Production Dates of Telefunken Tubes from
January 1930 to December 1968: |
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Example: Tube marked "ka" was
manufactured in 01.44 (January 1944) |
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First Letter --> |
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a |
b |
c |
d |
e |
f |
g |
h |
i |
k |
l |
m |
n |
o |
p |
q |
r |
s |
t |
u |
v |
w |
x |
y |
z |
ä |
ö |
ü |
|
a |
05.35 |
04.55 |
07.55 |
02.31 |
01.56 |
01.53 |
04.50 |
10.56 |
07.37 |
01.44 |
03.44 |
10.57 |
02.44 |
05.30 |
10.39 |
10.58 |
01.48 |
04.52 |
08.35 |
11.48 |
04.49 |
09.37 |
05.34 |
10.60 |
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a |
b |
04.31 |
10.67 |
10.49 |
10.55 |
10.53 |
04.56 |
10.51 |
11.56 |
04.33 |
01.60 |
07.57 |
11.41 |
01.58 |
08.39 |
07.58 |
11.58 |
01.59 |
04.59 |
08.40 |
10.59 |
01.52 |
05.38 |
07.36 |
11.60 |
01.61 |
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|
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b |
c |
01.49 |
05.55 |
08.55 |
11.55 |
02.56 |
01.54 |
07.56 |
07.50 |
05.36 |
04.54 |
08.57 |
01.51 |
02.58 |
04.58 |
08.58 |
12.58 |
02.59 |
05.59 |
08.31 |
11.59 |
07.54 |
04.60 |
10.54 |
12.60 |
02.61 |
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|
c |
d |
07.44 |
10.46 |
09.55 |
01.62 |
03.56 |
05.56 |
08.44 |
10.38 |
06.33 |
12.46 |
09.57 |
11.57 |
03.36 |
05.58 |
09.58 |
01.65 |
09.44 |
06.59 |
07.53 |
12.59 |
02.40 |
05.60 |
07.60 |
09.49 |
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|
|
|
d |
e |
04.32 |
10.52 |
09.33 |
07.30 |
04.62 |
06.56 |
08.56 |
11.33 |
01.57 |
02.37 |
02.33 |
03.32 |
03.58 |
12.34 |
10.64 |
02.65 |
09.32 |
11.35 |
07.31 |
01.66 |
01.60 |
12.39 |
04.34 |
02.35 |
03.61 |
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|
|
e |
f |
02.49 |
06.55 |
01.30 |
02.36 |
05.62 |
08.46 |
09.56 |
07.46 |
04.53 |
09.40 |
10.63 |
08.42 |
04.64 |
12.47 |
11.64 |
03.65 |
09.36 |
05.37 |
07.59 |
07.52 |
02.60 |
08.38 |
09.46 |
01.67 |
04.67 |
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|
|
f |
g |
05.32 |
07.61 |
01.36 |
09.30 |
06.62 |
07.62 |
10.62 |
10.33 |
02.57 |
11.37 |
11.63 |
04.47 |
05.64 |
06.58 |
05.47 |
|
10.50 |
05.52 |
06.47 |
12.31 |
03.60 |
08.51 |
08.60 |
02.67 |
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g |
h |
07.47 |
08.61 |
12.49 |
12.55 |
07.68 |
03.40 |
11.62 |
12.56 |
03.57 |
02.50 |
12.63 |
12.57 |
06.64 |
07.64 |
12.64 |
|
11.50 |
07.65 |
08.59 |
11.31 |
06.36 |
07.51 |
06.34 |
03.67 |
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h |
i |
05.31 |
09.61 |
10.61 |
02.62 |
02.34 |
08.62 |
12.62 |
06.39 |
05.40 |
04.57 |
|
01.32 |
|
01.41 |
|
|
08.37 |
01.40 |
09.59 |
07.43 |
04.66 |
06.37 |
09.60 |
05.42 |
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i |
k |
06.32 |
05.44 |
06.44 |
04.38 |
11.30 |
04.44 |
|
08.50 |
04.37 |
10.41 |
|
04.40 |
|
02.38 |
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|
08.41 |
12.35 |
10.65 |
08.43 |
06.49 |
04.48 |
10.66 |
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k |
l |
05.35 |
11.67 |
11.49 |
03.62 |
10.36 |
09.62 |
|
01.63 |
04.63 |
12.32 |
|
01.64 |
|
08.64 |
08.34 |
03.47 |
03.59 |
09.48 |
09.35 |
09.38. |
05.66 |
06.60 |
11.66 |
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|
l |
m |
04.36 |
12.67 |
11.61 |
01.31 |
11.53 |
02.53 |
05.50 |
02.63 |
05.53 |
10.42 |
|
02.51 |
|
03.41 |
|
|
04.65 |
08.48 |
08.53 |
03.42 |
02.52 |
09.51 |
12.66 |
08.49 |
05.67 |
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m |
n |
04.35 |
|
12.61 |
03.31 |
01.34 |
10.68 |
|
03.63 |
05.33 |
05.57 |
03.33 |
02.32 |
07.39 |
06.30 |
07.34 |
|
12.50 |
08.65 |
09.31 |
10.48 |
06.66 |
07.66 |
|
03.35 |
06.67 |
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n |
o |
03.49 |
|
07.33 |
04.68 |
08.68 |
02.39 |
10.47 |
|
05.63 |
11.32 |
|
02.64 |
|
12.41 |
08.36 |
|
05.65 |
07.48 |
11.65 |
12.48 |
|
12.37 |
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|
o |
p |
01.45 |
|
02.30 |
05.68 |
02.45 |
02.54 |
|
|
04.39 |
05.54 |
|
03.64 |
|
09.64 |
|
|
03.45 |
10.35 |
12.65 |
02.66 |
08.54 |
05.48 |
11.54 |
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p |
q |
01.55 |
|
01.68 |
06.68 |
09.68 |
11.68 |
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06.63 |
06.57 |
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06.65 |
09.65 |
06.41 |
03.66 |
|
08.66 |
|
12.40 |
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q |
r |
01.39 |
05.41 |
05.46 |
09.39 |
10.30 |
12.68 |
06.50 |
12.33 |
|
04.42 |
06.46 |
|
04.46 |
11.34 |
09.34 |
02.47 |
07.32 |
|
07.35 |
08.52 |
05.49 |
09.66 |
07.40 |
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r |
s |
02.55 |
|
08.33 |
|
12.30 |
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|
07.63 |
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08.32 |
03.37 |
|
|
03.39 |
|
|
01.35 |
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|
s |
t |
03.55 |
11.52 |
02.41 |
07.36 |
09.47 |
|
04.45 |
|
11.47 |
08.63 |
01.33 |
|
|
10.34 |
06.40 |
|
|
12.38 |
|
|
03.52 |
06.48 |
|
07.49 |
|
|
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|
t |
u |
06.31 |
|
02.68 |
08.30 |
|
07.42 |
01.38 |
09.50 |
02.43 |
10.32 |
|
|
|
04.30 |
|
|
11.38 |
03.38 |
|
|
|
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|
10.43 |
|
|
|
u |
v |
04.61 |
|
03.68 |
|
|
10.44 |
|
|
06.53 |
05.39 |
|
11.44 |
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|
12.44 |
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|
v |
w |
05.61 |
|
03.30 |
0847 |
|
03.54 |
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|
06.54 |
|
06.38 |
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|
02.48 |
|
09.63 |
09.52 |
09.54 |
|
12.54 |
|
05.51 |
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|
w |
x |
06.61 |
|
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|
|
03.53 |
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|
|
09.63 |
11.39 |
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|
|
03.48 |
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x |
y |
07.67 |
12.52 |
10.40 |
|
|
02.42 |
12.51 |
|
01.43 |
03.50 |
|
03.51 |
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|
06.52 |
|
07.41 |
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|
09.42 |
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|
y |
z |
08.67 |
|
04.41 |
|
12.53 |
09.41 |
11.51 |
|
11.42 |
11.40 |
|
06.42 |
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|
01.42 |
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|
10.31 |
11.36 |
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|
12.42 |
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z |
ä |
09.67 |
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04.43 |
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|
11.43 |
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ä |
ö |
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|
03.34 |
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ö |
ü |
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03.43 |
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12.43 |
ü |
*) |
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11.45 |
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|
10.45 |
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09.45 |
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08.45 |
12.45 |
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**) |
01.46 |
02.46 |
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03.46 |
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a |
b |
c |
d |
e |
f |
g |
h |
i |
k |
l |
m |
n |
o |
p |
q |
r |
s |
t |
u |
v |
w |
x |
y |
z |
ä |
ö |
ü |
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*) No second letter. Example "r" manufacured in
September 1946 **) Upper
case first letter, no second letter. Example "R" was manufactured in March 1946 |
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