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ID = 21892
Tube type:  Transmitting Tetrode, air cooled 
Identical to 4-65A = 8165 = QB3/200 = CV1905

Base Septar (1+6 pins) Top contact with a cap
Filament Vf 6 Volts / If 3.5 Ampere / Direct / Parallel, (AC/DC) /

Va <3kV, Pa <65W, f <150 MHz.

Dimensions (WHD)
incl. pins / tip
61 x 109 x mm / 2.40 x 4.29 x inch
Weight 85 g / 3.00 oz
Tube prices 0 Tube prices (visible for members only)
Literature -- Original-techn. papers.   Valvo Senderöhren 1983

  4-65A: ARRL The Radio Amateur's Handbook 1950
Götz Linss
4-65A: K.H.Fischer
Karlheinz Fischer

4-65A: ARRL Handbook 1972
Michael Schlör

4-65A: Valvo,Senderöhren, 1983
Anonymous 15 Collector

Usage in Models 1= 1950?? ; 1= 1964

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 978     Replies: 0
4-65A - typische Schaltung fehlt
Götz Linss

In den technischen Datenblättern finden sich MEHRERE typische Schaltungen für diese Röhre. Einer der Röhrenadmins könnte da ja mal ein geeignetes Bild auf die "Typische Schaltung" übertragen.

MfG Götz Linß

End of forum contributions about this tube

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