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

RS2014CL

Forced-air-cooled coaxial tetrode for RF, AF, and SSB linear amplification to approximately 110 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 78 A

Description

Coaxial metal-ceramic tetrode for frequencies up to 110 MHz, forced-air-cooled; particularly suitable for use as RF amplifier, AF amplifier and linear amplifier in single-sideband transmitters. Cathode/control grid, screen grid ck/g1g2 ≈ 47 pF Control grid/screen grid, cathode cg1/g2k ≈ 106 pF

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
7.5 V
Nominal heater current
78 A
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
Transconductance
0.021 S
Amplification factor
4.5
Max plate voltage
7500 V
Max screen voltage
1500 V
Max plate dissipation
6000 W
Max screen dissipation
250 W
Max grid dissipation
75 W

Maximum ratings promoted from published rating tables; additional condition-specific values preserved in parameters.

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

1963 Siemens

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

  • Amplification factor

    4.5

  • Transconductance

    21000 µS

  • Amplification factor of screen grid

    4,5

  • Transconductance

    21 mA/V mA/V

  • I A = 0,9

    1,2 A A

Other

  • Heater voltage

    7,5 V V

  • Heater current

    ≈ 78 A A

  • Frequency

    30 60 110 MHz MHz

  • Anode voltage (dc)

    7,5 7,0 6,5 kV kV

  • Screen grid voltage (dc)

    1500 1500 1500 V V

  • Anode current (dc)

    3,0 2,8 2,6 A A

  • Anode dissipation

    5,0 5,0 5,0 kW kW

  • Screen grid dissipation

    250 250 250 W W

  • Control grid dissipation

    75 75 75 W W

  • Frequency

    ≤ 30 ≤ 110 MHz MHz

  • Output power

    16 10 kW 1) kW

  • Anode voltage (dc)

    7,5 6,5 kV kV

  • Screen grid voltage (dc)

    500 750 V V

  • Control grid voltage (dc)

    – 350 – 350 V V

  • Peak control grid voltage (ac)

    590 430 V V

  • Anode current (dc)

    2,8 2,3 A A

  • Screen grid current (dc)

    0,50 0,20 A A

  • Control grid current (dc)

    0,25 0,05 A A

  • Anode input power

    21 15 kW A

  • Drive power

    150 25 W 1) W

  • Anode dissipation

    5,0 5,0 kW kW

  • Efficiency

    77 67 %

  • Transmitter Tetrode

    2014 CL

  • Frequency

    30 MHz MHz

  • Anode voltage (dc)

    5,5 kV kV

  • Screen grid voltage (dc)

    1000 V V

  • Anode current (dc)

    2,5 A A

  • Anode dissipation

    6,0 kW kW

  • Screen grid dissipation

    250 W W

  • Control grid dissipation

    75 W W

  • Frequency

    ≤ 30 MHz MHz

  • Carrier power

    5,8 kW 1) kW

  • Anode voltage (dc)

    5,0 kV kV

  • Screen grid voltage (dc)

    500 V V

  • Control grid voltage (dc)

    – 400 V V

  • Peak control grid voltage (ac)

    520 V V

  • Anode current (dc)

    1,4 A A

  • Screen grid current (dc)

    0,26 A A

  • Control grid current (dc)

    0,05 A A

  • Drive power

    25 W 1) W

  • Anode dissipation

    1,1 kW 2) kW

  • Modulation factor

    100 %

  • Peak screen grid voltage (ac)

    450 V V

  • Anode dissipation during modulation

    1,7 kW kW

  • the anode dissipation increases

    1,5 times the power dissipation stated for the carrier value.

  • Transmitter Tetrode

    2014 CL

  • Anode voltage (dc)

    7,5 kV kV

  • Screen grid voltage (dc)

    1500 V V

  • Anode current (dc)

    4,0 A A

  • Anode dissipation

    6,0 kW kW

  • Screen grid dissipation

    250 W W

  • Control grid dissipation

    75 W W

  • Output power

    11,5 13,5 17 17,5 kW kW

  • Anode voltage (dc)

    4,0 5,0 6,0 7,0 kV kV

  • Screen grid voltage (dc)

    1250 1250 1250 1250 V V

  • Control grid voltage (dc)

    – 270 – 280 – 310 – 325 V V

  • between

    2 tubes Ugg m 500 480 540 470 V V

  • Anode current (dc)

    2 × 2,55 2 × 2,20 2 × 2,10 2 × 1,80 A A

  • Zero signal anode current (dc)

    2 × 0,75 2 × 0,50 2 × 0,41 2 × 0,35 A A

  • Screen grid current (dc)

    2 × 0,17 2 × 0,16 2 × 0,15 2 × 0,12 A A

  • Anode dissipation

    2 × 4,20 2 × 4,20 2 × 4,20 2 × 4,20 kW kW

  • Effective load resistance

    1500 2370 2940 4100 Ω Ω

  • Transmitter Tetrode

    2014 CL

  • The temperature of the ceramic-metal parts must not

    250 °C at any point.

  • The cooling air diagram is valid for frequencies

    30 MHz at an air inlet temperature of 25 °C MHz

  • and a normal air pressure

    1 bar. The cooling air on the anode radiator must be supplied via the a

Capacitance

  • Cathode/control grid, screen grid ck/g1g2

    ≈ 47 pF pF

  • Control grid/screen grid, cathode cg1/g2k

    ≈ 106 pF pF

  • Anode/cathode

    ≈ 0,14 pF 1) pF

  • Anode/control grid

    ≈ 0,75 pF 1) pF

  • Anode/screen grid, cathode ca/g2k

    ≈ 18 pF pF

  • Anode/control grid, screen grid, cathode ca/g1g2k

    ≈ 18 pF pF

  • Transmitter Tetrode

    2014 CL

Cooling

  • Transmitter Tetrode

    2014 CL

  • Transmitter Tetrode

    2014 CL