6A2P

Russian heptode for oscillator-converter service in radio receiving equipment. Its multi-grid construction combines local oscillation and mixing, translating incoming RF signals to the intermediate frequency from a conventional 6.3 V heater supply.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 300 mA

Description

The 6A2P is an indirectly heated converting heptode for frequency conversion in electronic equipment.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 300 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

Heptode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0003 S
Max plate voltage: 330 V
Max screen voltage: 110 V

Electrical values extracted only from the filename-designated tube block; page-edge fragments excluded.

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 Russian

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristics

Anode voltage
250 V
Published operating point
Grid 2 and grid 4 voltage
100 V
Published operating point
Grid 3 voltage
-1.5 V
Published operating point
Grid 1 current
0.5 mA
Published value
Anode current
3 mA
Published nominal
Grid 2 and grid 4 current
7 mA
Published nominal
Grid 1 circuit resistance
20 kOhm
Published value
Conversion transconductance
0.3 mA/V
Grid 3 AC 0.7 V RMS
Heterodyne transconductance
4.5 mA/V
Anode 100 V; grids 1 and 3 at 0 V
Input capacitance
6.7 pF
Published nominal
Output capacitance
9.25 pF
Published nominal
Transfer capacitance
0.35 pF
Published value

Data set 02

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristics

Transconductance
7 V
Крутизна преобразования (прн исдпер—О7В),