TUBE: 211
FICHIER SOURCE: sheets/049/2/211.pdf (6 pages)
FABRICANT: RCA (Radio Corporation of America, Harrison, New Jersey) — Tube Department. DATA daté MAY 1, 1950 (courbes JAN 1936).
LANGUE: anglais
TYPE: POWER TRIODE (transmitting), chauffage DIRECT (filament thorié-tungstène). Triode à grille unique — PAS une tétrode.

===== PAGE 1 (DATA 1) =====
RCA — 211 — POWER TRIODE
GENERAL DATA — Electrical:
  Filament, Thoriated-Tungsten:
    Voltage ............ 10 (ac or dc volts)
    Current ............ 3,25 amp
  Amplification Factor . 12
  Direct Interelectrode Capacitances:
    Grid to Plate ...... 14 µµF (pF)
    Grid to Filament ... 5,4 µµF
    Plate to Filament .. 4,8 µµF
  [→ SEULEMENT 3 capacités interélectrodes = structure à UNE SEULE grille → TRIODE confirmée. Aucune grille-écran.]
Mechanical:
  Mounting Position: Vertical base down, or Horizontal with pins 1 & 3 in vertical plane.
  Maximum Overall Length .. 7-7/8"
  Maximum Diameter ........ 2-5/16"
  Bulb .................... T-18
  Base .................... Medium-Metal-Shell Jumbo 4-Pin, Bayonet
  Basing Designation (bottom view) .. 4AZ
  Pin 1 = Grid ; Pin 2 = Filament ; Pin 3 = Plate ; Pin 4 = Filament
  (AA' = plane of electrodes)

AF POWER AMPLIFIER & MODULATOR — Class A1:
 Maximum CCS Ratings (Absolute Values):
   DC PLATE VOLTAGE = 1250 max volts
   PLATE DISSIPATION = 75 max watts
 Typical Operation and Characteristics:
   DC Plate Voltage ...... 750 / 1000 / 1250 volts
   DC Grid Voltage ....... -46 / -61 / -80 volts
   Peak AF Grid Voltage .. 41 / 56 / 75 volts
   DC Plate Current ...... 34 / 53 / 60 mA
   Plate Resistance ...... 4400 / 3800 / 3600 ohms
   Transconductance ...... 2750 / 3150 / 3300 µmhos
   Load Resistance ....... 8800 / 7600 / 9200 ohms
   2nd Harmonic Distortion 5 / 5 / 5 %
   Power Output .......... 5,6 / 12 / 19,7 watts

AF POWER AMPLIFIER & MODULATOR — Class B:
 Maximum CCS Ratings (Absolute Values):
   DC PLATE VOLTAGE = 1250 max volts

===== PAGE 2 (DATA 1 cont.) =====
(Class B suite)
  MAX-SIGNAL DC PLATE CURRENT = 175 max mA
  MAX-SIGNAL PLATE INPUT = 220 max watts
  PLATE DISSIPATION = 100 max watts
 Typical Operation (values for 2 tubes):
   DC Plate Voltage ........... 1000 / 1250 volts
   DC Grid Voltage ............ -77 / -100 volts
   Peak AF Grid-to-Grid Voltage 380 / 410 volts
   Zero-Signal DC Plate Current 20 / 20 mA
   Max-Signal DC Plate Current  320 / 320 mA
   Effective Load R (plate-to-plate) 6900 / 9000 ohms
   Max-Signal Driving Power ... 7,5 / 8 watts
   Max-Signal Power Output .... 200 / 260 watts

RF POWER AMPLIFIER — Class B Telephony (carrier, per tube, mod. factor 1.0):
 Maximum CCS Ratings (Absolute Values):
   DC PLATE VOLTAGE = 1250 max volts
   DC PLATE CURRENT = 150 max mA
   PLATE INPUT = 150 max watts
   PLATE DISSIPATION = 100 max watts
 Typical Operation:
   DC Plate Voltage .. 1000 / 1250 volts
   DC Grid Voltage ... -77 / -100 volts
   Peak RF Grid Voltage 125 / 125 volts
   DC Plate Current .. 130 / 106 mA
   DC Grid Current ... 5 / 1 mA
   Driving Power ..... 10 / 7,5 watts
   Power Output ...... 40 / 42,5 watts

PLATE-MODULATED RF POWER AMPLIFIER — Class C Telephony (carrier, per tube, mod. factor 1.0):
 Maximum CCS Ratings (Absolute Values):
   DC PLATE VOLTAGE = 1000 max volts
   DC GRID VOLTAGE = -400 max volts
   DC PLATE CURRENT = 175 max mA
   DC GRID CURRENT = 50 max mA
   PLATE INPUT = 175 max watts

===== PAGE 3 (DATA 2) =====
(Class C Telephony suite)
  PLATE DISSIPATION = 67 max watts
 Typical Operation:
   DC Plate Voltage .. 750 / 1000 volts
   DC Grid Voltage ... -200 / -260 volts
   Peak RF Grid Voltage 350 / 410 volts
   DC Plate Current .. 150 / 150 mA
   DC Grid Current ... 35 / 35 mA
   Driving Power ..... 12 / 14 watts
   Power Output ...... 65 / 100 watts

RF POWER AMPLIFIER & OSCILLATOR — Class C Telegraphy (key-down, per tube, no modulation):
 Maximum CCS Ratings (Absolute Values):
   DC PLATE VOLTAGE = 1250 max volts
   DC GRID VOLTAGE = -400 max volts
   DC PLATE CURRENT = 175 max mA
   DC GRID CURRENT = 50 max mA
   PLATE INPUT = 220 max watts
   PLATE DISSIPATION = 100 max watts
 Typical Operation:
   DC Plate Voltage .. 750 / 1000 / 1250 volts
   DC Grid Voltage ... -135 / -175 / -225 volts
   Peak RF Grid Voltage 275 / 315 / 375 volts
   DC Plate Current .. 150 / 150 / 150 mA
   DC Grid Current ... 18 / 18 / 18 mA
   Driving Power ..... 5 / 6 / 7 watts
   Power Output ...... 65 / 100 / 130 watts
Notes: * averaged over AF cycle ; # for ac filament supply ; data on operating frequencies on sheet TRANS. TUBE RATINGS vs FREQUENCY.

===== PAGE 4 (CE-7313) =====
[Dessin d'encombrement — pas de données tabulaires]
T18 BULB ; Medium Metal-Shell Jumbo 4-Pin Bayonet Base ; 2-5/16" max diam. ; 7-7/8" max long.

===== PAGE 5 (92CM-4537) =====
[courbes seules — pas de données tabulaires] AVERAGE PLATE CHARACTERISTICS, Ef=10 volts AC. Plate amperes vs plate volts (Eb), lignes de grille (Ec) de -125 à +200V. (daté JAN.10.1936)

===== PAGE 6 (92CM-4538) =====
[courbes seules — pas de données tabulaires] TYPICAL CHARACTERISTICS, Ef=10 volts AC. Grid milliamperes vs plate volts, grid volts Ec=+25 à +200V. (daté JAN.13.1936)