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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: 1 to 30 from 415
  
 1 2 3 4 5 6 .. 10 .. 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
T250_MO 1922
MO Valve Co. Ltd.; GB GB
click to access the tube page
B8 1924
BTH (B.T.H.), British Thomso... GB
Serial 2444B - Manufactured 1924.
DE5_Marconi 1924
MO Valve Co. Ltd.; GB GB
R5V with BBC mark. From 1924 box.
R5V 1925
MO Valve Co. Ltd.; GB GB
click to access the tube page
PM2 1926
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
210HL_Cossor 1926
Cossor, A.C.; London GB
click to access the tube page
80 1927
Common type USA tube/semicond. USA
click to access the tube page
UY227 1927
Common type USA tube/semicond. USA
Mazda Version. Heavy gettering reduces visibility.
HL210 1928
Common type Great Britain tu... 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
click to access the tube page
HT4 1929
Westinghouse El. & Mfg. Co. ... USA
click to access the tube page
AC/HL 1929
Common type Great Britain tu... GB
click to access the tube page
DH 1931
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
DPT 1931
MO Valve Co. Ltd.; GB GB
click to access the tube page
RGN2504 1931
Telefunken Deutschland (TFK)... D
click to access the tube page
DP/Pen 1933
Cossor, A.C.; London GB
click to access the tube page
VDSB 1933
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
AB2 1934
Common type Europe tube/semi... EU
click to access the tube page
955 1934
Common type USA tube/semicond. USA
click to access the tube page
AZ1 1935
Common type Europe tube/semi... EU
Tube with metallising removed.
D41 1935
MO Valve Co. Ltd.; GB GB
click to access the tube page
D42 1936
MO Valve Co. Ltd.; GB GB
click to access the tube page
5U4G 1936
Common type Worldwide tube/s... ZZ
click to access the tube page
D63 1937
MO Valve Co. Ltd.; GB GB
click to access the tube page
ECH2 1938
Philips; Eindhoven (tubes in... NL
An English made Mullard
EL33 1938
Common type Europe tube/semi... EU
click to access the tube page
EC50 1939
Common type Europe tube/semi... EU
click to access the tube page
EL50 1940
Common type Europe tube/semi... EU
click to access the tube page
DDD25 1941
Common type Europe tube/semi... EU
Outer screen removed, Note internal shields and robust anode supports.
DF25 1941
Philips; Eindhoven (tubes in... NL
Result: 1 to 30 from 415
  
 1 2 3 4 5 6 .. 10 .. 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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