Antique radios, Old Time Radios
R5V
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Country:
Great Britain (UK)
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| Identical to |
R5V
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| Similar
Tubes |
Normally replaceable-slightly different:
HL565
Other class quality (otherwise equal):
R_Marconi
Heater and shape different:
II_Marconi
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| First year |
1925
Saga of the Vacuum Tube, Tyne page 382, 384
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| First Source
(s) |
Nov.1924 : - - Manufacturers Literature
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| Predecessor Tubes |
R_Marconi
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Filament |
Vf 5 Volts / If 0.7 Ampere / Direct / Battery = |
| Description |
Improved type R with longer working life. First made with a spherical bulb but later versions had a tapered glass bulb.
"Suitable Anode Volts 30-120" Data on box.
Manufacturer data states 60-120V as LF amplifier, 30-50V as HF amplifier and detector.
Amplification factor of 9. Successor to RZ.
Manufacturer's Catalogue of November 1924 includes this tube
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Dimensions (WHD)
incl. pins / tip |
42 x 110 x mm / 1.65 x 4.33 x inch |
| Information source |
British Radio Valves - The Vintage Years: 1904-1925
Saga of the Vacuum Tube, Tyne
70 Years of Radiotubes and V.
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R5V: rtt
Anonymous 10 Collector
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Just Qvigstad
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R5V: own collection
Peter den Boer
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