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Power - Pentode (NOT beam) ·Pentode

PT15

Marconi RF transmitting pentode for oscillator, power-amplifier, frequency-multiplier, and telephony service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 900 mA

Description

The PT15 is an RF transmitting pentode for oscillator, radio-frequency power-amplifier, frequency-multiplier, and telephony service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
900 mA
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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.028 S
Max plate voltage
1250 V
Max screen voltage
300 V
Max plate dissipation
30 W
Max screen dissipation
10 W

Published maximum ratings and characteristics audited; remaining useful numerical data retained in parameter table.

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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • General. The PT [1]

    15

    General. The PT 15 is a radio-frequency transmitting |« 52:0 DIA.EXT —]

  • General. The PT [2]

    52

    General. The PT 15 is a radio-frequency transmitting |« 52:0 DIA.EXT —]

  • General. The PT [3]

    0

    General. The PT 15 is a radio-frequency transmitting |« 52:0 DIA.EXT —]

  • pentode with an oxide-coated dull emitter filament [1]

    46

    pentode with an oxide-coated dull emitter filament. 46 - 5:0, Al

  • pentode with an oxide-coated dull emitter filament [2]

    5

    pentode with an oxide-coated dull emitter filament. 46 - 5:0, Al

  • pentode with an oxide-coated dull emitter filament [3]

    0

    pentode with an oxide-coated dull emitter filament. 46 - 5:0, Al

  • (

    1 W

    (1) HF POWER AMPLIFIER AND T

  • Rg1 [1]

    2500 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Rg1 [2]

    12500 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Rg1 [3]

    12500 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Rg1 [4]

    20000 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Rg1 [5]

    20000 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Rg1 [6]

    3 W

    Rg12,500 12,500 12,500 20,000 20,000 Q (3) HF POWER AMPLIFIER. CLASS C

  • Veupky [1]

    140

    Veupky 140 150 148 129 132V (Grid modulated, one valve, carrier conditions,

  • Veupky [2]

    150

    Veupky 140 150 148 129 132V (Grid modulated, one valve, carrier conditions,

  • Veupky [3]

    148

    Veupky 140 150 148 129 132V (Grid modulated, one valve, carrier conditions,

  • Veupky [4]

    129

    Veupky 140 150 148 129 132V (Grid modulated, one valve, carrier conditions,

  • Veupky [5]

    132

    Veupky 140 150 148 129 132V (Grid modulated, one valve, carrier conditions,

  • ( [1]

    2 W

    (2) HF POWER AMPLIFIER. CLASS C I 10 m

  • ( [2]

    10 W

    (2) HF POWER AMPLIFIER. CLASS C I 10 m

  • (Anode modulated, one valve, carrier conditions, Ve

    300

    (Anode modulated, one valve, carrier conditions, Ve 300

  • (

    5 W

    (5 HF POWER AMPLIFIER.

  • ( [1]

    4 W

    (4) HF POWER AMPLIFIER modulation 100%,.)

  • ( [2]

    100 W

    (4) HF POWER AMPLIFIER modulation 100%,.)

  • P

    14 V

    P 14 W At shorter wavelengths the anode voltage must be

  • a

    32 V

    a 32 Yo permissible anode voltages against wavelength.