Excerpt from the tube collection of Otto Frosinn. These images (tube photos) were uploaded to the respective tubes or valves by Otto Frosinn.
L414 |
1927 |
Valvo GmbH, Radioröhrenfabri... |
D |
|
REN1004 |
1927 |
Telefunken Deutschland (TFK)... |
D |
|
26 |
1927 |
Common type USA tube/semicond. |
USA |
|
608 |
1927 |
Marathon (tubes), Northern M... |
USA |
|
608R |
1927 |
Marathon (tubes), Northern M... |
USA |
|
1823 |
1927 |
Philips; Eindhoven (tubes in... |
NL |
|
B443 |
1927 |
Philips; Eindhoven (tubes in... |
NL |
|
22 |
1927 |
Common type USA tube/semicond. |
USA |
|
RE114 |
1928 |
Telefunken Deutschland (TFK)... |
D |
|
RE604 |
1928 |
Telefunken Deutschland (TFK)... |
D |
|
REN804 |
1928 |
Telefunken Deutschland (TFK)... |
D |
|
RES094 |
1928 |
Telefunken Deutschland (TFK)... |
D |
|
RES164d |
1928 |
Telefunken Deutschland (TFK)... |
D |
|
A4110 |
1929 |
Valvo GmbH, Radioröhrenfabri... |
D |
|
E424N |
1929 |
Philips; Eindhoven (tubes in... |
NL |
|
E428 |
1929 |
Philips; Eindhoven (tubes in... |
NL |
|
E462 |
1929 |
Philips; Eindhoven (tubes in... |
NL |
|
REN904 |
1929 |
Telefunken Deutschland (TFK)... |
D |
|
RGN504 |
1929 |
Telefunken Deutschland (TFK)... |
D |
|
24A |
1929 |
Common type USA tube/semicond. |
USA |
|
L416D |
1930 |
Valvo GmbH, Radioröhrenfabri... |
D |
|
RENS1823d |
1931 |
Telefunken Deutschland (TFK)... |
D |
|
DSB |
1932 |
MO Valve Co. Ltd.; GB |
GB |
|
E499 |
1932 ? |
Philips; Eindhoven (tubes in... |
NL |
|
RENS1284 |
1932 |
Telefunken Deutschland (TFK)... |
D |
|
RGN564 |
1932 |
Telefunken Deutschland (TFK)... |
D |
|
295 |
1932 |
Speed, Cable Radio Tube Corp... |
USA |
|
AB1 |
1933 |
Common type Europe tube/semi... |
EU |
|
ACH1 |
1933 |
Common type Europe tube/semi... |
EU |
|
H4128D |
1933 |
Valvo GmbH, Radioröhrenfabri... |
D |
|
Otto Frosinn started his/her tube collection (valve collection) here on 03.Apr.2006.
[index-en]