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RK75

Raytheon transmitting pentode intended for RF oscillator-amplifier service. Manufacturer documentation provides transmitting maximum ratings and capacitances for radio-frequency power generation and amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: MEDIUM5
Base pins: 5
Nominal heater: 5.5 V / 1 A

Description

RK75 is a Raytheon pentode intended for r-f oscillator-amp., with published transmitting-service maximum ratings and capacitances.

Socket description

Medium 5-contact transmitting-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: MEDIUM5
Base pins: 5
Nominal heater voltage: 5.5 V
Nominal heater current: 1 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

Pentode

X-ray radiationInterelectrode capacitances

Max plate voltage: 500 V
Max screen voltage: 250 V
Max plate dissipation: 15 W

Published transmitting-tube maximum voltages/currents, power ratings and capacitances; R-F Oscillator-Amp..

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

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Filament/heater voltage
5.5 V
Oxide
Filament/heater current
1 A
Oxide

Other

Maximum plate voltage
500 V
R-F Oscillator-Amp.
Maximum grid-1 voltage
-100 V
R-F Oscillator-Amp.
Maximum grid-2 voltage
250 V
R-F Oscillator-Amp.
Maximum plate current
60 mA
R-F Oscillator-Amp.
Maximum grid-1 current
7 mA
R-F Oscillator-Amp.
Maximum grid-2 current
25 mA
R-F Oscillator-Amp.
Maximum plate dissipation
15 W
R-F Oscillator-Amp.
Maximum output power
15 W
R-F Oscillator-Amp.

Capacitance

Grid-to-plate capacitance
0.55 pF
Published transmitting-tube table
Input capacitance
15 pF
Published transmitting-tube table
Output capacitance
12 pF
Published transmitting-tube table