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Preferred Substitutes ......................... 7212
Substitutes ................................... 6146 6146A 6146B 8298 8298A
Source ........................................ RCA DS 07/63
Small, sturdy, glass-octal heater cathode type used as af power amplifier and modulator and as rf power amplifer and oscillator.
May be used with full input up to 60 MHz and with reduced input up to 175 MHz. Class C telegraphy maximum plate dissipation, CCS 20 Wattts, ICAS 25 Watts.
Bulb .......................................... T-12
Base Type ..................................... Large Wafer Octal 8-Pin
EIA Outline ................................... 12-33
EIA Base ...................................... 7CK
Top Cap ....................................... Small C1-1
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.125 A
Pentode
Input ......................................... 13 pf
Output ........................................ 8.5 pf
Grid to Plate ................................. 0.22 pf
Plate-Modulated RF Power Amplifier - Class C (CCS)
Plate Voltage ................................. 480 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... -150 V
Plate Input ................................... 45 W
Plate Dissipation ............................. 13.3 W
Grid No. 2 Dissipation ........................ 2 W
Plate Current ................................. 117 mA
Grid Current .................................. 3.5 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
Plate-Modulated RF Power Amplifier - Class C (ICAS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... -150 V
Plate Input ................................... 67.5 W
Plate Dissipation ............................. 16.7 W
Grid No. 2 Dissipation ........................ 2 W
Plate Current ................................. 125 mA
Grid Current .................................. 4.0 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Plate Input ................................... 60 W
Plate Dissipation ............................. 20 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 125 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 100K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
AF Power Amplifier & Modulator - Class AB1 (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 250 V
Plate Input ................................... 85 W
Plate Dissipation ............................. 25 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 135 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 100K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
AF Power Amplifier & Modulator - Class AB2 (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Plate Input ................................... 62.5 W
Plate Dissipation ............................. 20 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 125 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
AF Power Amplifier & Modulator - Class AB2 (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 250 V
Plate Input ................................... 90 W
Plate Dissipation ............................. 25 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 135 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
RF Power Amplifier & Oscillator - Class C (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... -150 V
Plate Input ................................... 67.5 W
Plate Dissipation ............................. 20 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 140 mA
Grid Current .................................. 3.5 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
RF Power Amplifier & Oscillator - Class C (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 250 V
Negative Grid No. 1 Voltage ................... -150 V
Plate Input ................................... 90 W
Plate Dissipation ............................. 25 W
Grid No. 2 Dissipation ........................ 3 W
Plate Current ................................. 150 mA
Grid Current .................................. 4.0 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 30K Ω
Bulb Temperature (At Hottest Point) ........... 220 °C
Plate Modulated RF Power Amplifier - Class C (CCS)
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 2 Dropping Resistor .................. 33K Ω
Grid No. 1 Voltage ............................ -87 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 27K Ω
Peak Grid No. 1 Voltage........................ 107 V
Grid No. 1 Current ............................ 3.4 mA
Plate Current ................................. 112 mA
Grid No. 2 Current ............................ 7.8 mA
Driving Power ................................. 0.4 W
Power Output (approx) ......................... 32 W
Plate Modulated RF Power Amplifier - Class C (CCS)
Plate Voltage ................................. 475 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 2 Dropping Resistor .................. 51K Ω
Grid No. 1 Voltage ............................ -77 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 27K Ω
Peak Grid No. 1 Voltage........................ 95 V
Grid No. 1 Current ............................ 2.8 mA
Plate Current ................................. 94 mA
Grid No. 2 Current ............................ 6.4 mA
Driving Power ................................. 0.3 W
Power Output (approx) ......................... 34 W
Plate Modulated RF Power Amplifier - Class C (ICAS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 2 Dropping Resistor .................. 56K Ω
Grid No. 1 Voltage ............................ -87 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 28K Ω
Peak Grid No. 1 Voltage........................ 107 V
Grid No. 1 Current ............................ 3.4 mA
Plate Current ................................. 112 mA
Grid No. 2 Current ............................ 7.8 mA
Driving Power ................................. 0.4 W
Power Output (approx) ......................... 52 W
Push Pull AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 190 V
Grid No. 1 Voltage ............................ -40 V
Peak Grid No. 1 Voltage........................ 80 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 63 mA
Plate Current (Maximum Signal) ................ 228 mA
Grid No. 2 Current (Zero Signal) .............. 2.5 mA
Grid No. 2 Current (Maximum Signal) ........... 25 mA
Driving Power ................................. 0 W
Load Resistance ............................... 4K Ω
Power Output (approx) ......................... 55 W
Push Pull AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 185 V
Grid No. 1 Voltage ............................ -40 V
Peak Grid No. 1 Voltage........................ 80 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 57 mA
Plate Current (Maximum Signal) ................ 215 mA
Grid No. 2 Current (Zero Signal) .............. 2 mA
Grid No. 2 Current (Maximum Signal) ........... 25 mA
Driving Power ................................. 0 W
Load Resistance ............................... 5.5K Ω
Power Output (approx) ......................... 70 W
Push Pull AF Power Amplifier & Modulator - Class AB1 (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Voltage ............................ -45 V
Peak Grid No. 1 Voltage........................ 90 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 26 mA
Plate Current (Maximum Signal) ................ 200 mA
Grid No. 2 Current (Zero Signal) .............. 1 mA
Grid No. 2 Current (Maximum Signal) ........... 23 mA
Driving Power ................................. 0 W
Load Resistance ............................... 7K Ω
Power Output (approx) ......................... 82 W
Push Pull AF Power Amplifier & Modulator - Class AB1 (ICAS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -50 V
Peak Grid No. 1 Voltage........................ 100 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 28 mA
Plate Current (Maximum Signal) ................ 229 mA
Grid No. 2 Current (Zero Signal) .............. 1 mA
Grid No. 2 Current (Maximum Signal) ........... 27 mA
Driving Power ................................. 0 W
Load Resistance ............................... 6K Ω
Power Output (approx) ......................... 95 W
Push Pull AF Power Amplifier & Modulator - Class AB1 (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 195 V
Grid No. 1 Voltage ............................ -50 V
Peak Grid No. 1 Voltage........................ 100 V
Grid No. 1 Current ............................ 0 mA
Plate Current (Zero Signal) ................... 23 mA
Plate Current (Maximum Signal) ................ 220 mA
Grid No. 2 Current (Zero Signal) .............. 1 mA
Grid No. 2 Current (Maximum Signal) ........... 26 mA
Driving Power ................................. 0 W
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 120 W
Push Pull AF Power Amplifier & Modulator - Class AB2 (CCS)
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 175 V
Grid No. 1 Voltage ............................ -41 V
Peak Grid No. 1 Voltage........................ 95 V
Grid No. 1 Current ............................ 1.6 mA
Plate Current (Zero Signal) ................... 33 mA
Plate Current (Maximum Signal) ................ 232 mA
Grid No. 2 Current (Zero Signal) .............. 1.1 mA
Grid No. 2 Current (Maximum Signal) ........... 18 mA
Driving Power ................................. 0.2 W
Load Resistance ............................... 3.7K Ω
Power Output (approx) ......................... 62 W
Push Pull AF Power Amplifier & Modulator - Class AB2 (CCS)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 175 V
Grid No. 1 Voltage ............................ -44 V
Peak Grid No. 1 Voltage........................ 102 V
Grid No. 1 Current ............................ 1.9 mA
Plate Current (Zero Signal) ................... 27 mA
Plate Current (Maximum Signal) ................ 242 mA
Grid No. 2 Current (Zero Signal) .............. 0.7 mA
Grid No. 2 Current (Maximum Signal) ........... 18 mA
Driving Power ................................. 0.3 W
Load Resistance ............................... 4.6K Ω
Power Output (approx) ......................... 83 W
Push Pull AF Power Amplifier & Modulator - Class AB2 (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 165 V
Grid No. 1 Voltage ............................ -44 V
Peak Grid No. 1 Voltage........................ 97 V
Grid No. 1 Current ............................ 1.1 mA
Plate Current (Zero Signal) ................... 22 mA
Plate Current (Maximum Signal) ................ 207 mA
Grid No. 2 Current (Zero Signal) .............. 0.6 mA
Grid No. 2 Current (Maximum Signal) ........... 17 mA
Driving Power ................................. 0.2 W
Load Resistance ............................... 6.8K Ω
Power Output (approx) ......................... 90 W
Push Pull AF Power Amplifier & Modulator - Class AB2 (ICAS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 190 V
Grid No. 1 Voltage ............................ -48 V
Peak Grid No. 1 Voltage........................ 109 V
Grid No. 1 Current ............................ 2.0 mA
Plate Current (Zero Signal) ................... 28 mA
Plate Current (Maximum Signal) ................ 270 mA
Grid No. 2 Current (Zero Signal) .............. 1.2 mA
Grid No. 2 Current (Maximum Signal) ........... 20 mA
Driving Power ................................. 0.3 W
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 113 W
Push Pull AF Power Amplifier & Modulator - Class AB2 (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 165 V
Grid No. 1 Voltage ............................ -46 V
Peak Grid No. 1 Voltage........................ 108 V
Grid No. 1 Current ............................ 2.6 mA
Plate Current (Zero Signal) ................... 22 mA
Plate Current (Maximum Signal) ................ 240 mA
Grid No. 2 Current (Zero Signal) .............. 0.3 mA
Grid No. 2 Current (Maximum Signal) ........... 20 mA
Driving Power ................................. 0.4 W
Load Resistance ............................... 7.4K Ω
Power Output (approx) ......................... 131 W
RF Power Amplifier & Oscillator - Class C (CCS)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 170 V
Grid No. 2 Dropping Resistor .................. 36K Ω
Grid No. 1 Voltage ............................ -66 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 27K Ω
Cathode Bias Resistor ...................... 470 Ω
Peak Grid No. 1 Voltage........................ 84 V
Grid No. 1 Current ............................ 2.5 mA
Plate Current ................................. 135 mA
Grid No. 2 Current ............................ 9 mA
Driving Power ................................. 0.2 W
Power Output (approx) ......................... 48 W
Maximum Frequency ............................. 60 MHz
RF Power Amplifier & Oscillator - Class C (CCS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 2 Dropping Resistor .................. 51K Ω
Grid No. 1 Voltage ............................ -58 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 20K Ω
Cathode Bias Resistor ...................... 470 Ω
Peak Grid No. 1 Voltage........................ 73 V
Grid No. 1 Current ............................ 2.8 mA
Plate Current ................................. 112 mA
Grid No. 2 Current ............................ 9 mA
Driving Power ................................. 0.2 W
Power Output (approx) ......................... 52 W
Maximum Frequency ............................. 60 MHz
RF Power Amplifier & Oscillator - Class C (ICAS)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 2 Dropping Resistor .................. 43K Ω
Grid No. 1 Voltage ............................ -71 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 24K Ω
Cathode Bias Resistor ...................... 430 Ω
Peak Grid No. 1 Voltage........................ 91 V
Grid No. 1 Current ............................ 2.8 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 10 mA
Driving Power ................................. 0.3 W
Power Output (approx) ......................... 66 W
Maximum Frequency ............................. 60 MHz
RF Power Amplifier & Oscillator - Class C (ICAS)
Plate Voltage ................................. 750 V
Grid No. 2 Voltage ............................ 160 V
Grid No. 2 Dropping Resistor .................. 56K Ω
Grid No. 1 Voltage ............................ -62 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 20K Ω
Cathode Bias Resistor ...................... 470 Ω
Peak Grid No. 1 Voltage........................ 79 V
Grid No. 1 Current ............................ 3.1 mA
Plate Current ................................. 120 mA
Grid No. 2 Current ............................ 11 mA
Driving Power ................................. 0.2 W
Power Output (approx) ......................... 70 W
Maximum Frequency ............................. 60 MHz
RF Power Amplifier & Oscillator - Class C at 175 MHz (CCS)
Plate Voltage ................................. 320 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 2 Dropping Resistor .................. 13K Ω
Grid No. 1 Voltage ............................ -51 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 27K Ω
Cathode Bias Resistor ...................... 330 Ω
Peak Grid No. 1 Voltage........................ 64 V
Grid No. 1 Current ............................ 2.0 mA
Plate Current ................................. 140 mA
Grid No. 2 Current ............................ 10.0 mA
Driving Power ................................. 3.0 W
Power Output (approx) ......................... 25 W
Maximum Frequency ............................. 175 MHz
RF Power Amplifier & Oscillator - Class C at 175 MHz (ICAS)
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 190 V
Grid No. 2 Dropping Resistor .................. 20K Ω
Grid No. 1 Voltage ............................ -54 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 24K Ω
Cathode Bias Resistor ...................... 330 Ω
Peak Grid No. 1 Voltage........................ 68 V
Grid No. 1 Current ............................ 2.2 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 10.4 mA
Driving Power ................................. 3.0 W
Power Output (approx) ......................... 35 W
Maximum Frequency ............................. 175 MHz
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(c) 1994-2021 by William A. Beech, NJ7P
Mon, 06 Feb 2023 17:59:07 -0700