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DL73

Subminiature VHF output pentode designed also for frequency-multiplier service. Its compact battery-oriented construction provides RF power generation and harmonic multiplication at high frequencies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: WIRE8
Base pins: 8
Nominal heater: 1.25 V / 200 mA

Description

Subminiature VHF output pentode and frequency multiplier.

Socket description

Subminiature all-glass 8-wire lead family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: WIRE8
Base pins: 8
Nominal heater voltage: 1.25 V
Nominal heater current: 200 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

No fixed ratings are recorded for this section.

Published ratings, characteristics, operating conditions and capacitances extracted from supplied Mullard source.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

HeaterOrFilamentVoltage
1.25 V
HeaterOrFilamentCurrent
200 mA
MaximumOperatingFrequency
200 MHz
Application
VHF output and frequency multiplier

Other

Plate Voltage
150 V
ClassC
Screen Voltage
110 V
ClassC
DrivePower
100 mW
Frequency=200MHz
Power Output
1.2 W
ClassC