Excerpt from the tube collection of Otto Frosinn. These images (tube photos) were uploaded to the respective tubes or valves by Otto Frosinn.
EL34 |
1950 |
Common type Europe tube/semi... |
EU |
|
EM5 |
1950 |
Telefunken Deutschland (TFK)... |
D |
|
HK90 |
1950 |
Common type Europe tube/semi... |
EU |
|
EF80 |
1950 |
Common type Europe tube/semi... |
EU |
|
EAA91 |
1951 |
Common type Europe tube/semi... |
EU |
|
ECC81 |
1951 |
Common type Europe tube/semi... |
EU |
|
ECC82 |
1951 |
Common type Europe tube/semi... |
EU |
|
EF85 |
1951 |
Common type Europe tube/semi... |
EU |
|
HY90 |
1951 |
Common type Europe tube/semi... |
EU |
|
UF80 |
1951 |
Common type Europe tube/semi... |
EU |
|
UF85 |
1951 |
Common type Europe tube/semi... |
EU |
|
EABC80 |
1952 |
Common type Europe tube/semi... |
EU |
|
EC92 |
1952 |
Common type Europe tube/semi... |
EU |
|
ECH81 |
1952 |
Common type Europe tube/semi... |
EU |
|
EF804 |
1952 |
Telefunken Deutschland (TFK)... |
D |
|
EZ80 |
1952 |
Common type Europe tube/semi... |
EU |
|
UCH81 |
1952 |
Common type Europe tube/semi... |
EU |
|
5Y3WGTA |
1953 ? |
Common type USA tube/semicond. |
USA |
|
DM71 |
1953 |
Common type Europe tube/semi... |
EU |
|
DF651 |
1954 |
Telefunken Deutschland (TFK)... |
D |
|
ECC83 |
1954 |
Common type Europe tube/semi... |
EU |
|
UF89 |
1954 |
Common type Europe tube/semi... |
EU |
|
EF89 |
1954 |
Common type Europe tube/semi... |
EU |
|
PL36 |
1955 |
Common type Europe tube/semi... |
EU |
|
EF83 |
1956 |
Common type Europe tube/semi... |
EU |
|
EL95 |
1956 |
Common type Europe tube/semi... |
EU |
|
PCC88 |
1956 |
Common type Europe tube/semi... |
EU |
|
PL84 |
1956 |
Common type Europe tube/semi... |
EU |
|
UBF89 |
1956 |
Common type Europe tube/semi... |
EU |
|
EBF83 |
1957 |
Common type Europe tube/semi... |
EU |
|
Otto Frosinn started his/her tube collection (valve collection) here on 03.Apr.2006.
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