0A2, 0A2WA
Voltage Regulator, 150 Volts
Base: 7-pin miniature
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0A2WA RCA NIB 69-18
0A2WA RCA NIB 69-18
0A2WA RCA NIB 69-18
0A2WA RCA NIB 69-18
0A2WA Sylvania Used
0A2WA National NIB
0A2WA National NIB
0A2WA National NIB
0A2WA National NIB
0A2WA Unknown Used

0A3, 0A3A
Voltage Regulator, 75 Volts
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0A3 GE NIB
0A3A Raytheon NIB 13 U20
0A3A Raytheon NIB

0A4, 0A4G
Gas Thyratron
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0A4G RCA NIB   ST    
0A4G RCA NIB   ST     
ST = "Coke Bottle"

0B2, OB2WA
Voltage Regulator, 108 Volts
Base: 7-Pin miniature
Alias: 6627
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0B2 RCA NIB 6952     1800
0B2 RCA NIB 6952      
0B2 RCA NIB 6952      
0B2 RCA NIB 7052      
0B2 Mullard NIB HD      
0B2 Mullard NIB HD      
0B2 Sylvania NIB KH JAE      
0B2 Sylvania USED KH JAE      
0B2WA Raytheon NIB 58-26      
0B2WA Raytheon NIB 62-30      
0B2WA Raytheon NIB        
0B2WA Raytheon NIB        
0B2WA Sylvania NIB        
0B2WA Sylvania USED        
0B2WA Tungsol NIB        

0B3
Voltage Regulator, 90 Volts
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0B3 GE NIB 62-04      
0B3 GE NIB 62-04      
0B3 GE NIB 62-04      
0B3 GE NIB 62-04      
0B3 GE NIB 60-48      
0B3 GE NIB 62-22      
0B3 GE NIB 56-48      
0B3 Marshall NIB 6402      

0C3
Voltage Regulator, 105 Volts
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0C3 Hytron NIB   ST    
0C3 Hytron NIB   ST    
0C3 RCA Used 58-22 ST    
0C3 RCA Used 58-22 ST    
0C3 RCA Used 58-13 ST    
0C3 Hytron Used   ST    
0C3 Sylvania Used   ST    
0C3 RCA Used 60-43 ST    
0C3 RCA Used   ST    
0C3 RCA Used   ST    
0C3 RCA Used   ST    
0C3 RCA NIB   ST    
0C3 GE NIB 62-17 ST     
ST = "Coke Bottle"

0D3
Voltage Regulator, 105 Volts
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
OD3 Hytron NIB   ST    
OD3 RCA Used 3-35 ST    
OD3 Marshall NIB   ST    
OD3 CBS NIB 60-43 ST    
OD3 Sylvania NIB   ST    
OD3 RCA NIB 6248 ST    
OD3 Marshall NIB   ST    
OD3 Hytron Used 9-09  JAN ST    
OD3 Unknown Used   ST    
OD3 Unknown Used   ST    
OD3 Sylvania Used   ST    
OD3 CBS Used 6--43 ST    
OD3 CBS Used 6--43 ST    
OD3 CBS Used 6--43 ST    
OD3 RCA Used 0-48 ST     
ST = "Coke Bottle"

0G3
Voltage Regulator, 85 Volts
Base: 7-Pin miniature
Alias: 85A2
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
0G3 Mullard
England		 Used 1022-650
0G3 Amperex
Great Britian		 NIB
0G3 English Electric Valve NIB
0G3 Mullard
Great Britian		 NIB
0G3 Mullard
Great Britian		 NIB        
0G3 Mullard
England		 NIB
0G3 Electronic Enterprises
W. Germany		 NIB

1B3, 1B3GT
High Voltage Diode
Half-Wave Rectifier
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1B3GT GE Used 59-04
1B3GT Zenith Used
1B3GT Standard Brand NIB 8-61

1G3, 1G3GT
Diode, High voltage rectifier
Base: Octal
Alias: 1B3GT
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1G3GT Philco Used
1G3GT RCA NIB G 26P
1G3GT RCA NIB G 26P

1L4
Pentode
Base: 7-Pin miniature
RF-Amplifier
Alias: DF92
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1L4 RCA NIB

1L6
Pentagrid Converter
Base: 7-Pin Miniature
Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1L6 Tungsol Used

1N5, 1N5GT/G
Sharp Cut-off Pentode
Base: Octal
Alias: 1P5GT
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1N5GT/G RCA Used

1P28
Photomultiplier
Base: 11-Pin "Octal"
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1P28A RCA          

1P5, 1P5GT
Remote Cut-off Pentode
Base: Octal
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1P5GT Tungsol USED

1U4, 1U4WA
Sharp Cut-off Pentode
Base: 7-Pin Miniature
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1U4 RCA Used
1U4 Philco Used
1U4 Unknown Used

1X2B
High-Voltage Diode
Base: 9-Pin miniature
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test - 539C Min - 539C
1X2B Hytron Used

1Z2
Diode
Base: 7-Pin miniature
 Data Sheet

Tube Manufacturer Condition Date Code Shape Test
539C 		Minimum
539C
1Z2 Chatham NIB