46.249B1952-05-01188.16 KB249B Electron Tube - Mercury-vapor Diode
AB46.249C1952-05-01189.60 KB249C Electron Tube - Mercury-vapor Diode
AB46.253A1963-04-012105.90 KB253A Rectifier - Half-wave, Mercury-vapor
AB46.258B1963-04-01289.80 KB258B Electron Tube - Mercury-vapor Diode
AB46.259A1948-08-011356.20 KB259A Tetrode - Indirectly Heated Cathode
AB46.262B1948-04-011320.17 KB262B Triode - Audio-Frequency Amplifier
AB46.264C1950-09-011177.80 KB264C Triode - Audio-Frequency Amplifier
AB46.266B1948-08-011158.72 KB266B Rectifier - Half-wave, Mercury-vapor
AB46.266C1948-08-011165.13 KB266C Rectifier - Half-wave, Mercury-vapor
AB46.268A1936-01-011231.54 KB268A Vacuum Tube - Filamentary Air-cooled Triode
AB46.271A1948-08-011267.51 KB271A Triode - Power Amplifier
AB46.272A1950-10-011179.12 KB272A Triode - Low Power Amplifier
AB46.274A1948-08-011158.70 KB274A Rectifier - Full-wave, High Vacuum
AB46.274B1948-08-011180.16 KB274B Rectifier - Full-wave, High Vacuum
AB46.284D1949-02-011248.33 KB284D Triode - Amplifier, Osciallator or Modulator
AB46.287A1962-10-013143.87 KB287A Electron Tube - Three-electrode Mercury-vapor Thyratron
AB46.293A1950-09-011234.41 KB293A Pentode - Power Amplifier
AB46.297A1962-10-011172.00 KB297A Vacuum Tube - Three Element, Argon Filled, Filamentary Thyratron
AB46.300B1950-01-011242.79 KB300B Triode - Power Amplifier
AB46.301A1963-04-011195.87 KB301A Vacuum Tube - Full Wave, Thermionic, Mercury Vapor Rectifer
AB46.3051936-09-011286.94 KB257A Vacuum Tube - Small, Filamentary Triode
AB46.308B1936-01-011249.44 KB308B Vacuum Tube - Filamentary Air-cooled Triode
AB46.310A1956-02-012230.18 KB310A Electron Tube - Indirectly Heated Cathode Type
AB46.310B1956-02-012219.30 KB310B Electron Tube - Indirectly Heated Cathode Type
AB46.311A1948-12-011291.03 KB311A Pentode - Supressor Grid Power Pentode, Indirectly Heated Cathode
AB46.311B1960-10-011194.54 KB311B Electron Tube - Supressor Grid Power Pentode, Indirectly Heated Cathode
AB46.313C1962-01-013175.08 KB313C Electron Tube - Three-electrode, Inert-gas Filled, Cold Cathode Tube
AB46.313CA1962-01-013168.34 KB313CA Electron Tube - Three-electrode, Inert-gas Filled, Cold Cathode Tube
AB46.313CB1962-01-013165.42 KB313CB Electron Tube - Three-electrode, Inert-gas Filled, Cold Cathode Tube
AB46.313CC1962-01-013169.15 KB313CC Electron Tube - Three-electrode, Inert-gas Filled, Cold Cathode Tube
AB46.315A1948-04-011158.84 KB315A Rectifier - Half-wave, Mercury-vapor
AB46.323B1962-10-012157.56 KB323B Electron Tube - Three-electrode, Mercury-vapor and Gas-filled Thyratron
AB46.328A1956-02-011227.14 KB328A Electron Tube - Indirectly Heated Cathode Type Pentode Having a Separate Suppressor Grid Connection
AB46.333A1950-09-011155.04 KB333A Cold Cathode - Three-electrode, Inter-gas Filled, Cold Cathode Tube
AB46.3351936-09-011372.61 KB262A Vacuum Tube - Low-power Triode with Indirectly-heated Cathode
AB46.336A1948-11-011354.27 KB336A Pentode - Suppressor Grid, Power Pentode with Indirectly Heated Cathode
AB46.337A1951-04-011197.89 KB337A Electron Tube - Variable-mu Pentode of the Unipotential Cathode Type
AB46.338A1962-10-011171.21 KB338A Vacuum Tube - Three Element, Argon Filled, Thyratron, with Indirectly Heated Cathode
AB46.345A1948-08-011163.19 KB345A Rectifier - Full-wave, High Vacuum
AB46.346B1956-04-013187.26 KB346B Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.346C1962-01-011172.42 KB346C Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.347A1948-08-011281.22 KB347A Triode - Audio-Frequency Amplifier
AB46.348A1956-02-012222.35 KB348A Electron Tube - Indirectly Heated Cathode Type Pentode Having a Separate Suppressor Grid
AB46.349A1948-11-011330.98 KB349A Pentode - Suppressor Grid, Power Pentode with Indirectly Heated Cathode
AB46.350B1950-01-011335.08 KB350B Tetrode - Beam Power Amplifier
AB46.351A1948-08-011189.15 KB351A Rectifier - Full-wave, High Vacuum
AB46.353A1962-01-014163.56 KB353A Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.354A1962-10-013143.45 KB354A Electron Tube - Three-electrode, Mercury-vapor Thyratron
AB46.355A1962-10-012144.79 KB355A Electron Tube - Three-electrode, Mercury-vapor and Gas-filled Thyratron
AB46.357B1950-01-011284.77 KB357B Triode - Amplifier, Oscillator or Modulator
AB46.358A1962-02-011121.18 KB358A Electron Tube - Two-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.359A1962-06-013173.08 KB359A Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.372A1950-09-011134.49 KB372A Cold Cathode - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.373A1950-05-011167.54 KB373A Pentode - Filamentary Type Suppressor Grid Pentode
AB46.374A1950-05-011289.00 KB374A Pentode - Filamentary Type Suppressor Grid Pentode
AB46.375A1950-05-011245.38 KB375A Pentode - Beam Power Pentode of the Heater Cathode Type
AB46.376B1956-04-014169.63 KB376B Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.376C1962-01-011159.71 KB376C Electron Tube - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.393A1962-10-012159.30 KB393A Electron Tube - Three-electrode, Mercury-vapor and Gas-filled Thyratron
AB46.394A1962-10-012146.26 KB394A Electron Tube - Three-electrode, Mercury-vapor and Gas-filled Thyratron
AB46.395A1962-02-012164.04 KB395A Electron Tube - Ruggedized Three-electrode Inert-gas-filled Cold Cathode Tube
AB46.396A1954-11-012193.81 KB396A Electron Tube - 2C51 9-pin Miniature Double Triode Having Separate Indirectly Heated Cathodes
AB46.398A1948-05-01139.70 KB398A Electron Tube - 5603 Filamentary Power Pentode Amplifier
AB46.400A1948-05-01144.33 KB400A Electron Tube - Miniature Pentagrid Converter
AB46.401A1948-08-012168.11 KB401A Pentode - 5590 7-pin Miniature Pentode Having an Indirectly Heated Cathode
AB46.403A1950-09-012166.35 KB403A Pentode - 6AK5 7-pin Miniature Pentode Having an Indirectly Heated Cathode
AB46.403B1962-09-013189.74 KB403B Electron Tube - 7-pin Miniature Pentode Having an Indirectly Heated Cathode
AB46.404A1955-11-012194.49 KB404A Electron Tube - Indirectly Heated Cathode Type Miniature Pentode
AB46.405A1950-01-012121.33 KB405A Cold Cathode - Three-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.407A1962-09-013177.16 KB407A Electron Tube - 9-pin Miniature Double Triode With Separate Indirectly Heated Cathodes
AB46.408A1953-12-013225.84 KB408A Electron Tube - 6028 7-pin Miniature Pentode Having an Indirectly Heated Cathode
AB46.409A1948-05-011164.61 KB409A Electron Tube - 6AS6 7-pin Miniature, Triple-grid Pentode With an Indirectly Heated Cathode
AB46.410A1962-10-013164.65 KB410A Electron Tube - Three-electrode Mercury-vapor Thyratron
AB46.411A1949-01-01172.09 KB411A Electron Tube - Four-electrode, Inert-gas-filled, Cold Cathode Tube
AB46.412A1949-01-01139.86 KB412A Electron Tube - Miniature Full-Wave Rectifier
AB46.413A1956-04-012156.44 KB413A Electron Tube - Two-electrode Inert-gas-filled Cold Cathode Tube, High Current
AB46.413B1962-01-011140.79 KB413B Electron Tube - Two-electrode Inert-gas-filled Cold Cathode Tube, High Current
AB46.414A1949-05-011122.31 KB414A Electron Tube - Miniature Pentode With an Indirectly Heated Cathode
AB46.415A1949-04-011167.47 KB415A Electron Tube - Miniature Suppressor-Grid Pentode
AB46.416A1949-06-01191.46 KB416A Electron Tube - Disc-seal Planar Type Triode
AB46.416B1953-05-01194.63 KB416B Electron Tube - 6280 Planar Type Triode
AB46.417A1962-09-013148.91 KB417A Electron Tube - 9-pin Miniature Triode with an Indiretly Heated Cathode
AB46.418A1956-04-011165.54 KB418A Electron Tube - Indirectly Heated Cathode Type Tetrode
AB46.420A1962-06-012204.21 KB420A Electron Tube - Double-triode Having Separate Indirectly Heated Cathodes
AB46.421A1953-10-012134.12 KB421A Electron Tube - 5998 Double Triode Having Separate Indirectly Heated Cathodes
AB46.422A1952-10-012164.08 KB422A Electron Tube - Double Diode with Indirectly Heated Cathodes
AB46.423A1952-12-013100.95 KB423A Electron Tube - 6140 Two-electrode Inert-gas Filled Cold Cathode Tube
AB46.423C1962-12-011160.67 KB423C Electron Tube - Two-electrode Inert-gas Filled Cold Cathode Tube
AB46.425A1962-06-014202.31 KB425A Electron Tube - Four-electrode, Inert-gas Filled Cold Cathode Tube
AB46.426A1962-01-014175.30 KB426A Electron Tube - Three-electrode Inert-gas-filled Miniature Cold Cathode Tube
AB46.427A1962-10-013188.39 KB427A Electron Tube - Three-electrode Inert-gas-filled Miniature Cold Cathode Tube
AB46.429A1961-02-013188.35 KB429A Electron Tube - Beam Pentode of the Indirectly Heated Cathode Type
AB46.430A1956-04-012200.39 KB430A Electron Tube - Three-electrode Inert-gas-filled, Cold Cathode Tube
AB46.430B1962-01-011197.18 KB430B Electron Tube - Three-electrode Inert-gas-filled, Cold Cathode Tube
AB46.432A1950-10-01182.20 KB432A Electron Tube - Three-electrode Inert-gas Filled Cold Cathode Tube
AB46.432B1956-12-012149.18 KB432B Electron Tube - Three-electrode Inert-gas Filled Cold Cathode Tube
AB46.435A1954-06-012187.66 KB435A Electron Tube - High Figure of Merit Miniature Tetrode with an Indirectly Heated Cathode
AB46.436A1963-05-012197.03 KB436A Electron Tube - High Figure of Merit Miniature Tetrode with an Indirectly Heated Cathode
AB46.437A1955-10-011169.98 KB437A Electron Tube - High Figure of Merit Triode with an Indirectly Heated Cathode
AB46.440A1962-01-011200.04 KB440A Electron Tube - Filamentary Triode, Low-Power Amplifier
AB46.441A1962-01-011204.80 KB441A Electron Tube - Filamentary Triode, Voltage Amplifier
AB46.442A1962-03-011206.96 KB442A Electron Tube - Filamentary Triode, Power Amplifier
AB46.443A1962-01-012187.20 KB443A Electron Tube - Three-electrode Inert-gas Filled Miniature Cold Cathode Tube
AB46.444A1960-08-011260.70 KB444A Electron Tube - Medium Power Helix-type Traveling Wave Amplifier
AB46.446A1963-06-011147.64 KB446A Electron Tube - Three-electrode Inert-gas Filled Cold Cathode Tube
AB46.447A1963-06-011124.24 KB447A Electron Tube - Two-electrode Inert-gas Filled Cold Cathode Tube
AB46.448A1961-09-011163.35 KB448A, 448B, 454A Electron Tube - High Figure of Merit Tetrodes of the Indirectly Heated Cathode Type
AB46.451A1962-08-011189.52 KB451A Electron Tube - Four-electrode, Inert-gas Filled Cold Cathode Tube
AB46.453A1963-06-011159.77 KB453A Electron Tube - Two-electrode, Inert-gas Filled Cold Cathode Tube
AB46.5401937-01-011198.09 KB301A Vacuum Tube - Full Wave, Thermionic, Mercury Vapor Rectifer
AB46.5851939-08-011349.08 KB311A and 329A Vacuum Tubes - Low-power, Suppressor-grid Pentodes with Indirectly Heated Cathodes
AB46.5951936-09-011204.81 KB313A Vacuum Tube - Double Gap, Cold Cathode, Gas-Filled Tube
AB46.6071939-10-011364.61 KB352A Vacuum Tube - Duodiode Triode with Indirectly Heated Cathode
AB46.61671952-06-011156.37 KB6167 Electron Tube - Ten-stage Cold-cathode Gas-discharge Stepping Tube
AB46.6341938-02-011103.29 KB327A Vacuum Tube - Halve-wave, Tungsten Filament, Argon Filled Rectifier
AB46.6361937-04-011372.72 KB328A Vacuum Tube - Voltage-amplifier, Suppressor-grid Pentode with Indirectly Heated Cathode
AB46.6401941-08-011383.91 KB384A and 385A Vacuum Tubes - Voltage Amplifier, Suppressor-grid Pentodes with Indirectly Heated Cathodes
AB47.0061954-05-0113.68 MBBell System Transmission Transformers
AB47.0061958-03-0126.54 MBBell System Transmission Transformers
AB47.0071956-03-0111.82 MBBell System Capacitors
AB84.1281934-06-01127.79 MBDescription of 14-Type Tape Printers and Associated Apparatus
AB84.1381941-11-0114.10 MBDescription of Operation of No. 14 and No. 20 Transmitter Distributors
AB84.1391941-11-01116.57 MBDescription of Operation of No. 15 Teletypewriter
AB84.1401941-11-0115.44 MBDescription of Operation of No. 15-Type Perforator Transmitter
AB84.1411941-11-01114.35 MBDescription of Operation of No. 26 Teletyprewriter
AB84.1431942-04-01111.22 MBDescription of Operation of Typing Reperforator
AB85.025LL A1961-01-01B2.49 MBEngineering and Operating Considerations Involved in Furnishing Circuits to Western Union Telegraph Company Under Special Contract
AB95.1011938-08-0113.76 MBEducational Training Material - Telegraph - Lecture 1 - General