This specification specifies the detailed requirements for FU101F transmitting tubes. This specification applies to FU101F transmitting tubes. FU101F transmitting tubes are mainly used for single-sideband linear amplification below 110MHz, AB1 audio amplification and RF power amplification, and can also be used for general oscillation, amplification and modulation. SJ 20021-1992 Detailed Specification for FU101F Transmitting Tubes SJ20021-1992 Standard Download Decompression Password: www.bzxz.net
This specification specifies the detailed requirements for FU101F transmitting tubes. This specification applies to FU101F transmitting tubes. FU101F transmitting tubes are mainly used for single-sideband linear amplification below 110MHz, AB1 audio amplification and RF power amplification, and can also be used for general oscillation, amplification and modulation.

GB/T 3789-1991 Test method for electrical properties of transmitting tubes
GB 7274-1987 Test method for inter-electrode capacitance of electron tubes
GB 11486-1989 Test method for current and voltage of hot wire or filament of electron tubes
GJB 616-1988 Test method for electron tubes
GJB 922-1990 General specification for electron tubes
GJB 921-1990 General specification for electron tube packaging

1 Scope
Military standard electronic tubes for the electronics industry of the People's Republic of China
Detail specification for transmitting tube of type FU101E1.1 Subject content
This specification specifies the detailed requirements for the FU101F transmitting tube. 1.2 Scope of application
This specification applies to the FU101F transmitting tube. SJ20021-92
The FU101F transmitting tube is mainly used for single-sideband linear amplification, AB, class audio amplification and RF power amplification below 110MHz, and can also be used for general oscillation, amplification and modulation. 1.3 Structural characteristics
Structure: metal ceramic tetrode;
Installation position: vertical, tube base upward or downward; Cooling method: forced air cooling;
Mass: maximum 4.3kg.
1.4 Dimensions
For dimensions, see Figure A1 in Appendix A (Supplement). 1.5 Absolute Ratings
Filament voltage
Anode DC voltage
Curtain grid DC voltage
Controlled shed DC voltage
Minimum value
China Electronics Industry Corporation 1992-02-01 Published Maximum value
—500
Application status
Class C telegraph
Class C telephone (anode modulation)
Class C telegraph
Class C telephone (anode modulation)
Class C telegraph
Class C telephone (anode modulation)
1992-05-01 Implementation
Anode DC Current
Control grid power dissipation
Curtain grid power dissipation
Anode power dissipation
Metal ceramic sealing temperature
Anode heat sink root temperature
1.6 Test conditions (TC)
Filament voltage
Anode DC voltage
Curtain grid DC voltage
Control grid DC voltage
Anode DC current
Tube base cooling air volume
Anode cooling air volume
1.7 Typical characteristics
Internal amplification factor
Inter-electrode capacitance:
Control grid and cathode
Control grid and curtain grid
Control grid and anode
Curtain grid and anode Pole
Curtain grid and cathode
Anode and cathode
Constant current characteristic curve
SJ20021—92
Continued Table 1
Minimum value
Minimum value
Maximum value
Nominal value
Nominal value
See Figure C1~Figure C4 in Appendix C (reference)
Maximum value
Maximum value
Application status
C class telegraph
C class telephone (anode modulation)
C class telegraph
C class telephone (anode modulation:
Under carrier state
m'/min
Reference document
G B/T3789-91
GB7274—87
GB1148689
GJB616—88
GJB922-90
GJB921--90
3 Requirements
3.1 Detailed requirements
SJ20021-92
Test method for electrical performance of transmitting tubes
Test method for inter-electrode capacitance of electron tubes
Test method for current and voltage of hot wire or filament of electron tubes Test method for electron tubes
General specification for electron tubes
General specification for electron tube packaging
All requirements for FU101F transmitting tubes shall comply with the provisions of this specification and GJB922 "General Specification for Electron Tubes". 3.2 Marking
Model: FU101F:
Military marking:
Manufacture date and serial number:
Manufacturer's trademark.
Quality assurance regulations
Consistency inspection
Inspection or test
Visual inspection
Filament current
Control electrode DC voltage
Control grid reverse current
Curtain grid current
Control grid thermal radiation current
Curtain grid thermal radiation current
Pulse radiation
Part 1
GB11486
Test conditions
Non-working state
GB/T3789.21||tt| |GB/T3789.4
GB/T3789.2
GB/T3789.5
GB/T3789.5
GB/T3789.3
1g1=825mA
Ig2=625mA
Uap=Ug2p=Ugln=2.5kV
T=2~10μs
fep≥20Hz
Inspection requirements
Minimum value Maximum value Unit
See Appendix B||tt| |—127
400μA
Inspection or test
Insulation resistance between electrodes:
Control grid and cathodebzxz.net
Control grid and screen grid
Screen grid and anode
Quality consistency inspection
Inspection or test
Interchangeability size
Capacitance between electrodes:
Control grid and cathode
Control grid and screen grid
Control grid and anode
Screen grid and anode
Screen grid and cathode
Anode and cathode
Current distribution:
Between control grid and cathode
Curtain grid current
RF output power\
GB/T3789.12
Part 2
GB7274
SJ20021—92
Continued Table 4
Test conditions
Non-working state
Measured with 2500V megohmmeter
Test conditions
Non-working state
Non-working state
GB/T 3789.2
Ua=Ug2-1500V
Ugl=-600V
Adjust Uglp to make Ia=11A
T=2~10μs
fep≥30Hz
GB/T3789.15
f=25~30MHz
Ua=6~6.6kV
Ug2=500V
Note: 1) If the manufacturer does not have the testing conditions, the user shall proceed according to the usage conditions. 4.3 Quality consistency inspection
Part 3
Inspection requirements
Minimum value Maximum value Unit IL
Inspection requirements
Minimum value Maximum value Unit
See Appendix A
Inspection or test
Dimensions to be controlled
Vibration robustness
After vibration robustness test:
Change of filament current
Control grid DC voltage
Control grid reverse current
After impact test:
Change of filament current
Control grid DC voltage
Control grid reverse current
Guaranteed service life
GJB616.1008
GB11486
SJ2002192
Test conditions
Non-working state
Non-working state
Anode downward
Vertical direction
a=50m/s
f=25Hz
t=30nin
GB/T3789.21
GB/T3789.4
GJB616.1013
GB11486
GB/T3789.21
GB/T3789.4
Note: AQL—Qualified quality level;
IL--—Inspection level;
P—Period (month);
n---Sample size;
C Qualified judgment number:
D-Destructive items.
5 Delivery preparation
5.1 Packaging
5.1.1 Packaging requirements
Non-working state
Anode downward
Vertical direction
a=60m/s
f=2080 times/min
N=100 times
Inspection requirements
Minimum value Maximum value Unit
See Appendix A
The packaging should comply with the provisions of GJB921 "General Specification for Electronic Tube Packaging"; Packaging drawing number ××××××:
Product certificate, factory inspection form.
5.1.2 Packaging mark
The packaging box mark should comply with GB191 "Packaging Storage and Transportation Pictorial Marking". 5.1.3 Packaging test
n-2C,-1
12n=2C,0
Put the packaged launch tube on the transport vehicle and drive it for 200km at a speed of 30km/h on a third-level road, or on an equivalent bumper.
SJ20021—92
After the test, the launch tube should not have mechanical damage, and the electrical parameters of the first part of the quality consistency inspection should meet the regulations of the detailed specifications. The launch tube packaging test is carried out during product identification or structural changes, as well as changes in packaging structure and materials. The sampling plan is: n=4,C=1.
The launch tube should be stored in a dry, ventilated warehouse without the influence of corrosive gases at an ambient temperature of -5 to +40℃ and a relative humidity of no more than 80%.
5.3 Transportation
The packaged transmitting tube can be transported by any means. During transportation, it should avoid severe vibration, impact and mechanical shock. It is not allowed to be exposed to rain or corroded directly. It is not allowed to be placed outside. Notes
6.1 Ordering Document Contents
FU101F Transmitting Tube;
Detailed Specification Number:
Manufacturer Code or Name;
Quantity.
6.2 Notes on Use
a. The insulation strength between the electrodes should be tested before using the transmitting tube. b. When the transmitting tube is stored for more than half a year, the storage warehouse is relatively humid or the insulation strength between the electrodes is low, the rated filament voltage should be added for aging. The aging time
. is more than 30 minutes. During aging, the anode and the tube base must be forced to cool according to regulations. SJ20021—92
Appendix A
FU101F type transmitting tube appearance drawing
(Supplement)
Quality consistency inspection
Control cabinet pole
Filament (cathode)
Part 2 mm
Minimum size
Maximum size
Quality consistency inspection
Figure A1FU101F type transmitting tube appearance drawing
Minimum size
Part 3 mm
Maximum size
SJ20021--92
Appendix B
Visual inspection
(Supplement)
The marking of the transmitting tube shall comply with the regulations, be clear and firm. B2 The welding seam of the transmitting tube shall be smooth and flat.
B3 The anode heat sink of the transmitting tube should be evenly distributed and neatly arranged, and no obvious distortion or deformation is allowed. The coating of the transmitting tube should be bright and no stains are allowed. B4
The ceramic surface of the transmitting tube should be clean.
Appendix C
Constant current characteristic curve
(reference part)
Anode voltage (V)
Anode current (A)
First screen grid current (A)
--Control grid current (A)
Figure 8 Constant current characteristic curve of CIFU10IF type transmitting tube
(Ug2=1500V)
SJ20 021--92
Anode voltage (V)
Anode current (A)
·First screen grid current (A)
*--Control cabinet grid current (A)
Figure C2FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1250V)
7000U.(V)
—100||tt ||—200
—300
SJ20021—92
Anode voltage (V)
Anode current (A)
—·First screen grid current (A)
***--Control grid current (A)
Figure C3FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1000V)|| tt||7000U.(V)
SJ20021--92
Anode voltage (V)
Anode current (A)
Curtain grid current (A)
--Control grid current (A)
Figure C4FU101F type transmitting tube constant current characteristic curveAdditional notes:
This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. 5000
(Ug2-500V)
This standard was drafted by China Electronics Technology Standardization Institute and State-owned 774 Factory. The main drafters of this standard are: Li Ruiqin, Zhang Quanshun, Lai Wanqiong, Duan Ruiyan, Liang Qin. Project code: B91035
7000U.(V)If the storage time of the transmitting tube exceeds half a year, the storage warehouse is relatively humid or the insulation strength between electrodes is low, the rated filament voltage should be added for aging. The aging time should be more than 30 minutes. During aging, the anode and tube base must be forced to cool according to regulations. SJ20021—92
Appendix A
FU101F type transmitting tube appearance drawing
(Supplement)
Quality consistency inspection
Control cabinet pole
Filament (cathode)
Part 2 mm
Minimum size
Maximum size
Quality consistency inspection
Figure A1FU101F type transmitting tube appearance drawing
Minimum size
Part 3 mm
Maximum size
SJ20021--92
Appendix B
Visual inspection
(Supplement)
The marking of the transmitting tube shall comply with the regulations, be clear and firm. B2 The welding seam of the transmitting tube shall be smooth and flat.
B3 The anode heat sink of the transmitting tube should be evenly distributed and neatly arranged, and no obvious distortion or deformation is allowed. The coating of the transmitting tube should be bright and no stains are allowed. B4
The ceramic surface of the transmitting tube should be clean.
Appendix C
Constant current characteristic curve
(reference part)
Anode voltage (V)
Anode current (A)
First screen grid current (A)
--Control grid current (A)
Figure 8 Constant current characteristic curve of CIFU10IF type transmitting tube
(Ug2=1500V)
SJ20 021--92
Anode voltage (V)
Anode current (A)
·First screen grid current (A)
*--Control cabinet grid current (A)
Figure C2FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1250V)
7000U.(V)
—100||tt ||—200
—300
SJ20021—92
Anode voltage (V)
Anode current (A)
—·First screen grid current (A)
***--Control grid current (A)
Figure C3FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1000V)|| tt||7000U.(V)
SJ20021--92
Anode voltage (V)
Anode current (A)
Curtain grid current (A)
--Control grid current (A)
Figure C4FU101F type transmitting tube constant current characteristic curveAdditional notes:
This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. 5000
(Ug2-500V)
This standard was drafted by China Electronics Technology Standardization Institute and State-owned 774 Factory. The main drafters of this standard are: Li Ruiqin, Zhang Quanshun, Lai Wanqiong, Duan Ruiyan, Liang Qin. Project code: B91035
7000U.(V)If the storage time of the transmitting tube exceeds half a year, the storage warehouse is relatively humid or the insulation strength between electrodes is low, the rated filament voltage should be added for aging. The aging time should be more than 30 minutes. During aging, the anode and tube base must be forced to cool according to regulations. SJ20021—92
Appendix A
FU101F type transmitting tube appearance drawing
(Supplement)
Quality consistency inspection
Control cabinet pole
Filament (cathode)
Part 2 mm
Minimum size
Maximum size
Quality consistency inspection
Figure A1FU101F type transmitting tube appearance drawing
Minimum size
Part 3 mm
Maximum size
SJ20021--92
Appendix B
Visual inspection
(Supplement)
The marking of the transmitting tube shall comply with the regulations, be clear and firm. B2 The welding seam of the transmitting tube shall be smooth and flat.
B3 The anode heat sink of the transmitting tube should be evenly distributed and neatly arranged, and no obvious distortion or deformation is allowed. The coating of the transmitting tube should be bright and no stains are allowed. B4
The ceramic surface of the transmitting tube should be clean.
Appendix C
Constant current characteristic curve
(reference part)
Anode voltage (V)
Anode current (A)
First screen grid current (A)
--Control grid current (A)
Figure 8 Constant current characteristic curve of CIFU10IF type transmitting tube
(Ug2=1500V)
SJ20 021--92
Anode voltage (V)
Anode current (A)
·First screen grid current (A)
*--Control cabinet grid current (A)
Figure C2FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1250V)
7000U.(V)
—100||tt ||—200
—300
SJ20021—92
Anode voltage (V)
Anode current (A)
—·First screen grid current (A)
***--Control grid current (A)
Figure C3FU101F type transmitting tube constant current characteristic curve 5000
(Ug2=1000V)|| tt||7000U.(V)
SJ20021--92
Anode voltage (V)
Anode current (A)
Curtain grid current (A)
--Control grid current (A)
Figure C4FU101F type transmitting tube constant current characteristic curveAdditional notes:
This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. 5000
(Ug2-500V)
This standard was drafted by China Electronics Technology Standardization Institute and State-owned 774 Factory. The main drafters of this standard are: Li Ruiqin, Zhang Quanshun, Lai Wanqiong, Duan Ruiyan, Liang Qin. Project code: B91035
7000U.(V)
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