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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: 151 to 180 from 415
 
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
RV200/600
Tungsram; Budapest (see also... H
click to access the tube page
RS329g
Telefunken Deutschland (TFK)... D
click to access the tube page
RS237
Telefunken Deutschland (TFK)... D
click to access the tube page
RM2
Standard Telephones and Cabl... GB
click to access the tube page
RM1
Standard Telephones and Cabl... GB
click to access the tube page
RGN2504 1931
Telefunken Deutschland (TFK)... D
click to access the tube page
RG62
Telefunken Deutschland (TFK)... D
click to access the tube page
RG48
Telefunken Deutschland (TFK)... D
The A variant with a 4-pin base. Coded 4L3 R4J.
RG1/240A
Mullard Radio Valve Co. Ltd.; 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
click to access the tube page
R18_Brimar
Brimar (STC); Foots Cray GB
R5V with BBC mark.  From 1924 box.
R5V 1925
MO Valve Co. Ltd.; GB GB
R-Type, probably Osram
R_Osram
Common type Great Britain tu... GB
click to access the tube page
QS150/15
GEC, General Electric Co Ltd... GB
click to access the tube page
QS75/20
GEC, General Electric Co Ltd... GB
click to access the tube page
QQV02-6
click to access the tube page
QMR201
Marconi's Wireless Telegraph... GB
click to access the tube page
PXC171
Ediswan, Siemens Edison Swan... GB
click to access the tube page
PXB103
Ediswan, Siemens Edison Swan... GB
click to access the tube page
PXA102
Ediswan, Siemens Edison Swan... GB
Some various shapes of the PX25
PX25
Marconi-Osram - (Valves/Tube... 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
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
PV200/1000
Tungsram; Budapest (see also... H
An elaborate pinch and the triple filament
PT611
Lissen Ltd.; London and Rich... GB
click to access the tube page
PT225_4pin
Lissen Ltd.; London and Rich... GB
click to access the tube page
PT25H
Marconi-Osram - (Valves/Tube... GB
Showing a couple of variants.  The VT104/PT15 was widely used in military transmitters and is electrically and physically quite rugged despite the large envelope.
PT15
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
PT10
Cossor, A.C.; London GB
click to access the tube page
PT4D
Ferranti, GB GB
click to access the tube page
PP4118
Tungsram; Budapest (see also... H
Result: 151 to 180 from 415
 

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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