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Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode

GU74B

Transmitting power tetrode designed for RF amplification, linear/SSB service, oscillation, modulation, broadcasting, or frequency multiplication.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / -

Description

The GU-74B tetrode is used in wideband non-tunable and single-sideband amplifier service at frequencies up to 250 MHz. It has an indirectly heated oxide-coated cathode and forced-air-cooled metal-ceramic construction.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
12.6 V
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
4000 V
Max screen voltage
300 V
Max plate dissipation
600 W
Max screen dissipation
15 W
Max grid dissipation
2 W
Max cathode current
2.5 A

Promoted-field audit performed from English ratings/characteristics; detailed electrical values retained in parameter table. REDO promoted-field audit completed from English Limit Operating Values / Electrical Parameters tables.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • anode; / — contact surfaces [1]

    1

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [2]

    1

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [3]

    2

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [4]

    4

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [5]

    6

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [6]

    3

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [7]

    7

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [8]

    5

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • anode; / — contact surfaces [9]

    2

    1-grid 1; 2, 4, 6 - cathode; 3, 7 — heater; 5, C2 — grid 2; A - anode; / — contact surfaces

  • temperature,°C [1]

    392 C

    yCKOpeHUueM, m/c? 392 Ambient temperature,°C .......... ... ... ... —10to +55

  • temperature,°C [2]

    -10 C

    yCKOpeHUueM, m/c? 392 Ambient temperature,°C .......... ... ... ... —10to +55

  • temperature,°C [3]

    55 C

    yCKOpeHUueM, m/c? 392 Ambient temperature,°C .......... ... ... ... —10to +55

  • voltage (ACorDC), V

    12.6 V

    Hanpsi>xeHue Hakana (nepemMeHHoe nnu Heater voltage (ACorDC), V . .................. 12.6

  • voltage [1]

    33 uS

    Tok Hakana, A 3,3-3.9 Mutual conductance (at anode voltage 1,000 V,

  • voltage [2]

    -3.9 uS

    Tok Hakana, A 3,3-3.9 Mutual conductance (at anode voltage 1,000 V,

  • voltage [3]

    1000 uS

    Tok Hakana, A 3,3-3.9 Mutual conductance (at anode voltage 1,000 V,

  • voltage change [1]

    2 V

    KpyTusHa xapakTepucTykiu (Mpy HaNPsXKEHUAX grid 2 voltage 300 V, grid 1 voltage change 2.5V,

  • voltage change [2]

    300 V

    KpyTusHa xapakTepucTykiu (Mpy HaNPsXKEHUAX grid 2 voltage 300 V, grid 1 voltage change 2.5V,

  • voltage change [3]

    1 V

    KpyTusHa xapakTepucTykiu (Mpy HaNPsXKEHUAX grid 2 voltage 300 V, grid 1 voltage change 2.5V,

  • voltage change [4]

    2.5 V

    KpyTusHa xapakTepucTykiu (Mpy HaNPsXKEHUAX grid 2 voltage 300 V, grid 1 voltage change 2.5V,

  • current [1]

    1000 uA

    aHoga 1000 B, sTopoit ceTku 300 B, uameHeHun anode current 600 mA), mA/V .. ... ... L. 26-38

  • current [2]

    300 uA

    aHoga 1000 B, sTopoit ceTku 300 B, uameHeHun anode current 600 mA), mA/V .. ... ... L. 26-38

  • current [3]

    600 uA

    aHoga 1000 B, sTopoit ceTku 300 B, uameHeHun anode current 600 mA), mA/V .. ... ... L. 26-38

  • current [4]

    26 uA

    aHoga 1000 B, sTopoit ceTku 300 B, uameHeHun anode current 600 mA), mA/V .. ... ... L. 26-38

  • current [5]

    -38 uA

    aHoga 1000 B, sTopoit ceTku 300 B, uameHeHun anode current 600 mA), mA/V .. ... ... L. 26-38

  • grid [1]

    25 A

    HanpspkeHus nepeon ceTkn 2,5 B, Toke aHoga Anode current (at anode voltage 250 V, grid 2

  • grid [2]

    250 A

    HanpspkeHus nepeon ceTkn 2,5 B, Toke aHoga Anode current (at anode voltage 250 V, grid 2

  • grid [3]

    2 A

    HanpspkeHus nepeon ceTkn 2,5 B, Toke aHoga Anode current (at anode voltage 250 V, grid 2

  • voltage [1]

    600 V

    600 mA), MA/B 26-38 voltage 300 V), mA, atleast .................... 1,400

  • voltage [2]

    26 V

    600 mA), MA/B 26-38 voltage 300 V), mA, atleast .................... 1,400

  • voltage [3]

    -38 V

    600 mA), MA/B 26-38 voltage 300 V), mA, atleast .................... 1,400

  • voltage [4]

    300 V

    600 mA), MA/B 26-38 voltage 300 V), mA, atleast .................... 1,400

  • voltage [5]

    1400 V

    600 mA), MA/B 26-38 voltage 300 V), mA, atleast .................... 1,400

  • voltage

    250 V

    Tok aHoga (Npu HanpsixxeHwsx aHoga 250 B, sTopown Negative bias voltage (at anode voltage

  • current [1]

    300 mA

    cetku 300 B), MA, He meHee 1400 1,000 V, grid 2 voltage 300 V, anode current

  • current [2]

    1400 mA

    cetku 300 B), MA, He meHee 1400 1,000 V, grid 2 voltage 300 V, anode current

  • current [3]

    1000 mA

    cetku 300 B), MA, He meHee 1400 1,000 V, grid 2 voltage 300 V, anode current

  • current [4]

    2 mA

    cetku 300 B), MA, He meHee 1400 1,000 V, grid 2 voltage 300 V, anode current

  • current [5]

    300 mA

    cetku 300 B), MA, He meHee 1400 1,000 V, grid 2 voltage 300 V, anode current

  • current [1]

    1000 A

    aHopa 1000 B, sTopon ceTkun 300 B, Toke aHoaa 2,500V, grid 2 voltage 300 V, anode current

  • current [2]

    300 A

    aHopa 1000 B, sTopon ceTkun 300 B, Toke aHoaa 2,500V, grid 2 voltage 300 V, anode current

  • current [3]

    2500 A

    aHopa 1000 B, sTopon ceTkun 300 B, Toke aHoaa 2,500V, grid 2 voltage 300 V, anode current

  • current [4]

    2 A

    aHopa 1000 B, sTopon ceTkun 300 B, Toke aHoaa 2,500V, grid 2 voltage 300 V, anode current

  • current [5]

    300 A

    aHopa 1000 B, sTopon ceTkun 300 B, Toke aHoaa 2,500V, grid 2 voltage 300 V, anode current

  • Interelectrode capacitance, pfF

    3 pF

    3anupanns oTpuUaTenbHOE (NMPU HANPSXKEHNUAX Interelectrode capacitance, pfF:

  • input [1]

    2500

    aHoga 2500 B, sTopown ceTku 300 B, Toke aHoAa input ... 46-56

  • input [2]

    300

    aHoga 2500 B, sTopown ceTku 300 B, Toke aHoAa input ... 46-56

  • input [3]

    46

    aHoga 2500 B, sTopown ceTku 300 B, Toke aHoAa input ... 46-56

  • input [4]

    -56

    aHoga 2500 B, sTopown ceTku 300 B, Toke aHoAa input ... 46-56

  • voltage [1]

    46 V

    BXOOHAS .. ... .ot 46-56 Cathode heating time (at heater voltage 12.6 V,

  • voltage [2]

    -56 V

    BXOOHAS .. ... .ot 46-56 Cathode heating time (at heater voltage 12.6 V,

  • voltage [3]

    12.6 V

    BXOOHAS .. ... .ot 46-56 Cathode heating time (at heater voltage 12.6 V,

  • voltage [1]

    9 V

    BBIXOAHAS . . oo otot it e e 9-13 anode voltage 1,000 V, grid 2 voltage 300 V),

  • voltage [2]

    -13 V

    BBIXOAHAS . . oo otot it e e 9-13 anode voltage 1,000 V, grid 2 voltage 300 V),

  • voltage [3]

    1000 V

    BBIXOAHAS . . oo otot it e e 9-13 anode voltage 1,000 V, grid 2 voltage 300 V),

  • voltage [4]

    2 V

    BBIXOAHAS . . oo otot it e e 9-13 anode voltage 1,000 V, grid 2 voltage 300 V),

  • voltage [5]

    300 V

    BBIXOAHAS . . oo otot it e e 9-13 anode voltage 1,000 V, grid 2 voltage 300 V),

  • voltage [1]

    126 V

    Hakana 12,6 B, anoga 1000 B, BTopoi (at anode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [2]

    1000 V

    Hakana 12,6 B, anoga 1000 B, BTopoi (at anode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [3]

    2000 V

    Hakana 12,6 B, anoga 1000 B, BTopoi (at anode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [4]

    2 V

    Hakana 12,6 B, anoga 1000 B, BTopoi (at anode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [5]

    300 V

    Hakana 12,6 B, anoga 1000 B, BTopoi (at anode voltage 2,000 V, grid 2 voltage 300 V,

  • current at most [1]

    150 A

    ... ... ... ... 150 grid 1 voltage —60 V, grid 2 current at most

  • current at most [2]

    1 A

    ... ... ... ... 150 grid 1 voltage —60 V, grid 2 current at most

  • current at most [3]

    -60 A

    ... ... ... ... 150 grid 1 voltage —60 V, grid 2 current at most

  • current at most [4]

    2 A

    ... ... ... ... 150 grid 1 voltage —60 V, grid 2 current at most

  • frequency [1]

    50 MHz

    MoulHOCTb BbIXOAHAR B pexxume knacca AB, 50 mA, frequency 0.1-1.0 MHz), W, least ......... 550

  • frequency [2]

    0.1 MHz

    MoulHOCTb BbIXOAHAR B pexxume knacca AB, 50 mA, frequency 0.1-1.0 MHz), W, least ......... 550

  • frequency [3]

    -1 MHz

    MoulHOCTb BbIXOAHAR B pexxume knacca AB, 50 mA, frequency 0.1-1.0 MHz), W, least ......... 550

  • frequency [4]

    550 MHz

    MoulHOCTb BbIXOAHAR B pexxume knacca AB, 50 mA, frequency 0.1-1.0 MHz), W, least ......... 550

  • voltage [1]

    300 V

    300 B, nepsoit ceTku —60 B, Toke (atanode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [2]

    -60 V

    300 B, nepsoit ceTku —60 B, Toke (atanode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [3]

    2000 V

    300 B, nepsoit ceTku —60 B, Toke (atanode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [4]

    2 V

    300 B, nepsoit ceTku —60 B, Toke (atanode voltage 2,000 V, grid 2 voltage 300 V,

  • voltage [5]

    300 V

    300 B, nepsoit ceTku —60 B, Toke (atanode voltage 2,000 V, grid 2 voltage 300 V,

  • current [1]

    50 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [2]

    4 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [3]

    1 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [4]

    -10 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [5]

    1 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [6]

    -70 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • current [7]

    2 mA

    BTOPOW ceTku He bonee 50 MA, 4actote 0,1-1,0 Ml'L), grid 1 voltage —70 V, grid 2 current

  • power under conditions of class B [1]

    300 W

    BTOpON ceTkn 300 B, nepsoit ceTku —70 B, Output power under conditions of class B

  • power under conditions of class B [2]

    -70 W

    BTOpON ceTkn 300 B, nepsoit ceTku —70 B, Output power under conditions of class B

  • voltage [1]

    6 V

    TOKe BTOpPON ceTku He 6onee 50 mA), nb: (at anode voltage 1,500 V, grid 2 voltage 275 V,

  • voltage [2]

    50 V

    TOKe BTOpPON ceTku He 6onee 50 mA), nb: (at anode voltage 1,500 V, grid 2 voltage 275 V,

  • voltage [3]

    1500 V

    TOKe BTOpPON ceTku He 6onee 50 mA), nb: (at anode voltage 1,500 V, grid 2 voltage 275 V,

  • voltage [4]

    2 V

    TOKe BTOpPON ceTku He 6onee 50 mA), nb: (at anode voltage 1,500 V, grid 2 voltage 275 V,

  • voltage [5]

    275 V

    TOKe BTOpPON ceTku He 6onee 50 mA), nb: (at anode voltage 1,500 V, grid 2 voltage 275 V,

  • current at most [1]

    -28 mA

    TpeTLero nopsaka, Hebonee . . .............. —-28 grid 1 voltage —45 V, grid 2 current at most 60 mA),

  • current at most [2]

    1 mA

    TpeTLero nopsaka, Hebonee . . .............. —-28 grid 1 voltage —45 V, grid 2 current at most 60 mA),

  • current at most [3]

    -45 mA

    TpeTLero nopsaka, Hebonee . . .............. —-28 grid 1 voltage —45 V, grid 2 current at most 60 mA),

  • current at most [4]

    2 mA

    TpeTLero nopsaka, Hebonee . . .............. —-28 grid 1 voltage —45 V, grid 2 current at most 60 mA),

  • current at most [5]

    60 mA

    TpeTLero nopsaka, Hebonee . . .............. —-28 grid 1 voltage —45 V, grid 2 current at most 60 mA),

  • voltage (ACorDC),V [1]

    11.9 V

    HanpsikeHve, B: Heater voltage (ACorDC),V . .................. 11.9-13.3

  • voltage (ACorDC),V [2]

    -13.3 V

    HanpsikeHve, B: Heater voltage (ACorDC),V . .................. 11.9-13.3

  • voltage (DC),V ... ... il [1]

    3 V

    aHoaa (NMMKOBOE 3HAYEHWE) . .. .............. 4000 Grid 2voltage (DC),V ... ... il 300

  • voltage (DC),V ... ... il [2]

    4000 V

    aHoaa (NMMKOBOE 3HAYEHWE) . .. .............. 4000 Grid 2voltage (DC),V ... ... il 300

  • voltage (DC),V ... ... il [3]

    2 V

    aHoaa (NMMKOBOE 3HAYEHWE) . .. .............. 4000 Grid 2voltage (DC),V ... ... il 300

  • voltage (DC),V ... ... il [4]

    300 V

    aHoaa (NMMKOBOE 3HAYEHWE) . .. .............. 4000 Grid 2voltage (DC),V ... ... il 300