Antique radios, Old Time Radios
UM4
Country:
Europe
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Identical to |
UM4
= 10M2
= MUM4
= 13M4U
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Similar
Tubes |
Normally replaceable-slightly different:
UM35
Different connections:
UM34
Multiple differences or of other kind:
OM5_MagicEye
; PM5_MagicEye
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First year |
1940
Tube leaflet collection E.Erb Analysis by original leaflets (P41-1)
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First Source
(s) |
Jan.1940 : Daten und Schaltungen moderner ... Röhren; Philips # 3
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Predecessor Tubes |
C/EM2
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Successor Tubes
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1954
UM34
UM80
UM85
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Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=V)
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Was used by |
Radio/TV-reception etc. |
Filament |
Vf 12.6 Volts / If 0.1 Ampere / Indirect / Specified voltage AND current AC/DC |
Dimensions (WHD) incl. pins / tip |
27 x 90 x mm / 1.06 x 3.54 x inch |
Weight |
25 g / 0.88 oz |
Tube prices |
10 Tube prices (visible for members
only)
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Information source |
Taschenbuch zum Röhren-Codex 1948/49
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UM4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
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UM4: RTT Schwandt
Günther Stabe † 19.8.20
More ...
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Just Qvigstad
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UM4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):747
Collection of
Collection of a member from FIN Collection of a member from FIN
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