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Roy Johnson, Great Britain (UK) - Tube collection

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ID = 5944
Photo Roy Johnson

Below you find a part of the tube collection Roy Johnson.

Collector of Valves and old Scientific, Test and Radio Equipment. Interests are mostly in British valves.
Result: 211 to 240 from 415
1 .. 3 4 5 6 7 8 9 10 11 12 13 14
 
Sort order:  [ Name | Maker | Year | Type | Country ]

Excerpt from the tube collection of Roy Johnson. These images (tube photos) were uploaded to the respective tubes or valves by Roy Johnson.

click to access the tube page
PT225_4pin
Lissen Ltd.; London and Rich... GB
An elaborate pinch and the triple filament
PT611
Lissen Ltd.; London and Rich... GB
Some early PX4 had an angled structure. Not easily seen in almost totally silvered balloon envelopes. The Post office claimed that this stucture gave a longer life in telephone repeater applications.
PX4 1929
Marconi-Osram - (Valves/Tube... GB
Some various shapes of the PX25
PX25
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
PXA102
Ediswan, Siemens Edison Swan... GB
click to access the tube page
PXB103
Ediswan, Siemens Edison Swan... GB
click to access the tube page
PXC171
Ediswan, Siemens Edison Swan... GB
click to access the tube page
QMR201
Marconi's Wireless Telegraph... GB
click to access the tube page
QS75/20
GEC, General Electric Co Ltd... GB
click to access the tube page
QS150/15
GEC, General Electric Co Ltd... GB
R-Type, probably Osram
R_Osram
Common type Great Britain tu... GB
R5V with BBC mark. From 1924 box.
R5V 1925
MO Valve Co. Ltd.; GB GB
click to access the tube page
R18_Brimar
Brimar (STC); Foots Cray GB
Early RG1-240. This has a 4-pin base rather than the ES. In later manufacture the suffix A indicated a 4-pin base variant. In later types the electrode structure was changed with a larger cathode block.
RG1-240
Mullard Radio Valve Co. Ltd.; GB
The A variant with a 4-pin base. Coded 4L3 R4J.
RG1/240A
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
RM1
Standard Telephones and Cabl... GB
click to access the tube page
RM2
Standard Telephones and Cabl... GB
click to access the tube page
S130
Cossor, A.C.; London GB
click to access the tube page
S215VM
Mazda = Valve (Tube) brand G... GB
click to access the tube page
SC1/1000
GEC, General Electric Co Ltd... GB
click to access the tube page
SC5/5000
GEC, General Electric Co Ltd... GB
click to access the tube page
SD4_Mullard
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
SG20
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
SP13
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
StentorTwo
Cossor, A.C.; London GB
click to access the tube page
T250_MO 1922
MO Valve Co. Ltd.; GB GB
click to access the tube page
TT11
GEC, General Electric Co Ltd... GB
click to access the tube page
Tuneon-Button
GEC, General Electric Co Ltd... GB
click to access the tube page
TV4
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
U12
MO Valve Co. Ltd.; GB GB
Result: 211 to 240 from 415
1 .. 3 4 5 6 7 8 9 10 11 12 13 14
 

Tube collector page of valve collector Roy Johnson as «own HP at RMorg»
As a member of Radiomuseum.org Roy Johnson displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Roy Johnson started his/her tube collection (valve collection) here on 13.Oct.2006. [index-en]

  
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