:til.UU

:til.UU
an
AlliED
pub/;cat;an
,
Directly Interchangeable
Tubes
NOTE: Tube5 in the "Tube Number" column are directly replaceable with tubes in the "Reploce With" column.
The reverse, however, will not be a correct replacement on many tube types.
Replacements shown for many older tube types are the newer more reliable industrial equivalents. Many of these
will be listed only in the catalog of Allied Radio's industrial subsidiary,
Allied Electronics Corp., but may be
purchased from Allied Radio. Prices on request.
Tube
Number
Replace
with
OA2
6073
16626
OA3
OM
VR75
1267
OB2
fB2WA
6074
6627
OB3
OC3
003
OY4
VR90
VR105
VR150
OY4G
OZ4
1003
OZ4A
1
fA4P
IMT
1M
IB4
IB4P
fB4T
32
34
951
Tube
Number
lAX2
IB3GT
IB4
IB5
lC4
lC5
lC8
105
ID8
10N5
lE4
lE5
lE8
lA5
IAC5
lA05
IT5
IV5
lW5
lAF4
fAJ4
lAM4
IT4SF
lAF5
~lAH5
lAR5
lAG5
~2E41
2E42
lAH5
1AF5
1lAR5
lAJ4
fAF4
lAM4
IT4SF
lJ3GT
lAM4
lJ5
lAQ5
fAF4
lAJ4
IT4SF
lR5SF
lAR5
~ lAF5
lAH5
lK3GT
lAS5
lAU3
IG3GT
IG4
IG5
IU5SF
pN2
IN2A
lK4
lK5
Replace
with
\!H2
/lS2A
AU3
IG3GT
IG3GT/IB3GT
f
f'GlK3GT
T
IN2
r
IN2A
M
IMP
IMT
' IB4P
fB4T
32
34
951
25
lK4
lQ5
lE8
lE5
IB8
IU5
IG4
ID5
lC8
AU3
IB3GT
IG3GT/IB3GT
f
lK3GT
IN2
IN2A
lE4
lJ5
f'GT
fAU3
IB3GT
IG3GT/IB3GT
fK3GT
IN2
IN2A
IG5
fAU3
IB3GT
IG3GT
(3GT/IB3GT
lJ3GT
IN2
IN2A
lC4
IM5
Tube
Number
Replace
with
lLM
lLA6
lLC5
lLC6
lLE3
lLF3
lLN5
1M3
IM5
lLME
lLC6
lLN5
lLA6
lLF3
lLE3
lLC5
IN3
lK5
IN2
fN2A
lAU3
lJ3A
IN2A
fN2
IAU3
lJ3A
1M3
IP5
IN5
lC5
lAQ5
IN3
IN5
IP5
lQ5
lR5SF
lS2
lS6
IT4SF
ITS
lT6
IU4
IU5
IU5SF
IV
IV5
lW5
lX2
2A3
2A7
2AF4
2AV2
2AZ2
2B7S
2BA2
2CW4
2CY5
20S4
2EA5
~ lS2A
IH2
IT6
fAF4
lAJ4
lAM4
lA5
lS6
5910
IDN5
lAS5
6Z3
lAC5
lA05
1X2A
lX2B
1
~2A3H
5930
2A7S
~2AF4A
2AF4B
2BA2
2BJ2
2B7
2AV2
20S4
~2EA5
2EV5
2CW4
2EV5
Directly Interchangeable
Tubes
NOTE: Tubes in the uTube Number" column are directly replaceable with tubes in the uReplace With" column.
The reverse, however, will not be a correct replacement on many tube types.
Replacements shown for many older tube types are the newer more reliable industrial equivalents. Many of these
will be listed only in the catalog of Allied Radio's industrial subsidiary,
Allied Electronics
Corp., but may be
purchased from Allied Radio. Prices on request.
Tube
Number
Replace
with
OA2
{ 6073
6626
OA3
OM
VR75
1267
OB2
fB2WA
6074
6627
OB3
OC3
003
OY4
VR90
VR105
VR150
OY4G
OZ4
1003
OZ4A
1
fA4P
lMT
1M
lB4
lB4P
fB4T
32
34
951
lA5
lAC5
lA05
IT5
lV5
lW5
lAF4
fAJ4
lAM4
IT4SF
lAF5
{ lAH5
lAR5
lAG5
~2E4l
2E42
lAH5
{ lAF5
lAR5
lAJ4
fAF4
lAM4
IT4SF
lAM4
lAQ5
fAF4
lAJ4
lT4SF
lR5SF
lAR5
~ lAF5
lAH5
lAS5
lAU3
I
Tube
Number
lAX2
lB3GT
lB4
lB5
lC4
lC5
lC8
ID5
108
10N5
lE4
lE5
lE8
lG3GT
lG4
lG5
1J3GT
U5
lK3GT
IU5SF
pN2
lN2A
lK4
lK5
Replace
with
I1H2
/lS2A
AU3
lG3GT
lG3GT/lB3GT
(3GT
lK3GT
f
lN2
lN2A
M
IMP
lMT
' lB4P
fB4T
32
34
951
25
lK4
lQ5
lE8
lE5
lB8
IU5
lG4
ID5
lC8
r
fAU3
lB3GT
lG3GT/lB3GT
(3GT
lK3GT
lN2
lN2A
lE4
1J5
fAU3
IB3GT
lG3GT/lB3GT
fK3GT
lN2
lN2A
lG5
fAU3
lB3GT
lG3GT
(3GT/lB3GT
1J3GT
lN2
lN2A
lC4
lM5
Tube
Number
Replace
with
lLM
lLA6
lLC5
lLC6
lLE3
lLF3
lLN5
1M3
lM5
1LME
lLC6
lLN5
lLA6
lLF3
lLE3
lLC5
lN3
lK5
lN2
fN2A
lAU3
1J3A
lN2A
fN2
lAU3
1J3A
1M3
lP5
lN5
lC5
lAQ5
{ lS2A
lH2
lT6
lN3
lN5
lP5
lQ5
lR5SF
lS2
lS6
IT4SF
ITS
lT6
IU4
lU5
IU5SF
IV
IV5
lW5
lX2
2A3
2A7
2AF4
2AV2
2AZ2
2B7S
2BA2
2CW4
2CY5
20S4
2EA5
fAF4
lAJ4
lAM4
lA5
lS6
5910
ION5
lAS5
6Z3
lAC5
lA05
lX2A
lX2B
1
~2A3H
5930
2A7S
~2AF4A
2AF4B
2BA2
2BJ2
2B7
2AV2
20S4
{2EA5
2EV5
2CW4
2EV5
Tube
Number
Replace
with
2ER5
FQ5
2FQ5A
f 2FY5
2EV5
2E30
2E31
2E32
2E35
2E36
2E41
2E42
2EA5
5812
2E32
2E31
2E36
2E35
2E42
2E41
2FH5
fES5
2FQ5
2FQ5A
2GK5
Tube
Number
Replace
with
3AW3
PA3
3CA3
3ER5
3B2
PA3
3AW3
3EV5
3B5
pC5
3Q5
3FH5
3B7
3BA6
3BC5
1291
3AU6
3CE5
3BE6
pBY6
3CS6
3BU8
13BU8A
3GS8
3HS8
3KF8
3GK5
3GS8
2FQ5
FQ5A
2ES5
f 2GK5
3BX6
3BY7
2FS5
2GU5
3BY6
13CS6
2FY5
fER5
2FQ5
2FQ5A
2GK5
3BY7
3BX6
3BZ6
fCB6
3CF6
3DK6
3E5
2FQ5
I
12FQ5A
3C4
2GU5
2G21
2Gn
2FS5
2G22
2G21
3C5
PB5
3Q5
3CA3
2HA5
fHK5
2HM5
2HQ5
PA3
3AW3
BZ6
3CF6
f 3DK6
3BC5
fHA5
2HM5
2HQ5
3CB6
3CE5
3GU5
FQ5
3FQ5A
f 3FY5
3EA5
13ES5
3FQ5
3FQ5A
3GK5
FQ5A
3ES5
f 3GK5
3GU5
3ER5
3FQ5
13FQ5A
J3BU8
3BU8A
3HS8
3KF8
3FS5
3HA5
fHK5
3HM5
3HQ5
3HK5
fHA5
3HM5
3HQ5
3HM5
fHA5
3HK5
3HQ5
3HT6
3HM6
3HQ5
fHA5
3HK5
3HM5
BZ6
3CB6
f 3DK6
3HS8
13BU8
3BU8A
3GS8
3KF8
3CS6
13BY6
3BE6
3HT6
3HM6
pEA5
3EV5
3KF8
fHA5
2HK5
2HQ5
2HQ5
fHA5
2HK5
2HM5
3CY5
2X2
2Y2
2Y2
2X2
3DK6
3A3
PAW3
3CA3
3AF4B
3BAG
3FS5
3FY5
Replace
with
3CF6
2HM5
3AF4A
3AU6
3FQ5
3BE6
2GK5
2HK5
Tube
Number
3DZ4
3E5
3EA5
3EH7
3EJ7
BZ6
3CB6
f 3CF6
3AF4B
3C4
3EV5
3EJ7
3EH7
3LE4
3Q4
13BU8
3BU8A
3GS8
3HS8
3LF4
3S4
3Q5
PB5
3C5
3S4SF
pW4
3Z4
Tube
Number
Replace
with
3W4
PS4SF
3Z4
3Z4
PS4SF
3W4
4BA6
4AU6
4CE5
4AU6
4BA6
4BC5
4BC8
4BE6
BQ7A
4BS8
f 4BX8
4BZ7
4BZ8
5BK7A
4CS6
1
Tube
Number
Replace
with
{4BZ6
4DE6
4DK6
4KF8
fBU8
4GS8
4HS8
4CE5
4BC5
4KN8
4ES8
4CF6
BZ6
4CB6
f 4DK6
4CS6
4BE6
4DE6
BZ6
4CB6
f 4DK6
BZ6
4CB6
f 4DE6
~ 5EA8
5U8
4DK6
4BQ7A
fBC8
4BS8
4BX8
BZ7
4BZ8
5BK7A
4EH7
4EJ7
4ES8
4EW6
4EJ7
4EH7
4KN8
4GM6
4FS7
4GJ7
4GM6
4GH8
4GX7
4EW6
4GS8
fBU8
4HS8
4KF8
4GX7
4GJ7
4HA5
~ 4HM5
4HQ5
4HK5
fHA5
4HM5
4HQ5
4HM5
~ 4HA5
4HQ5
4HM6
4HT6
4HQ5
~4HA5
4HM5
4BS8
fBC8
4BQ7A
4BX8
BZ7
4BZ8
5BK7A
4BU8
fGS8
4HS8
4KF8
4BX8
fBC8
4BQ7A
4BS8
4BZ7
4BZ8
5BK7A
4BZ6
4BZ7
4BZ8
1
fCB6
4DE6
4DK6
fBC8
4BQ7A
4BS8
4BX8
4BZ8
5BK7A
1
fBC8
4BQ7A
4BS8
, 4BX8
4BZ7
5BK7A
t
Replace
with
4CB6
4BL8
r
r
Tube
Number
4HS8
fBU8
4GS8
4KF8
4HT6
4HM6
4JK6
~4EW6
4JL6
4JL6
~4EW6
4JK6
5AS4
5AU4
5AW4
S4A
C
5DB4
5U4GB
5V3
5V3A
r
pV3
5V3A
S4
5AS4A
5AU4
5DB4
5R4G
5U4GB
tU"A
5V3
5V3A
fAXR'
5AS4
5AX4
5AS4A
5R4G
fT45U4GA
5U4GB
5V4
5BK7A
fBC8
4BQ7A
4BS8
BX8
4BZ7
4BZ8
r
5BQ7A
~ 5BS8
5BZ7
5BR8
5FV8
5BS8
PBQ7A
5BZ7
5BZ7
PBQ7A
5BS8
5CG4
fAR4
5V4
5Z4
5FG7
5CZ5
5CG8
5CM6
5DB4
fAS4
5AS4A
5U4GB
Tube
Number
Replace
with
5DH8
5DJ4
5FV8
5DN4
5EA8
5U8
5EW6
5FV8
5GM6
5BR8
5GH8
{ 5EA8
5U8
5GJ7
5GX7
5GM6
5GX7
5EW6
5GJ7
5JK6
{ 5EW6
5JL6
5JL6
{ 5EW6
5JK6
5T4
{ 5AR4
5R4
5U4G
5U4GA
5U4GB
SU8
5U4GA
5U4GB
5AR4
5AS4
5AS4A
5AU4
5DB4
5R4
5T4
5V3
5931
)5U4GB
5AS4
5AS4A
(A"'
5DB4
5R4
5V3
fAS4
5AS4A
5AU4
l5DB4
5V3
5V3A
5EA8
SV3
~5V3A
5AU4
5V4
pV4GA
5AR4
Tube
Number
5W4
5X3
5Y3
Replace
with
fAR4
5GG4
5R4
6AG5
5V4
5Y3
5Z4
6AG7
6AH6
6AJ5
C
f380
83V
88
r"t:
5AX4
5GG4
5R4
5Z4
6087
6106
5Z3
p31275
5Z4
j5AR4
5GG4
5V4
6087
6AB4
6AB5
6664
6N5
6AB7
6AG7
6AD4
Tube
Number
r
AG7
6AJ7
1853
l6AB7
6AJ7
1852
6134
{"37
5719
5719A
5898
Replace
with
r
BG5
6GE5
6186
6AK7
6485
7755
6AJ7
{ 6AB7
6AG7
6AK5
1220
5654
6096
6968
1
6AK7
6AG7
6AK8
{ 6T8
6T8A
6AL5
fEB5
5726
6058
l6097
6663
7631
6AM5
6516
6AM6
{ 6064
7498
6AM8
6HJ8
6AQ5
AQ5A
6BM5
7HG5
l6005
6095
6669
f
6AR6
r
6AS4
j6DM4
6DM4A
6DQ4
6DT4
098
6384
7756
6AD6
6AF6
6AD8
{ 6DG8
6N8
6AS6
{ 5725
7752
6AE5
6AF3
6AF5
6AF6
6AF5
6BR3
6AE5
6AD6
6AS7G
j6AS7GA
6AS7GT
6080
6520
6AFll
~ 6ASll
6BDll
6ASll
~ 6AFll
6BDll
Tube
Number
6AT6
6AU4GT
6AU5GT
Replace
with
16AV6
6BK6
6BT6
6066
6AU6
6AU7
7AU7
6AU8
j6AU8A
6AW8A
6BA8A
6BH8
6AV5GT
~ 6AV5GA
6FW5
GAV6
j6AT6
6BK6
6BT6
6066
6AW8
6AY3A
6AS4GT
6DA4
{'D6DM4
AlA
fAX4GTB
6DA4
6DA4A
6DM4
{6DM4A
6DQ4
6DT4
fLM8
6U8
6U8A
6BA3
6BS3
{6BS3A
6DW4
6DW4A
6DW4B
6AY3B
6BA3
6BS3
{ 6BS3A
6DW4
6DW4A
6DW4B
)""
fAWSA
6AU8
6AU8A
6BA8
{6BA8A
6JV8
6KS8
6LF8
fEA8
6GH8
6GH8A
)""
6B6
6DM4A
6DQ4
6DT4
6AX4GTA
6AY3
6AY3B
6CB6A
6CF6
6CD6
6DE6
Replace
with
fAY3A
6AY3B
fB6
fAX4GTA
6AX4GTB
6AX4
6AX8
6AU4GTA
6FW5
j6AU6A
6BA6
6136
7543
6AW6
Tube
Number
6AY3A
6BA3
6BS3
{ 6BS3A
6DW4
6DW4A
6DW4B
6Q7
6AY3A
fAY'
6AY3B
6BA3
6BA5
6BS3
{6BS3A
6DW4
6DW4A
6DW4B
5638
fAUE
6AU6A
6BA6
6BD6
6CG6
f749
6660
7496
7543
6BA8
fBA8A
6AU8
6AU8A
AW8
6AW8A
6BH8
r
Tube
Number
6BA8A
6BC5
Replace
with
fBA8
6AU8
6AU8A
AW8
6AW8A
6BH8
r
~ 6AG5
6CE5
~6BQ'
6BC8
6BQ7A
6BS8
6BX8
{6BZ7
6BZ8
6HK8
XI55
6BD6
~6BA6
6CG6
6BDll
6AFll
6BF6
16BY6
6CS6
5750
5915
6BU6
6BFl
~ 6BG7
6021
6BG7
~ 6BFl
6021
6BH6
~ 6661
7693
6BE6
6BH8
r
AU8
6AU8A
6AW8
fAW8A
6BA8
6BA8A
6BJ3
6AX3
6BJ6
fBJ6A
6662
7694
6BK6
fAT6
6AV6
6BT6
6BL7GT
fBL7GTA
6BX7GT
6DN7
6BL8
j6EA8
6LN8
6U8
6U8A
Tube
N mber
Replace
with
6BM5
~ 6AQ5
6AQ5A
6BQ5
f189
7189A
7320
6BQ6GT
6BQ6GTA
) 6BQ6GTB
6BQ6GTB/6CU6
6CU6
( 6DQ6A
6DQ6B
6FH6
6GW6
f'Q7A
6BQ7
6BC8
6BS8
6BX8
6DA5
6059
6BR8
fBR8A
6FV8
6FV8A
6JN8
6BS3
6BS3A
6BS8
fFV8
6FV8A
6JN8
16BS3A
6DW4
6DW4A
6DW4B
6BS3
6DW4
6DW4A
6DW4B
1
f'CS
6BT6
fAT6
6AV6
6BK6
6BU6
6BF6
Tube
Number
Replace
with
16BU8A
6GS8
6HS8
6KF8
j6BU8
6GS8
6HS8
6KF8
6CA5
6EH5
6BU8A
6CB5
~ 6CB5A
6Cl5
6BW6
6061
6CB5A
6BW7
~ 6BX6
6El7
6BX6
f6BW7
,,6BY7
6El7
6BX7GT
fBl7GT
6Bl7GTA
6DN7
fBC8
6BX8
6BQ7
6BQ7A
6BS8
(6Bll
6Bl8
6HK8
X155
6BY6
~ 6BE6
6CS6
6BY7
6BX6
6Bl6
6Bll
fDC6
6HQ6
6JH6
6BQ7
6BQ7A
6BS8
f'"
(6BX8
6Bl8
6HK8
X155
fBC8
6BQ7
6BQ7A
6BX8
fBll6Bl8
6HK8
X155
Replace
with
6BU8
(6Bll
6Bl8
6HK8
X155
6BR5
6BR7
6BR8A
Tube
Number
6Bl8
6BQ7
6BQ7A
6BS8
fBX8
6Bll
6HK8
X155
6C4
6C5
6100
~ 6J5
615
6C6
6CB6
f71221
1223
7700
r
6Cl5
CB
"
6AW6
6CF6
6DC6
6DK6
fDE6
6HQ6
6676
7732
6CD6G
~ 6DN6
6EX6
6CE3
6CD3
6CF6
fAW6
6CB6
6CB6A
l6DC6
6DE6
6DK6
6CG3
6CD3
6CG6
~ 6BA6
6BD6
6CG8
~ 6CG8A
6FG7
6CG8A
6FG7
6CH6
6CH7
6CJ6
6Cl6
~ 6132
7499
6CX7
6DR6
f197
6297
6677
6CQ4
6CQ6
6CS5
6DE4
6065
6DW5
6CS6
~ 6BE6
6BY6
Tube
Number
6CU6
Replace
with
)6BQ6GTB
6BQ6GTB/6CU6
6DQ6
{'D6DQ6B
Q'A
6FH6
6GW6
6CW4
~ 6DS4
7895
6CW7
6CX7
6CF7
6CH7
6CX8
6CY5
6D6
6DA4
f"
6GN8
6HF8
6JA8
6JE8
Tube
Number
6DE7
6DG6GT
6DJ8
6DK6
Replace
with
6EW7
6W6GT
6ES8
)6CB6
6CB6A
6CF6
{'O6DE6
C,
6HQ6
8136
6DM4
16DM4A
6DA4A
6DQ4
6DT4
6DM4A
6DT4
16EA5
6EV5
7717
8113
78
6DN6
fCD6G
6CD6GA
6EX6
6DQ4
6DT4
)6DA4A
6AX4GTA
6AX4GTB
6DM4
(6DM4A
6DQ4
6DT4
6DQ6
Q6A
16D
6DQ6B
6FH6
6GW6
6DQ6A
f
6DQ6B
DQ6B
6FH6
6GW6
Tube
Number
Replace
with
6EL7
~ 6BW7
6BX6
6EM7
56EA7
/6GL7
6ES6
~ 6ET6
6FD6
6ES8
6DJ8
6EV5
6EW6
6EX6
6F4
6F7
6FC7
~ 6ES6
6FD6
6EA5
6GM6
6CD6GA
6L4
6F7S
6CW7
6FD6
{ 6ES6
6ET6
6FD7
6FH5
6FR7
6ES5
6FH6
{6DQ6B
6GW6
6FQ5
{ 6FQ5A
6GK5
6FQ5A
6ET6
6GW6
6FR7
6FS5
{ 6FQ5
6GK5
6FD7
6FG5
fDM4A
6DQ4
6DT4
6DR6
6CJ6
6FV8
{ 6FV8A
6BR8A
6BR5
6954
6DR7
~ 6FD7
6FR7
6FV8A
)6AW6
6BZG
6CB6
6DS4
{ 6CW4
7895
6FW8
~ 6FV8
6BR8A
6KN8
6EA5
6EV5
6G5
6DE6
6DK6
6EA7
~ 6EM7
6GL7
6GE8
fH56T5
6U5
7734
6DC8
~ 6AD8
6N8
6EA8
{ 6LN8
6U8A
6G5
{ 6T5
6U5
6DE4
6CQ4
6EB5
6AL5
6DA4A
6DA5
6DB6
6DC6
6DE6
{'C6CF6
B6A
)6AW6
6CB6
6CB6A
6EB8
6DC6
6DK6
6HQ6
6EH5
6EH7
6EJ7
("
r
CX8
6GN8
6HF8
6JE8
6CA5
6EJ7
6EH7
6GF5
6GE5
6GH8
fGH8A
6EA8
6U8A
6GH8A
fGH8
6EA8
6U8A,
6GJ?
6GX7
Tube
Number
6GK5
6GL7
6GM6
6GN8
6GS8
6GW6
Replace
with
~ 6FQ5
6FQ5A
fa
16BU8
6BU8A
6HS8
6KF8
6H5
fG5
6T5
6U5
fHK5
6HM5
6HQ5
r
AB
6EB8
6GN8
6JA8
6JE8
6HQ6
I
f'"
6BQ7
6BQ7A
6BS8
6BL8
fHA5
6HK5
6HQ5
6HT6
fHA5
6HK5
6HM5
r
BZ6
6CB6
6CB6A
fDE6
6DK6
6JH6
6HT6
6HZ6
~ 6GX6
6GY6
!
i
!
i
II
I
I
Tube
Number
6JN8
fBR8A
6FV8
6FV8A
6JS6
~ 6JS6A
6KD6
6JS6A
~ 6JS6
6KD6
I
I
I
I
I
I
6JT8
6JV8
I
I
Replace
with
6JW8
t"
6KR8
6KV8
6LK8
6LY8
r
AW8
6AW8A
6KS8
6LF8
6LX8
6K4
6778
6K7
~ 6U7
5732
6J4
8532
6J5
~ 6C5
6L5
6Kll
6J6
) 5964
6030
/6099
6101
6KD8
6J7
f233
1620
7000
6KF8
CX8
6EB8
6GN8
j6BU8
6BU8A
6GS8
6HS8
6KM6
6JF6
fHF8
6JE8
6JT8
6KR8
6JA8
6AM8A
fHA5
6HM5
6HQ5
Replace
with
j6BU8
6BU8A
6GS8
6KF8
6HM6
6HS8
6AQ5A
fBX8
6BZ7
6BZ8
X155
6HL8
6HM5
6DQ6B
~ 6GX6
6HZ6
6HK8
I
6EB8
6HF8
6JA8
6JE8
6GY6
6HK5
I
6HQ5
6GJ7
6HJ8
I
I
6EW6
6GX7
6HG5
i
1
Tube
Number
6HM6
~ 6GY6
6HZ6
6HF8
!
~ 6EA7
6EM7
6GX6
6HA5
i
r
6JE8
16EB8
6GN8
6HF8
6JA8
6JF6
6KM6
6JH6
~ 6BZ6
6HQ6
6JK6
~ 6EW6
6JL6
6KV8
6JL6
~ 6EW6
6JK6
6L4
6KS8
r'
6Qll
6GH8
6GH8A
6U8
6U8A
r
JT8
6KV8
6LB8
6LY8
r
AU8
6AU8A
6AW8
fAW8A
6JV8
6LF8
r
JT8
6KR8
6LB8
6LY8
6F4
I
Tube
Number
6L5
Replace
with
~ 6C5
6J5
6L6G
6L6GA
6L6GAY
6L6GB
6L6GC
6L6GT
6L6GX
1622
5881
5932
7581
7581A
6L6
6L7
6LB8
I
I
i
Ii
I
I
I
Tube
Number
J 6JT8
6KR8
~ 6SG7
6006
6SJ7
6SK7
6SL7
5693
6137
6113
6SN7
fSN7GTA
6SN7GTB
5692
6SQ7
6SU7
6SQ7W
6188
6T5
fG5
6H5
6U5
6T8
1 6AK8
6LM8
fAX8
6GH8
6GH8A
6LN8
6U8A
6JT8
6KR8
6KV8
6LB8
1
6T8A
j GAX"TB
6U4GT
6DM
6DMA
6DM4
6DM4A
[6DQ'
6DT4
6U5
6U7
6K7
r
6U3
6N5
~ 6N5G
6AB5
6U8
6N8
~ 6AD8
6DC8
U8A
6EA8
6LN8
( 1252
6678
7731
6Q7
~ 6B6
6118
6U8A
~ 6EA8
6LN8
6R8
~ 6T8
6T8A
6SA7
~ 6SB7Y
5961
6SE7
6SD7
6SG7
~ 6SH7
6006
6W4GT
6W4GTA
6AX4GT
6AX4GTA
6AX4GTB
6DM
6DMA
6DM4
6DM4A
6DQ4
6DT4
6U4GT
6W6
~ 6W6GT
6DG6GT
6X4
fBX4
6063
6202
6X5
fX5GT
024
024A
6X8
6Z3
7M
6X8A
IV
XXL
7A6
5679
7A7
FA7LM
7H7
6W4GT
6W4GTA
fG5
6H5
6T5
fV6G
6V6GT
6V6
6V6GTA
6V6GTX
{'V6V6GX
6GTV
6V6GY
5871
7408
Replace
with
6W4GTA
6AS4GT
6AX4GT
6AX4GTA
6AX4GTB
6DM
6DMA
6DM4
6DM4A
Q4
l6D
6DT4
6U4GT
16AX4GT
6AX4GTA
6N3
6SD7
6SE7
Tube
Number
r 6AS4GT
6KV8
6LY8
l6AW8
6AW8A
6JV8
6KS8
Replace
with
6SH7
1612
1 1620
6LF8
6LY8
I
I
7AB7
7AG7
7AH7
7AJ7
7AN7
7AU7
7B7
7C4
-
1204
7AH7
7AG7
1 7B7
1273
7EK7
6AU7
7AH7
1203
1 1203A
Tube
Number
70J8
7E5
7E7
7EK7
7ES8
7FC7
7G7
7H7
Replace
with
7ES8
1201
7R7
7AN7
70J8
7EK7
FV7
1232
FA7
7A7LM
7HG8
8HG8
7J7
7R7
7S7
7V7
7X7
7S7
7E7
7J7
7G7
XXFM
8A8
8AU8
8AW8A
r
A8
9EA8
9U8
9U8A
18AU8A
8AW8A
8BA8A
8BH8
r
AU8
8AU8A
8BA8A
l8BH8
8N8
8BA8A
8BH8
8CX8
8EB8
8GJ7
8GN8
Tube
Number
8GX7
8HG8
8JE8
8N8
Replace
with
r
CX8
8EB8
8GN8
IOJA8
8KS8
j8AU8
8AU8A
8AW8A
8N8
9A8
9EA8
r
A8
9EA8
9U8
9U8A
9U8
19U8A
8A8
9A8
9EA8
9U8A
9EA8
9A8
~ 9U8
9U8A
9U8
~ 9U8A
9A8
100R7
~ IOFD7
IOFR7
lOEB8
)IOGN8
IOHF8
IOJA8
JY8
rOIOLl8
lUE8
CX8
8EB8
8JE8
IOJY8
IOKR8
18AU8
8AU8A
8AW8A
8BH8
CX8
8GN8
8JE8
8GX7
IOns
9U8A
IOEW7
EB8
8GN8
8JE8
IOHF8
fOEB8
IOGN8
lOJA8
llOJY8
IOLl8
iUE8
~8AW8A
8KS8
100E7
r
r
r
r
Replace
with
8GJ7
7HG8
8KS8
AU8
8AU8A
8AW8A
8BA8A
Tube
Number
IOEG7
IOEM7
IOF07
lOFR7
lOEM7
lOEG7
lOFR7
lOFD7
IOGN8
fOEB8
IOHF8
IOJA8
JY8
rO lOLl8
lUE8
IOLB8
IOLW8
IOLl8
IOGN8
fOE"
IOHF8
IOJY8
llJE8
fOKRa
lOLB8
IOLW8
llKV8
llLQ8
fOEB8
lOGN8
IOHF8
llOJA8
IOLl8
lUE8
{"m
IOLB8
IOLW8
llKV8
llLQ8
{"JT8
lOKR8
IOLW8
llKV8
llLQ8
fOJT8
IOKR8
IOLB8
llKV8
llLQ8
IOGN8
fOE"
IOHF8
IOJY8
lUE8
lIC5
120M5
lUE8
~lOEB8
IOGN8
IOHF8
llOJA8
IOJY8
IOLl8
Tube
Number
llKV8
llLQ8
Replace
with
em
em
10KR8
10LB8
lOLW8
llLQ8
10KR8
10LB8
10LW8
llKV8
12A6
12AD6
5659
12AG6
12AE6
~ 12AE6A
12FT6
12AE6A
~ 12AE6
12FT6
12AElO
12AF3
12AF6
12AG6
13V10
12BR3
12BL6
12AD6
12AT6
12AT6A
12AU6
I
Replace
with
12AT6
f"SA
12AT6A
12BE6
~ 12BE6A
12CS6
12BK6
12BT6
12BF6
12BU6
12AV6A
12AT6A
12BH7
~12BH7A
6913
12AX4GT
f2AX4GTA
12AX4GTB
12D4
12D4A
{ 12DM4
12DM4A
12DQ4
Replace
with
12AV6
f2AX4GTB
12D4
12D4A
12AX4GTA
( 12DM4
12DM4A
12DQ4
12AX4GTB
12AV6A
12BK6
12BT6
12AV6A
12AX7
6060
6201
j12DM
12DM4
12DM4A
12DQ4
12AX7A
12DF7
12DT7
5721
6057
6681
7025
7025A
7494
7729
{6671
6679
7492
7728
12AY3
f2AY3A
12BS3
12BS3A
f2AU6A
12BA6
12BA6A
12AY3A
2AY3
12BS3
f 12BS3A
12B7
~14A7
14H7
12AU6A
12BA6A
12AU7
12AU7A
12AU7W
12AU7WA
5963
6067
6189
6680
7316
7489
7730
I
Tube
Number
Tube
Number
fATSA
12AV6
f'A12AT7WB
TlWA
12AT7
i
12BA6
12BA6A
12BD6
f2BA6A
12AU6
12AU6A
12AU6A
~ 12BAG
12BA6A
12BK6
fAT6
12AT6A
12AV6
12BL6
12AF6
12BQ6GT
12AV6A
12BT6
f2BQ6GA
12BQ6GTA
12BQ6GTB
12CU6
{ 12DQ6
12DQ6A
12DQ6B
f2BQ6GA
12BQ6GTB
12CU6
12DQ6
12BQ6GTA
{12DQ6A
12DQ6B
12GW6
12BQ6GTB
12BT6
{''12DQ6
U6
12DQ6A
12DQ6B
12GW6
f1ATS
12AT6A
12AV6
12AV6A
12BK6
12BU6
12BF6
12BV7
2BY7
12BY7A
f 12DQ7
12BY7
12BY7A
{'12BV7
2BY7A
12DQ7
7733
8448
12DQ7
12C5/12CU5 f2C5
12CU5
12R5
Tube
Number
Replace
with
12CA5
12CS5
12EH5
12DW5
12CS6
~ 12BE6
12BE6A
12CU6
f2BQ6GTB
12BQ6GTB/12CUG
12DQ6
l12DQ6A
12DQ6B
12GW6
12CX6
12D4
12D4A
12DF7
r
12EZ6
4A
12AX4GTB
12DM4
12DM4A
12DQ4
f2DM4
12DM4A
12DQ4
{'lAX)
12AX7A
12DT7
7025
7025A
12DM4
f2DM4A
12D4A
12DQ4
12DM5
llC5
12DQ6
f2DQ6A
12DQ6B
12GW6
12DQ6A
~12DQ6B
12GW6
12DQ6B
12DQ7
12GW6
12BY7A
12DTl
fAX)
12AX7A
12DF7
7025
7025A
12DW7
7247
12DZ6
~12EA6
12EK6
12E5
12J5
Tube
Number
Replace
with
I
Tube
Number
14J7
Replace
with
14S7
12EA6
~ 12DZ6
12EK6
12ED5
12FX5
14JG8
~ 14GT8
14GT8A
12EH5
12CA5
12EK6
~ 12DZ6
12EA6
12EN6
~ 12L6GT
12W6GT
12EZ6
12FK6
12FM6
12CX6
12FM6
12FK6
14R7
14S7
15AB9
15AFll
15BDll
15EA7
16A5
14E7
14J7
17AB9
15BDll
15AF11
13EM7
15CW5
17A8
~ 19EA8
19EA8A
12FT6
~ 12AE6
12AE6A
17AB9
17AX3
15AB9
17BE3
12FX5
12G4
12GW6
12ED5
12H4
12DQ6B
12L6GT
~ 12EN6
12W6GT
12L8
12SA7
12SC7
12SK7
12SN7
12SR7
12SW7
12SX7
12SY7
1644
12SY7
1634
5661
12SX7
12SW7
12SR7
12SN7
12SA7
12W6GT
~ 12EN6
12L6GT
13DE7
15EW7
13DR7
~ 13FD7
13FR7
13EM7
13FD7
13FR7
13V10
15EA7
13FR7
13FD7
12AElO
17AX4GT
17AX4GTA
f7AX4GTA
17D4
17D4A
f7OM4
17DM4A
17DQ4
1704A
CD<
17OM4
17OM4A
17DQ4
17AY3
f7AY3A
17BS3
17BS3A
17AY3A
7AY3
17BS3
f 17BS3A
17BQ6GTB
Q6
j17O
17OQ6A
17OQ6B
17GW6
17BZ3
~ 17BE3
17BE3A
14A7
~ 12B7
14H7
17C5
~ 17CU5
17R5
14AF7
14C7
14E7
XXD
1280
14R7
17CQ4
17OE4
14GT8
f4GT8A
14JG8
7724
14H7
~ 12B7
14A7
17CU5
1704
~ 17C5
17R5
{'7D4A
17AX4GTA
17OM4
17DM4A
17DQ4
I
Tube
Number
17D4A
Replace
with
f7DM4
17DM4A
17DQ4
17DE4
17CQ4
17DM4
f7DM4A
17D4A
17DQ4
17DQ6
f7DQ6A
17DQ6B
17GW6
17DQ6A
117DQ6B
17GW6
17DQ6B
17GW6
17L6GT
17W6GT
17GW6
17DQ6B
17W6GT
17L6GT
18FW6
f8FW6A
18GD6
18GD6A
18GD6A
I
I
I
i
i
I
I
19EW7
20EW7
!
19JN8
119CL8A
19CL8B
19T8
119T8A
19C8
19Y3
20EW7
21A6
21B6
19X3
19EW7
21B6
21A6
21EX6
25AX4GT
25B6G
25CD6GB
25D4
5824
{'SSQ6GTB
25BQ6GTB/25CU6
25CU6
25DQ6
25DQ6A
25BQ6GA
25BQ6GTB
125BQ6GTB/25CU6[
25CU6
25DQ6
25DQ6A
25CA5
25C5
1 25EH5
f8GD6A
18FW6
18FW6A
18FW6A
25CD6G
f5CD6GA
25CD6GB
25DN6
21EX6
f8GE6A
18FY6
18FY6A
25CD6GA
f5CD6GB
25DN6
)1 EX6
18GE6A
18FY6A
25CD6GB
21EX6
19AU4
j19AU4GT
19AU4GTA
17CQ4
. 17DE4
18FW6A
18FY6
18FY6A
18GD6
18GD6A
18GE6
19AU4GT
19C8
19CL8A
f8FY6A
18GE6
18GE6A
18GE6A
119AU4
19AU4GTA
17CQ4
17DE4
19T8
1 19T8A
119CL8B
19JN8
19DE7
~ 19EW7
20EW7
19EA8
119EA8A
17A8
I
Replace
with
Tube
Number
25CU6
1
25BQ6GTB/25CU6
25BQ6GTB
25DQ6
25DQ6A
25DN6
125CD6GB
21EX6
25EC6
125CD6GB
21EX6
25EH5
25CA5
I
I
Tube
Number
Replace
with
25U4GT
f5AX4GT
25D4
25W4GT
25W4GT
f5AX4GT
25D4
25U4GT
25W6GT
125L6GT
6046
25Y5
25Z5
26A6
26B6
26CG6
26D6
27
27GB5
28GB5
28HD5
30A5
30HD5
32
32ET5
32ET5A
32L7
25Z5
25Y5
26CG6
26D6
26A6
26B6
56
28GB5
27GB5
30HD5
35C5
1 35C5A
r
28HD5
1A4P
1A4T
1B4
{ 1B4P
1B4T
34
951
f2ET5A
34GD5
34GD5A
34GD5A
25A7
fA<
34
1A4P
1A4T
1B4
fB4P
1B4T
32
951
34CE3
25L6GT
125W6GT
6046
34GD5
25S
f5 IB5
1B5/25S
34GD5A
35A3
35C3
34CD3
f4GD5A
32ET5
32ET5A
32ET5A
35C3
35A3
Tube
Number
37
38HK7
~ 35C5A
30A5
76
38HE7
39
~ 39/44
44
39/44
p9
44
35C5
40Z5GT
45Z5GT
p9
39/44
50CA5
~ 50EH5
50EH5A
50EH5
~ 50EH5A
50CA5
50HK6
50Y7
50Z6
50HC6
56
76
77
78
80
81
83
117L7
117N7
807
CK1005
I
i
45Z5GT
40Z5GT
44
son
I
Replace
with
Tube
Number
CK1013
1201
1203
1204
1206
1221
1223
1229
1230
1231
1232
1267
1273
1274
1275
i
son
50AX6
50Y7
27
37
6C6
606
r
X3
13
83V
88
1280
1284
1291
1294
1299
1612
1614
1620
1634
1644
5517
5590
5591
5608-A
p6
16B
5Z3. 80
117M7
117P7
5933
~OY4
OZ4A
Directly
Replace
with
5517
7E5
7C4
7AB7
768
6C6
6J7
1M
30
7V7
7G7
OM
7A7
6X5
fX3
80
83
14H7
12B7
3B7
1R4
306
6L7
6L6
6J7
12SC7
12L8
CK1003
f591
9001
9003
~ 6AJ5
6AK5
5672
5678
5678
5672
5691
~ 6SN7
5692
5692
5693
5725
5731
5824
5881
5910
5915
6080
7025
7247
7408
Replace
with
~ 5691
6SN7
6SJ7
~ 6AJ5
6AK5
955
J 25B6
25A6
25C6
25L6
f6L6GC
7581
l7581A
1U4
6BE6
6AS7
f02SA
12AX7
12AX7A
120F7
120T7
120W7
6V6
7543
~ 6AU6
6AU6A
7581
~ 7581A
6L6GC
3C6
14AF7
7X7
7M
XXB
XXO
XXFM
XXL
5590
53
5654
Tube
Number
X155
fBC8
6BQ7
6BQ7A
{"sa
6Bn
6BX8
6BZ8
Interchangeable
Tubes
Foreign to American Tubes
Foreign Tube
Number
1C1
1C2
1C3
Replace with
American Tube
IRS
1AC6
1AB6
Foreign Tube
Number
1013
1Fl
1F2
Replace with
American Tube
Foreign Tube
Number
Replace with
American Tube
1A3
1AJ4
1L4
1F3
1FD1
1FD9
IT4
1AH5
lS5
Continued on page 61
Directly Interchangeable
Tubes-(Continued)
Foreign to American
Foreign Tube
Number
Reploce with
American Tube
IH33
IH35
IPI
IPI0
IPll
IRK23
30-HH13
3M-R24
3M-V7
4R-HH2
4R-HH8
4Y25
5M-HH3
5P29
5R-HPl
5S1
5lIO
6/30L2
6ATlN
6832
68C32
6Cl2
6Cl6
6Cl8
6CClO
6CC31
6CC342
6CF8
602
6FlO
6Fl2
6Fl6
6FI8
6Fl9
6F21
6F22
6F23
6F24
6F25
6F26
6F29
6F30
6F31
6F33
6F35
6F36
6FD12
6G-83A
6G-86
6G-89
6G-K17
6H31
6LlO
6Ll2
6Ll3
6L31
6L34
IAQ5
IA86
3C4
3S4
3V4
lS2
3FX7
30K6
38Z6
48S8
4KN8
807
5J6
6CN6
48L8
807
5U4G
6GA8
60T8
6AL5
6AV6
6AJ8
68L8
6GV7
5692
6J6
5670
6267
6AL5
6AC7
6AM6
6CJ5
6EC7
68Y7
6CQ6
6267
6EL7
6EJ7
6EH7
68Y7
6EH7
6EJ7
68A6
6AS6
6AJ5
6AH6
60C8
6GW6
68Q6GT
60Q6A
6AU4GT
68E6
6AG7
6AQ8
12AX7
6AQ5
6AQ4
Foreign Tube
Number
6L43
6L03
6LOl2
6L013
6LPl2
6M-Hl
6M-HH3
6P9
6P15
6P17
6R-HH2
6R-HH8
6R-R8C
6S5G
6Z4
6Z31
709
7010
7F16
803
805
806
807
808
8R-HPl
906
9P9
IOCl4
IOFl8
IOL03
10L013
10P18
10PLl2
128C32
12E13
12F31
12G-83
12G-86
12G-K17
12H31
12R-K19
1302
1303
17N8
18AK5
19AJ8
1980
19M-R9
19SU
19U3
19W3
2003
2004
25G-86
30Cl
30C15
30C18
Tubes
Replace with
American Tube
6CL6
6CV7
6AK8
6807
68M8
6J4
6J6
68M5
68Q5
6AM5
68S8
6KN8
5847
6E5
68X4
6X4
6AM5
6CH6
6CJ5
6AM6
68R7
68W7
68S7
6267
6CQ6
6CQ6
98M5
1908
13EC7
14L7
14G6
4585
508M8
12AV6
6550
128A6
12GW6
128Q6GT
1204A
128E6
128R3
6SN7GT
6158
17C8
6028
1908
19X3
18G06
19Y3
19X3
19X3
12AH8
6AJ8
258Q6GT
9A8
9EN7
7GV7
Foreign Tube
Number
30F5
30FLl
30Ll
30Ll5
30P4
30P12
30P16
30P18
30P19
30PLl
30PLl2
30PLl3
52KU
6200T
62TH
62VP
63TP
64ME
64SPT
65ME
66KU
67PT
108CI
121VP
14lDOT
14lTH
150C2
150C3
163PEN
17lDOP
213PEN
311SU
451PT
A863
A1834
AD
836
863
8152
8309
8319
8329
8339
8349
8719
8729
8739
8749
8759
8F61
8F451
8PM04
01C
02C
02M9
03F
063
Replace with
American Tube
7E07
9G88
7AN7
7EK7
25GF6
12F85
16A5
15CW5
25GF6
13GC8
16A8
16GK8
5Z4G
6CV7
6CU7
6CJ5
6A88
6C07
68X6
68R5
68T4
6CK5
082
12AC5
14L7
14K7
OA2
003
16A5
17C8
21A6
31A3
45A5
6J7GT
6AS7G
6Z3
12SN7GT
6A6
12AT7
12ATl
7AN7
12AU7
12AX7
7EK7
6AQ8
6GA8
12ATl
12AU7
12AX7
6CK5
45A5
6AQ5
957
958A
6AL5
959
6H6
Directly Interchangeable
Tubes-(Continued)
Foreign to American
Foreign Tube
Number
Foreign Tube
Number
Reploce with
American Tube
Tubes
Replace with
American
Tube
I
Foreign Tube
Number
Replace with
American
Tube
I
D77
DI52
D717
DA90
DAC32
DAF91
DAF92
DAF96
DC80
DCC90
DCF60
DD6
DD7
DDR7
DF33
DF60
DF62
DF67
DF91
DF92
DF96
DF97
DF904
DH63
DH74
DH76
DH77
DH81
DH118
DH119
DHI42
DHI49
DHI50
DH718
DH719
DK32
DK91
DK92
DK96
DL29
DL31
DL33
DL35
DL36
DL67
DL91
DL92
DL93
DL94
DL95
DL96
DL98
DM70
DM71
DY30
DY51
DP61
6AL5
6AL5
6AL5
IA3
IH5GT
IS5
1U5
IAH5
IE3
3A5
IV6
6AL5
6AM5
6AM5
IN5GT
5678
IAD4
5911
IT4
IL4
IAJ4
IAN5
IU4
6Q7
12Q7GT
12Q7GT
6AT6
7B6
14L7
14G6
14L7
7C6
6CV7
6CV7
6AK8
IA7GT
IR5
IAC6
IAB6
3D6
IA5
3Q5GT
IC5GT
IQ5GT
5913
IS4
3S4
3M
3V4
3Q4
3C4
3B4
1M3
IN3
IB3GT
IBG2
6AK5
I
I
I
DY70
DY80
DY86
DY87
ElF
E2F
E55L
E80CC
E80F
E80L
E80T
E81CC
E81L
E82CC
E88C
E88CC
E90C
E90CC
E91H
E95F
E180F
EI80L
El82CC
EI86F
El88CC
E280F
E288CC
EAA91
EABC80
EAF42
EB91
EBC41
EBC81
EBC90
EBC91
EBF80
EBF81
EBF83
EBF85
EBF89
EC55
EC80
EC81
EC84
EC86
EC88
EC90
EC91
EC92
EC94
EC95
EC97
EC900
ECIooo
ECC70
ECC81
ECC82
5642
IX2A
IS2
IS2A
954
956
8233
6085
6084
6227
6218
6201
6686
6189
8255
6922
5920
5920
6687
5654
6688
7534
7119
7737
7308
7722
8223
6AL5
6AK8
6CTl
6AL5
6CV7
6BD7
6AT6
6AV6
6N8
6AD8
6DR8
6DC8
6DC8
5861
6Q4
6R4
6AJ4
6CM4
6DL4
6C4
6AQ4
6AB4
6AF4
6ER5
6FY5
6HA5
8254
6021
12ATl
12AU7
i
I
I
I
I
ECC83
ECC84
ECC85
ECC86
ECC88
ECC89
ECC91
ECCI80
ECCI86
ECCI89
ECC230
ECC804
ECC813
ECF80
ECF82
ECF86
ECF801
ECF802
ECF805
ECH42
ECH80
ECH81
ECH83
ECH84
ECL80
ECL82
ECL84
ECL85
ECL86
EF41
EF71
EF72
EF80
EF81
EF82
EF83
EF85
EF86
EF87
EF89
EF89F
EF91
EF92
EF93
EF94
EF95
EF96
EF97
EF98
EFI83
EFI84
EFI90
EF730
EF731
EF732
EF734
EF811
12AX7
6CW7
6AQ8
6GM8
6DJ8
6FC7
6J6
6BQ7A
12AU7
6ES8
6080
6GA8
6463
6BL8
6U8
6HG8
6GJ7
6JW8
6GV7
6CU7
6AN7
6AJ8
6DS8
6JX8
6AB8
6BM8
6DX8
6GV8
6GW8
6CJ5
5899
5840
6BX6
6BH5
6CH6
6BK8
6BY7
6267
6267
6DA6
6DG7
6AM6
6CQ6
6BA6
6AU6
6AK5
6AG5
6ES6
6ET6
6EH7
6EJ7
6CB6.
5636
5899
5901
6205
6EH7
Directly Interchangeable
Tubes-(Continued)
Foreign to American Tubes
Foreign Tube
Number
Replace with
American Tube
Foreign Tube
Number
Replace with
American Tube
,
Foreign Tube
Number
Replace with
American Tube
,
EF812
EF814
EF905
EH90
EK90
EL34
EL36
EL37
EL38
EL41
EL71
EL80
EL81
EL82
EL83
EL84
EL85
EL86
EL90
EL91
EL95
ELl80
ELSOO
EL820
EL821
EL822
ELL80
EM34
EM80
EM81
EM84
EM87
EM840
EQ80
EY51
EY80
EY81
EY81F
EY82
EY84
EY86
EY87
EY88
EZ35
EZ40
EZ80
EZ81
EZ90
EZ91
EZ900
GZ30
GZ34
H63
HAA91
HABC80
HBC90
HBC91
6EL7
6EJ7
5654
6CS6
6BE6
6CA7
6CM5
6L6
6CN6
6CK5
5902
6M5
6CJ6
6DY5
6CK6
6BQ5
6BN5
6CW5
6AQ5
6AM5
60L5
12BY7
6GB5
6CK6
6CH6
6CH6
6HU8
6C07
6BR5
6DA5
6FG6
6HU6
6FG6
6BE7
6X2
6U3
6R3
6V3
6N3
6374
6S2
6S2A
6AL3
6X5G
6BT4
6V4
6CM
6X4
6AV4
6063
5Z4G
5AR4
6F5GT
12AL5
19T8
12AT6
12AV6
,
I
t
,
i
I
i
I
i,
i
I
HCC85
HCH81
HD14
HF61
HF93
HF94
HF121
HK90
HL90
HL92
HL94
HM04
HP6
HY90
KD21
KD24
KC25
KT32
KT63
KT66
KT71
KT77
KT88
KTZ63
L63
L77
LC900
LCF80
LCF802
LF183
LFl84
LL505
LN119
LN319
LN152
LZ319
LZ329
N14
N15
N16
N17
N18
N19
N25
N77
N78
N1l9
N142
N144
N150
N152
N153
N154
N308
N309
N329
N359
17EW8
12AJ7
IH5GT
6eJ5
12BA6
12AU6
12AC5
12BE6
19AQ5
50C5
30A5
6BE6
6AM6
35W4
OA3
OC3
003
25W6GT
6F6G
6L6GC
50L6GT
6CA7
6550
6K7GT
6J5
6C4
3HA5
6LN8
6LX8
4EH7
4EJ7
27KG6
50BM8
13GC8
6AB8
9A8
9A8
lC5GT
3Q5GT
3Q5GT
3S4
3Q4
3V4
3C4
6AM5
6BJ5
45B5
45A5
6AM5
6CK5
21A6
15A6
16A5
25E5
15A6
16A5
21A6
,
I
I
N369
N379
N709
N727
OBC3
OFl
OF5
OH4
OSW2190
OSW2192
OSW2600
OSW2601
OSW3104
OSW3105
OSW3107
OSW3109
OSW3110
OSW31l1
OSW3112
P17A
PABC80
PC86
PC95
PC900
PCC84
PCC85
PCC88
PCC89
PCC186
PCC189
PCC805
PCE800
PCF80
PCF82
PCF86
PCF800
PCF801
PCF805
PCF806
PCL82
PCL84
PCL85
PCL800
PF9
PH4
PL36
PL81
PL82
PL83
PL84
PL302
PL500
PL505
PL820
PLl267
PLL80
PM04
16A8
15CW5
6BQ5
6AQ5
12SQ7
6S7
12K4GT
12A8
6AC7
6AG7
6AC7
6AG7
6SA7
6SQ7
5CG4
6H6
6E5
6SK7
6J5
807
9AK8
4CM4
4GK5
4HA5
7AN7
9AQ8
7DJ8
7FC7
7AU7
7ES8
7EK7
9GB8
9A8
9U8
7HG8
9EN7
8GJ7
7GV7
8GJ7
16A8
150Q8
18GV8
16GK8
6K7
6A8
25E5
21A6
16A5
15A6
15CW5
25GF6
27GB5
40KG6
21A6
OMG
12HU8
6BA6
Directly Interchangeable
Tubes-(Continued)
Foreign to American
Foreign Tube
Number
Replace with
American Tube
PM07
PY80
PY81
PY82
PY83
PY88
PY800
PY80l
QB65
QB309
QE06/50
QL77
QV05-25
QW77
QZ77
R12
R16
R19
R52
R144
RL21
S6Fl2
SP6
STVI08/30
STV150/30
SU61
T2M05
TMI2
U25
U26
U37
U41
U43
U49
U50
U52
U70
U76
U77
U1l9
UI42
UI47
U149
U150
U151
U152
U153
U154
UI9I
UI92
UI93
U251
U309
U319
U339
U381
U707
6AM6
19X3
17Z3
19Y3
17Z3
30AE3
17Z3
17Z3
6SN7GT
12AT7
807
6C4
807
6CQ6
6AM6
6X2
lT2
lX2A
5Z4G
6AM6
2D21
6AM6
6AM6
OB2
OA2
6X2
6J6
6J4
2L2
2J2
lT2
IB3GT
6X2
2J2
5Y3GT
5U4G
6X5G
35Z5GT
5AR4
38A3
31A3
6X5G
7Y4
6BT4
6X2
I9X3
I7Z3
I9Y3
I9CS4
19Y3
I7Z3
17Z3
19X3
I9Y3
19C54
38A3
6X4
I
I
i
I
Foreign Tube
Number
UAF42
UBC41
UBC81
UBF80
UCH42
UCH81
UCL82
UF41
UL41
UL84
UN954
UN955
UU12
UY41
UY42
UY82
UY85
UY89
V2M70
V61
V177
V311
V312
V884
VP6
VP12D
WI7
W25
W6I
W63
W76
W77
W8I
W1l9
W142
W148
W149
W719
W727
W739
WD142
WD150
WD709
X14
X17
XI8
X20
X25
X61M
X63
X64
X77
X8I
X1l9
X142
XI47
X148
Tubes
I
Foreign Tube
Repalce with
Number
American Tube .
12S7
14L7
14G6
17C8
14K7
19D8
50BM8
12AC5
45A5
45B5
954
955
6CA4
31A3
31A3
55N3
38A3
38A3
6X4
6BT4
6CQ6
31A3
31A3
6CQ6
6CQ6
12C8
IT4
IAJ4
6K7
6K7
12K7
6CQ6
7A7
mC7
12AC5
7A7
7B7
6BY7
6BA6
6EC7
12S7
6CT7
6N8
lA7GT
IR5
lAC6
IAC6
lAB6
6E8G
6A8
6L7
6BE6
7S7
19D8
I4K7
6E8G
7S7
I
X719
X727
XC95
XC97
XC900
XCC82
XCC189
XCF80
XCF801
XCH81
XCL82
XCL85
XF80
XF85
XF183
XF184
XL36
XL84
XL86
XY88
Y25
YC95
YC97
YF183
YF184
Zl4
Z63
Z77
Zl52
Z300T
Z319
Z329
Z719
Z729
Z749
ZD17
ZD25
ZD152
Replace with
American Tube
6AJ8
6BE6
2ER5
2FY5
2HA5
7AU7
4ES8
4BL8
4GJ7
3AJ8
8B8
9GV8
3BX6
3BY7
3EH7
3EJ7
13CM5
8BQ5
8CW5
16AQ3
1M3
3ER5
3FY5
4EH7
4EJ7
IN5GT
6J7
6AM6
6BX6
OA4G
6351
7ED7
6BX6
6267
6EL7
lS5
lAH5
6N8
I
See Pages 65 to 70
for Listing of
American to Foreign
Directly Interchangeable
Tubes.
I
Directly Interchangeable
American
American Tube
Number
OA2
Replace with
Foreign Tube
115OC2
150C4
M8223
STV150/30
OA3
KD21
OMG
~ PLl267
Z300T
to Foreign Tubes
I American
Tube
Number
IE3
Replace with
Foreign Tube
I
IH5GT
~ DAC32
HDI4
i
IL4
pF2
DF92
r
r
M70
DM71
Y25
IN3
OD3
~ 150C3
KD25
IN5GT
~ DF33
Z14
OE3
OG3
85AI
85A2
IQ5GT
DL36
IA3
~ID13
DA90
lA5G
DL31
lA7GT
~ DK32
X14
OC3
lAB6
lAC6
lAD4
KD24
r
r
C3
IH35
DK96
X25
1M3
lR5
lR5SF
lS2
lS2A
lS4
IH33
fRK23
DY86
DY87
DY87
DL91
fF09
DAF91
lD17
DF62
1T2
~ R16
U37
lAJ4
fFlDF96
W25
IU4
IU5
IV6
lAN5
lAQ5
DF97
IH33
IB3GT
~ DY30
U41
lC5GT
fCIDK91
X17
lS5
IT4
IBG2
M70
DM71
Y25
C2
DK92
X18
X20
fFDl
DAF96
lD25
lAH5
DY51
~ DL35
N14
American Tube
Number
DC80
r
OB2
08CI
M8224
STVI08/30
Tubes
fF3DF91
W17
DF904
DAF92
DCF60
lX2A
~ DY80
R19
2D21
f91N
EN91
M8204
PL21
2ER5
XC95
2FY5
2HA5
Replace with
Foreign Tube
XC97
XC900
I
;
2J2
~ U26
U49
i
!
2L2
3M
U25
DL93
3A5
3AJ8
3AL5
3AU6
3B4
3BX6
3BY7
3Bl6
DCC90
XCH81
XAA91
XF94
DL98
XF80
XF85
3M-V7
3C4
3D6
3DK6
3EH7
3EJ7
3ER5
3FX7
3FY5
3HA5
3Q4
fPIDL96
N25
DL29
3M-R24
XFl83
XFl84
YC95
3D-HH13
YC97
LC900
~ DL95
NI8
3Q5GT
r
3S4
fPIO
DL92
N17
3V4
fPllDL94
N19
4BL8
~ 5R-HPl
XCF80
4BS8
4CM4
4R-HH2
PC86
L33
N15
NI6
4EH7
~ LF183
YFl83
4EJ7
f YF184
LF184
Directly Interchangeable
Tubes-(Continued)
American to Foreign Tubes
American Tube
Number
Replace with
Foreign Tube
American Tube
Number
Replace with
Foreign Tube
' American Tube
Number
,
Replace with
Foreign Tube
!
4ES8
4GJ7
4GK5
4HA5
4KN8
XCCI89
XCF801
PC95
PC900
4R-HH8
5AR4
52KU
53KU
54KU
GZ30
GZ32
GZ33
GZ34
GZ37
R52
U54
5AW4
5AX4GT
5CG4
U54
U54
OSW3107
5J6
5M-HH3
5T4
5U4G
5V4G
5W4
5Y3GT
1 GZ31
U52
fZlO
GZ32
U52
52KU
53KU
54KU
GZ30
GZ32
GZ33
GZ34
OSW3107
R52
U54
1 U50
U51
B63
6A8
1 PH4
X63
6AB4
EC92
6AB8
f3TP
ECL80
LNI52
6AC7
i
6AD8
6AF4
6AG5
53KU
54KU
GZ30
GZ32
GZ33
GZ34
OSW3107
R52
U54
Ull
l
fFlO
OSW2190
OSW2600
EBF81
EC94
EF96
f'11
I
6AM5
i
6AG7
6AH6
6AJ4
6AJ5
6AJ7
fUO
OSW2192
OSW2601
I
I
6AM6
i
fFIO
OSW2190
OSW2600
r
EF91
p6
M8083
PM07
QA2403
QZ77
RI44
S6Fl2
SP6
l Z77
I
I
I
6F36
EC84
6F35
709
DD7
DDR7
( EL91
Nll
NI44
QA2402
r 8D3
6Fl2
I
I
6AN7
ECH80
6AQ4
fL34
EC91
M8099
I
6AJ8
CI2
20D4
ECH81
X719
r
6ZQ5
f'
6AK5
fP61
E95F
EF905
6AQ8
fU2B719
ECC85
6AK8
fLDI2
DH719
EABC80
6AS6
IM8196
6AL3
EY88
6AS7G
1 AI834
ECC230
6AT6
1 DHll
EBC90
6B32
6D2
D2M9
U50
j"'u
524
6A6
Dll
6AL5
DI52
D7l7
DD6
EAA91
EAA901
EAA90lS
EB91
M8079
M8212
QA2404
6AU4GT
6AU6
6AV4
6AV6
6BA6
BPM04
EL90
M8245
N727
\ 6F33
6G-K17
EF94
EZ91
16BC32
EBC~I
{"31
EF93
M8101
PM04
W727
Directly Interchangeable
American
American Tube
Number
6BD7
6BE6
Replace with
Foreign Tube
1EBC81
EBC80
{'"'I
EK90
HM04
X77
X727
6BE7
6BH5
6BH6
6BJ5
6BJ6
6BK8
EQ80
EF81
E90F
N78
E99F
EF83
6BL8
6C16
ECF80
1
6BM5
6P9
6BM8
16LP12
ECL82
6BN5
EL85
6BQ5
16Pl5
E84L
EL84
N709
I
to Foreign Tubes
American Tube
Number
6C4
6CM
6CA7
6CB6
6CD7
6CF6
6CH6
6CJ5
6CJ6
Tubes-(Continued)
Replace with
Foreign Tube
r
L77
M8080
QA2401
QL77
1EZ81
UU12
{"II
12El3
EL34
KT77
KT88
EFI90
I American
Tube
Number
Replace with
Foreign Tube
6CS6
EH90
6CT7
1WDl50
EAF42
6CU7
\ 62TH
ECH42
ECH43
ECHll3
1
6CV7
fLD3
62DDT
DH150
6CW5
6CW7
6DA5
6DA6
EL86
ECC84
EM81
EF89
r
6DC8
fFDl2
EBF85
EBF89
6DG7
EF89E
6DJ8
1 ECC189
ECC88
6DL4
6DL5
6DQ6A
6DR8
6DS8
6DT8
6DX8
6DY5
EC88
EL95
6G-B9
EBF83
ECH83
6ATlN
ECL84
EL82
64ME
1EM34
EFI90
~7D1O
EF82
EL821
. EL822
7FI6
62VP
EF41
HF61
1EL820
EL81
DH718
EBC41
6BQ6GT
6BQ7A
6G-B6
ECC180
6BR5
65ME
EM80
6CK5
167PT
BF61
EL41
Nl50
8D5
8D7
6R-HH2
6CK6
1 EL83
EL820
6CL6
6CM4
6L43
EC86
6E5
6CM5
G B7
f EL36
EL360
6E8G
1 X61M
X147
6CN6
1EL38
6EC7
1W739
6EH7
16F25
6F29
EFI83
EF811
6EJ7
16F24
6F30
EFI84
EF814
6BR7
6BS7
6BS8
1
6BT4
f6KU
EZ40
Ul50
V61
6BW7
6BX4
806
6Z4
6BX6
4SPT
EF80
Zl52
f Z719
6BY7
16F19
6F26
EF85
W719
6CQ6
5P29
6F21
9D6
EF92
M8161
QA2400
QW77
V 177
V884
VP6
W77
6S5G
1 OSW3110
6F18
Directly Interchangeable
American
American Tube
Number
6EL7
6ER5
6ES6
6ES8
6ET6
6F5GT
6F6G
6FC7
Replace with
Foreign Tube
fF23
EF812
Z749
EC95
EF97
ECC189
EF98
H63
KT63
ECC89
6FG6
~ EM84
EM840
6FY5
EC97
6GA8
3OL2
f/ B729
ECC804
6GB5
6GJ7
6GM8
EL500
ECF801
ECC86
6GV7
ECF805
16C18
6GV8
6GW8
ECL85
ECL86
6H6
~ D63
OSW3109
6HA5
6HG8
6HU6
6HU8
EC900
ECF86
EM87
ELL80
to Foreign Tubes
American Tube
Number
6JW8
6JX8
Tubes-(Continued)
Replace with
Foreign Tube
ECF802
ECH84
6X4
6K7
6KN8
6L6
6L6GC
6L7
6LN8
6LX8
6M5
6N3
6N8
6Q4
6Q7
6R3
6R4
6S2
6S2A
6S7
6SA7
6SK7
6SN7GT
6SQ7
6T8
fF9W61
W63
6R·HH8
EL37
KT66
X64
LCF80
LCF802
EL80
EY82
fBF80
WD709
ZD152
EC80
DH63
EY81
EC81
EY86
EY87
OF!
OSW3104
OSW3111
113D2
B65
QA2408
QB65
OSW3105
fLD12
DH719
EABC80
6J4
fM.Hl
M8232
TM12
6U3
EY80
6J5
~ L63
OSW3112
6U8
1ECF82
ECF80
fC3!
6V3
6V4
EY81F
EZ80
6J6
6M·HH3
ECC91
M8081
T2M05
6X2
6J7
~ A863
Z63
American Tube
Number
fYl!
R12
SU61
U43
U151
Replace with
Foreign Tube
fZ31
EZ90
EZ902
( EZ900
U707
V2M70
6X5G
1U147
EZ35
7A7
1 W81
W148
7AN7
rOllB319
PCC84
7AU7
1 XCC82
PCC186
7B5
fL22
KT81
N148
7B6
1DH81
DL82
7B7
W149
7C5
fL22
KT81
N148
7C6
7DJ8
DH149
PCC88
7ED7
3OF5
1Z329
7EK7
rOLlS
B349
PCC805
7ES8
7FC7
PCC189
PCC89
7GV7
~ 30C18
PCF805
7HG8
PCF86
7S7
1X81
X148
7Y4
U149
Directly Interchangeable
American
American Tube
Number
8A8
8B8
Replace with
Foreign Tube
{ 8R-HPl
XCL82
8BQ5
8CW5
XL84
XL86
8GJ7
{ PCF801
PCF806
8HG8
9A8
9AK8
9AQ8
9BM5
PABC80
PCC85
9P9
9EN7
POC15
PCF800
9GB8
{ 30FLI
PCE800
9GV8
9U8
100E7
12A8
XCL85
PCF82
9R-ALI
OH4
12AC5
12AF3
12AH8
12AJ?
12AL5
12AT6
12ATl
12AU6
fOF9
121VP
HF121
fF41
W118
W142
W145
12R-K19
2003
HCH81
02
f0 HAA91
UB91
HBC90
Replace with
Foreign Tube
12AU7
13CM5
{ 12G-B7
XL36
HF94
mC7
{ IOFl8
W119
13GC8
{ 30PLI
LN319
14G6
L013
fOOH119
UBC81
B749
E82CC
ECC82
( ECC186
ECC802
ECC802S
M8136
{ 12BC32
HBC91
12AX7
J6LI3
B339
B759
E83CC
( ECC83
ECC803
M8137
12BE6
12BQ6GT
12BR3
12BY7
12C8
120F7
120T7
12FB5
12HU8
{ 12F31
HF93
12SN7GT
14K7
12G-B6
12R-K19
ELI80
VP120
ECC83
ECC83
30P12
PLL80
12K7
12K8
{ X71M
X76M
r
H74
OH76
OL74M
{ 1302
B36
OBC3
B36
HZ90
1
14lTH
UCH42
UCH43
X142
14L7
14100T
f'OJ
OH118
14Z3
HZ90
15A6
f153
N309
PL83
15CW5
fOP18
N379
PL84
{ 12H31
HK90
{ OF5
W76
12Q7GT
Replace with
Foreign Tube
12SQ7
12SX7GT
12Z3
12AV6
12BAG
American Tube
Number
B152
B309
B739
E81CC
ECC81
ECC801
ECC8015
M8162
QA2406
QB309
)'319
PCF86
1
rOC
LZ319
LZ329
PCF80
to Foreign Tubes
American Tube
Number
j30Cl
LZ319
LZ329
PCF80
Tubes-(Continued)
150Q8
OH142
UBC41
PCL84
16A5
C
16A8
OPLI2
N369
f PCL82
16AQ3
XY88
6
163PEN
N154
N329
PL82
PL87
Directly Interchangeable
American
American Tube
Number
Replace with
Foreign Tube
16GK8
130P113
30P114
PCL88
PCL800
17C8
j17N8
l7lDDP
UBF80
17EW8
t
HCC85
fYBl
PY83
17Z3
18GD6
18GV8
19AQ5
PY800
PY801
( U153
U193
U251
U329
19M-R9
PCL85
HL90
19C54
{ U191
U339
19D8
j10C14
19AJ8
UCH81
X119
19T8
19X3
19Y3
21A6
f
{9SU
PY82
U154
U192
U319
f13PEN
N152
N339
N359
PL81
PL820
l
25A6
KT33
25BQ6GT
25G-B6
to Foreign Tubes
American Tube
Number
Replace with
Foreign Tube
25E5
130P4
30P19
N308
PU6
25GF6
1 PL302
25GF6
25W6
30P4
KT32
25Y4
1PY31
U31
27GB5
27KG6
30A5
30AE3
3OP4
PL500
LL505
HL94
PY88
flSU
U118
U142
31A3
r
UY41
UY42
V311
V312
31A3
35W4
HY90
35Z46T
~ U74
U76
38A3
f1l9
U381
UY85
40KG6
American Tube
Number
f
50BM8
110PLl2
48A8
LN119
UCL82
50C5
50L6GT
55N3
HL92
KT71
UY82
807
45A5
45A5
1451PT
BF451
N142
UL41
l
OP18
N119
UL84
f25
5S1
P17A
QE06/50
QV05-25
954
{ ElF
UN954
955
f1CHA2
UN955
956
957
958A
959
5642
5670
5847
6080
6267
PL505
OP14
451PT
f BF41
N142
UL41
UL46
Replace with
Foreign Tube
45B5
U145
1311SU
U142
UY41
UY42
HABC80
f9BD
19U3
19W3
Y8
U152
U309
Tubes-(Continued)
6550
E2F
D1C
D2C
D3F
DY70
6CC42
6R-R8C
V
1834
ECC230
r
6F22
EF86
M8195
Z729
KT88
7025
1 B759
B339
ECC83
M8137
7027
7027A
7543
7581
KT66
KT88
EF94
KT66