8560AS

Compact conduction-cooled radial-beam tetrode for Class-AB single-sideband linear amplification and FM/CW RF service, with full ratings to approximately 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: SK600
Base pins: -
Nominal heater: 6 V / -

Description

Compact metal/ceramic radial beam tetrode for Class AB SSB linear and FM/CW RF amplifier service with 200 W conduction-cooled plate dissipation.

Socket description

Eimac SK-600 series 9-contact coaxial power-tube socket family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: SK600
Base pins: -
Nominal heater voltage: 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

Beam Power

X-ray radiationInterelectrode capacitances

Max plate voltage: 2000 V
Max screen voltage: 400 V
Max plate dissipation: 200 W
Max screen dissipation: 12 W
Max grid dissipation: 2 W
Max cathode current: 250 mA

Section values promoted from published characteristics and maximum ratings.

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

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

Heater Voltage (AC or DC) 5.7 6.0
6.3 V
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Cathode-to-heater potential, max. ±
150 V
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Input
15.7 pF
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Output
4.5 pF
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Feedback
0.04 pF
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Maximum frequency for full ratings (CW)
500 MHz
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Other

DC plate voltage
2000 V
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DC screen voltage
400 V
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DC plate current
250 mA
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Plate dissipation
200 W
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Screen dissipation
12 W
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Grid dissipation
2 W
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DC plate voltage 1000 1500
2000 V
TypicalOperation
DC screen voltage 350 350
350 V
TypicalOperation
DC grid voltage* -55 -55
-55 V
TypicalOperation
Zero-signal plate current 100 100
100 mA
TypicalOperation
Single tone plate current 250 250
250 mA
TypicalOperation
Two-tone plate current 190 190
190 mA
TypicalOperation
Single-tone screen current** 10 8
5 mA
TypicalOperation
Two-tone screen current** 2 -1
-2 mA
TypicalOperation
Single-tone grid current** 0 0
0 mA
TypicalOperation
Peak rf grid Voltage** 50 50
50 V
TypicalOperation
Plate output power 120 215
300 W
TypicalOperation
Resonant load impedance 2000 3000
4000 Ohms
TypicalOperation
value must be
25 Ohms
TypicalOperation