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

Base Septar (1+6 pins) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 6 Volts / If 3.5 Ampere / Direct / Specified voltage 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 1 Tube prices (visible for members only)
Information source -- Original-techn. papers.   Valvo Senderöhren 1983
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 437, p. 964 & 965

4-65A: ARRL The Radio Amateur's Handbook 1950
Götz Linss † 27.06.21

465a_so.png 4-65A: ARRL Handbook 1972
Anonymous 10 Collector

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

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Usage in Models 1= 1948 ; 1= 1950?? ; 1= 1964

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 1928     Replies: 0
4-65A - typische Schaltung fehlt
Götz Linss † 27.06.21

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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