Antique radios, Old Time Radios

B443

Country:	Netherlands		Brand:	Philips; Eindhoven (tubes international!); Netherlands
			Tube type:	Vacuum Pentode Power/Output

Tube ID = 1670

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Identical to	B443 = LL415 = ME4_362 = R79_5pin = W443 = 425PT = 415QD = 415PT = 415PP = PP415 = DX3 = J43
Similar Tubes	Normally replaceable-slightly different: 2-443; 4GBF; D100; L43; L43m; L506; M1004; P420_5pin; PB4_5pin; PT415_5pin; RO4243_5pin; S_5pin; T60_Adzam_5pin; TB43_5pin; TL414_5pin; TU415 Other base: 410PT; 415PP_4pin; 415PT_4pin; 415QD_4pin; B443_3SC; B443_4pin; B443_UX4pin; PT415; R79; RO4243; T60_Adzam_4pin; TB43; TL414
First year	Sep.1927 Tube leaflet collection E.Erb Analysis by original leaflets
Successor Tubes	1929 C443 RES164 PP430

Base	Europe 5-Pin (O5A, B5) (Codex=Foo) Sidecontact
Filament	Vf 4 Volts / If: 0.15 Ampere / -: Direct / -: Battery = /
Description	Output pentode, on market Sept. 1927 Equivalent types: RES174d (Telefunken), L415D (Valvo), PP415 (Tungsram) Successors: B443S, L416D, RES164 The B443 is the first produced output pentode of the world, introduced by Philips in September 1927. It's amplification and its power output was much higher as with an output triode of equal size. The B443 has established the replacement of output triodes by multiple-grid output tubes. The equivalent Telefunken type RES174d appeared in 1931. [Jacob Roschÿ, 2003-Jan-14] Text in other languages (may differ)
Tube prices	2 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	B443: Philips Innfo Willy De Grande

B443: P.ST
Peter Steffen

B443: Telefunken Werkstattbuch
Wolfgang Bauer

B443: Philips Röhren Daten 1933
Peter Hoddow

Usage in Models	2= 1927? ; 8= 1927 ; 2= 1928?? ; 13= 1928? ; 22= 1928 ; 6= 1929?? ; 1= 1929? ; 41= 1929 ; 5= 1930?? ; 4= 1930? ; 34= 1930 ; 4= 1931? ; 36= 1931 ; 2= 1932? ; 12= 1932 ; 1= 1933?? ; 7= 1933 ; 3= 1934 ; 2= 1935?? ; 2= 1935 ; 1= 1936 ; 1= 1937 ; 2= 1938 ; 2= 1940??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 213

Forum contributions about this tube
B443
Threads: 1 | Posts: 3

Hits: 1012 Replies: 0 B443 (B443)
Gian-Fausto Balestra 29.Jun.07	1 B443 (B443) La valvola B443 viene utilizzata anche per il modello 6 della radio Televox_CH 6 anno 1925 Probabilmente la valvola B443 utilizzata nel modello 6 della Televox é stata sostituita all'originale. Sarebbe opportuno trovare lo schema o la documentazione dell'epoca per vdere quali valvole venivano impiegate all'origine. L'apparecchio della mia collezione data del 1925.
Jacob Roschy 29.Jun.07	2 no subject Hallo Gian-Fausto, This is impossible, since the B443 was introduced in September 1927. Best Regards, Jacob Roschÿ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ciao Gian-Fausto, questo è impossibile, poiché il B443 è stato introdotto nel mese di settembre del 1927. Saluti, Jacob Roschÿ
Gian-Fausto Balestra 17.Dec.08	3 Valvola B443 Hallo Jacob, Thanks for your observation Best Regards, Gian-Fausto Balestra

B443
End of forum contributions about this tube

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