RADIOBELL TYPE 44 SCHEMA

BOUWJAAR 1943 – 1944

ECH3

Base Europe side contact base P (P8A) (Codex=Sa) Top contact with a cap

Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC /

Tube prices 4 Tube prices (visible for members only)

Literature Taschenbuch zum Röhren-Codex 1948/49

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Normally replaceable-slightly different: ECH3S Different connections: E1R Other base: ECH33 ; ECH3G ; X147 Other base and data slightly different: ECH11 ; OM10 ; WE20 Multiple differences or of other kind: 6E8G ; 6E8MG

EF9: RTT 1974 (Franzis) 13. Auflage

Martin Renz

ube type: Vacuum Pentode RF/IF-Stage Controlling (mu)

Ca. 1925 up to 1945 rare.

Base Europe side contact base P (P8A) (Codex=Sf) Top contact with a cap

Was used by Radio/TV-reception etc.

Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC /

Description Red series

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Other class quality (otherwise equal): 4659 Other characteristic (electr. data): EF9N ; WE16 Heater different: UF5 Other base: EF22 ; EF39 Multiple differences or of other kind: EF9nT

EBC3

Tube type: Double Diode-Triode Audio Frequency

Base Europe side contact base P (P8A) (Codex=Sa) Top contact with a cap

Was used by Radio/TV-reception etc.

Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC /

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Literature Babani, International Radio Tube Encyclopaedia Pages 660-662 Taschenbuch zum Röhren-Codex 1948/49

Identical to EBC3 = TEBC3 = MEBC3 = CV1428 = VEBC3 = 6E4_Ultron = VT166_GPO = CV1715

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Normally replaceable-slightly different: DDT6 ; DDT6S ; WE11 Other base: EBC33

EL3:

Tube type: Vacuum Pentode Power/Output

Base Europe side contact base P (P8A) (Codex=Seo)

Filament Vf 6.3 Volts / If 1.2 Ampere / Indirect / Parallel, (AC/DC) /

Description The EL3 of the red series is a 6.3 volts- version of the AL3, inclusively the round cathode, though with a straight tubular bulb with a narrowed upper section. As

with AL3/AL4 before, after some months the EL3 was replaced with the directly replaceable EL3N, with the more efficient profile-cathode, reduced heater current and the usual dome bulb [Jacob Roschÿ, 13 Feb 2003] Only an EL3 with a straight cylindrically bulb is a true EL3, which was produced only during a few months in 1936..37. Versions with a bulgy bulb are normally the newer EL3N's, even if only EL3 is printed on, due to indolence. The same happened with tube lineup lists on radios or on schematic diagrams, where EL3 is mentioned, though EL3N is meant, since the former EL3 was obsolte then. Identical to EL3 = 3REP6 = TEL3 = VEL3

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Heater different: EL3N Heater and shape different: AL3 Other base and data slightly different: PP6C

EM4

Tube type: Mag. Eye, 2 ranges, 2 shadow angles Indication

Base Europe side contact base P (P8A) (Codex=Se)

Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC /

Description Rote Serie Text in other languages (may differ)

Dimensions (WHD) incl. pins / tip

28 x 78 x mm / 1.10 x 3.07 x inch

dentical to EM4 = CV1434

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Normally replaceable-slightly different: EM4n ; EM5 ; WE12 Other base: EM34

AZ1

Tube type: Full-Wave Vacuum Rectifier Power-supply

Base Europe side contact base P (P8A) (Codex=So)

Filament Vf 4 Volts / If 1.1 Ampere / Direct /

Tube prices

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Literature Identical to AZ1 = 140NG = TAZ1 = 4VGL100 = TZ1 = WE54 = WE55 =

MAZ1 = VG5007 = RAZ1 = VAZ1 = 4R3_Ultron

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Normally replaceable-slightly different: 3118_OSW ; 4GG4 ; 4Z1 ; DE6_Oxytron ; OSW3118 Other base: 1805 ; AZ11 ; AZ31 ; RGN1064 Other base and data slightly different: AZ21 Multiple differences or of other kind: 4Z60a