TUBE: 809
FICHIER SOURCE: sheets/049/8/809.pdf
FABRICANT: RCA (Radio Corporation of America, Harrison NJ)
ANNÉE: Dec. 20, 1946 (graphs 1937)
LANGUE: en

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RCA 809 — TRANSMITTING TRIODE
GENERAL DATA
Electrical:
Filament, Thoriated Tungsten:
Voltage: 6.3 ac or dc volts
Current: 2.5 amp
Amplification Factor: 50
Direct Interelectrode Capacitances:
Grid to Plate:     6.7  µµf
Grid to Filament:  5.7  µµf
Plate to Filament: 0.9  µµf
Mechanical:
Mounting Position: vertical base down, or horizontal pins 1&4 vertical plane
Overall Length: 6-13/32" ±5/32"
Seated Length: 5-25/32" ±5/32"
Max Diameter: 2-7/16"
Bulb: ST-19
Cap: Medium
Base: Medium-Shell Small 4-Pin Micanol, Bayonet
Basing Designation BOTTOM VIEW: 3G
Pinout: Pin 1=Filament; Pin 2=No Connection; Pin 3=Grid; Pin 4=Filament; Cap=Plate

AF POWER AMPLIFIER & MODULATOR — Class B
Maximum Ratings, Absolute Values:        CCS        ICAS
DC PLATE VOLTAGE:        750 max.   1000 max.   volts
MAX-SIGNAL DC PLATE CUR: 125 max.   125 max.    ma
MAX-SIGNAL PLATE INPUT:  75 max.    100 max.    watts
PLATE DISSIPATION:       25 max.    30 max.     watts
Typical Operation (values for 2 tubes):
DC Plate Voltage:        750        700/1000    volts
DC Grid Voltage:         -4.5       0/-9        volts
Peak AF Grid-to-Grid Voltage: 145   160/155     volts
Zero-Signal DC Plate Current: 40    70/40       ma
Max-Signal DC Plate Current: 200    250/200     ma
Effective Load Resistance (plate-to-plate): 8400   6200/11600   ohms

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Max-Signal Driving Power (approx): 2.5   3.4/2.7   watts
Max-Signal Power Output (approx): 105    120/145   watts

RF POWER AMPLIFIER — Class B Telephony (per tube, mod factor 1.0):
Max Ratings:             CCS        ICAS
DC PLATE VOLTAGE:        750 max.   1000 max.   volts
DC PLATE CURRENT:        50 max.    60 max.     ma
PLATE INPUT:             37.5 max.  45 max.     watts
PLATE DISSIPATION:       25 max.    30 max.     watts

PLATE-MODULATED RF POWER AMP — Class C Telephony (per tube, mod factor 1.0):
Max Ratings:             CCS        ICAS
DC PLATE VOLTAGE:        600 max.   750 max.    volts
DC GRID VOLTAGE:         -200 max.  -200 max.   volts
DC PLATE CURRENT:        83 max.    100 max.    ma
DC GRID CURRENT:         35 max.    35 max.     ma
PLATE INPUT:             50 max.    75 max.     watts
PLATE DISSIPATION:       17.5 max.  25 max.     watts

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RF POWER AMPLIFIER & OSCILLATOR — Class C Telegraphy (key-down, per tube no modulation):
Max Ratings:             CCS        ICAS
DC PLATE VOLTAGE:        750 max.   1000 max.   volts
DC GRID VOLTAGE:         -200 max.  -200 max.   volts
DC PLATE CURRENT:        100 max.   100 max.    ma
DC GRID CURRENT:         35 max.    35 max.     ma
PLATE INPUT:             75 max.    100 max.    watts
PLATE DISSIPATION:       25 max.    30 max.     watts
Typical Operation:
DC Plate Voltage: 500/750  1000 volts; Power Output: 35/55  75 watts
NOTE: with plate voltage 1000V, fixed bias of at least -10 volts should be used.

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[courbes seules — pas de données tabulaires] Outline drawing ST-19 bulb, medium cap, medium-shell small 4-pin bayonet base. 92CM-4835R1

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[courbes seules — pas de données tabulaires] Average plate characteristics, Ef=6.3V DC

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[courbes seules — pas de données tabulaires] Average characteristics Type 809, grid mA vs plate volts