TUBE: 6K6GT
FICHIER SOURCE: sheets/201/6/6K6GT.pdf
FABRICANT: Hytron Corporation (Salem, Mass.) + JETEC data (Joint Electron Tube Engineering Council)
ANNÉE: Hytron from RMA release #134 April 11 1938 (B-1 3-38); JETEC Rel 134B May 12 1953
LANGUE: en

===== PAGE 1 (Hytron) =====
[Logo HYTRON RADIO TUBES] TYPE 6K6GT — HYTRON BANTAM
GENERAL DESCRIPTION
Application: The Hytron 6K6GT is a cathode type power amplifier pentode which may be employed either singly or in push-pull arrangements. The 6K6GT is a glass tube equipped with a small octal base and has ratings and characteristics identical to those of the type 41.
Physical Characteristics: Bulb T-9D (et T-9C).

Pinout (Bottom View):
  G2, G1, P, H, H, N.C., K (KEY).
  pin1=NC, pin2=H, pin3=P, pin4=G2, pin5=G1, pin7=H, pin8=K
[*** TYPOLOGIE: PENTODE de puissance, cathode indirecte. ***]

RATING AND CHARACTERISTICS — Heater: Voltage 6.3 Volts ; Current 0.4 Ampere.
Note: Voltage between heater and cathode should be kept at a minimum if direct connection is not possible.

OPERATING CONDITIONS AND CHARACTERISTICS:
  Plate Voltage  125 | 167.5 | 180 | 250(max) V
  Grid Voltage  -10 | -12.5 | -13.5 | -18.0 V
  Screen Voltage  125 | 167.5 | 180 | 250(max) V
  Plate Current  11 | 17 | 18.5 | 32 mA
  Screen Current  2 | 3 | 3 | 5.5 mA
  Plate Resistance (approx.)  100000 | 85000 | 81000 | 68000 Ω
  Mutual Conductance  1525 | 1800 | 1850 | 2200 µmho
  Amplification Factor (approx.)  150 | 150 | 150 | 150
  Load Resistance  11000 | 9500 | 9000 | 7600 Ω
  Power Output  0.65 | 1.25 | 1.5 | 3.4 W
  (Total harmonic distortion of 10%. Maximum at 250V.)
  * A bias of -16.5 V and a load of 7000 Ω gives 3.2 W at 7% THD.
  ** Transformer/impedance-coupled input recommended; if RC coupling, grid return DC resistance ≤1 MΩ self-bias, 0.1 MΩ fixed bias.
HYTRON CORPORATION, Salem Mass. from RMA release #134, April 11, 1938. B-1 3-38.
Note: For characteristic curves refer to type 41.

===== PAGE 2 (JETEC, Rel 134B, May 12 1953) =====
JETEC DATA — JETEC TYPE 6K6GT — PENTODE
MECHANICAL DATA: Coated unipotential cathode ; Outline 9-11 or 9-41 ; Bulb T-9 ; Base B6-81/B7-7 interm shell octal or B6-84/B7-59 short interm shell octal ; Max diam 1-9/32" ; Max overall length 3-5/16" ; Max seated height 2-3/4" ; Basing 7S.
Pin connections:
  Pin 1 = No connection (omitted on B6-81, B6-84)
  Pin 2 = Heater ; Pin 3 = Plate ; Pin 4 = Grid #2 ; Pin 5 = Grid #1 ; Pin 7 = Heater ; Pin 8 = Cathode, grid #3
[*** TYPOLOGIE: PENTODE VRAIE — pin 8 = cathode + grille #3. ***]
ELECTRICAL DATA — Capacitances (approx.): Grid to plate (g1 to p) 0.5 µµf ; Input g1 to (h+k+g2+g3) 5.5 µµf ; Output p to (h+k+g2+g3) 6.0 µµf
Heater: voltage 6.3 V ; current 400 ma. Max heater-cathode: neg total DC+peak 200 V ; pos DC 100 V, total DC+peak 200 V.
Ratings - class A1 amplifier:
  Max plate voltage  315 V ; Max grid #2 voltage  285 V ; Max plate dissipation  8.5 W ; Max grid #2 dissipation  2.8 W
  Max grid #1 circuit resistance: fixed bias 0.1 MΩ ; cathode bias 0.5 MΩ

===== PAGE 3 (JETEC Page 2) =====
Typical operating conditions, class A1 amplifier (single tube):
  Plate voltage  100 | 250 | 315 V ; Grid #2 voltage  100 | 250 | 250 V ; Grid #1 voltage  -7 | -18 | -21 V ; Peak AF grid #1  7 | 18 | 21 V
  Zero-signal plate current  9 | 32 | 25.5 mA ; Max-signal plate current  9.5 | 33 | 28 mA
  Zero-signal grid #2 current  1.6 | 5.5 | 4.0 mA ; Max-signal grid #2 current  3 | 10 | 9 mA
  Plate resistance (approx.)  104000 | 90000 | 110000 Ω ; Transconductance  1500 | 2300 | 2100 µmho
  Load resistance  12000 | 7600 | 9000 Ω ; Max-signal power output  0.35 | 3.4 | 4.5 W ; THD  11 | 11 | 15 %
Class A1 push-pull (two tubes), Fixed | Cathode bias:
  Plate voltage  285 | 285 V ; Grid #2 voltage  285 | 285 V ; Grid #1 voltage  -25.5 | - V ; Cathode resistor  - | 400 Ω
  Peak AF grid #1 to grid #1  51 | 51 V ; Zero-signal plate current  55 | 55 mA ; Max-signal plate current  72 | 61 mA
  Zero-signal grid #2 current  9 | 9 mA ; Max-signal grid #2 current  17 | 13 mA
  Plate-to-plate load resistance  12000 | 12000 Ω ; Max-signal power output  10.5 | 9.8 W ; THD  6 | 4 %
Ratings, VERTICAL DEFLECTION AMPLIFIER (Triode connected):
  Max DC plate voltage  315 V ; Max peak positive voltage (abs max)  1200 V ; Max plate dissipation  7 W ; Max peak negative grid voltage  250 V
  Max average cathode current  25 mA ; Max peak cathode current  75 mA ; Max grid circuit resistance (cathode bias)  2.2 MΩ
Average characteristics - Triode connected:
  Plate voltage  250 V ; Grid voltage  -18 V ; Plate current  37.5 mA ; Transconductance  2700 µmho ; Amplification factor  6.8 ; Plate resistance (approx.)  2500 Ω ; Grid V for Ib=0.5mA  -48 V

===== PAGE 4 (JETEC Page 3) =====
Notes §/§§/#: design center system; 525-line 30-frame TV operation; grid-leak bias protection. Refer to "Interpretation of Receiving Tube Ratings". (Pas de données tabulaires nouvelles.)