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6HF5
Beam Power Pentode

Base & Bulb ( RCA RC-29 - 1975)

Substitute Data

Substitutes ................................... 6GV5

Application

Duodecar type used as horizontal-deflection amplifier in color and bw tv receivers. Requires duodecar 12-contact socket.

Mechanical Data

Bulb .......................................... T-12
Outline ....................................... 12-89
EIA Base ...................................... 12FB

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 2.25 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 24 pf
Output ........................................ 10 pf
Grid to Plate ................................. 0.56 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 900 V
Grid No. 2 Voltage ............................ 190 V
Plate Dissipation ............................. 28 W
Grid No. 2 Dissipation ........................ 5.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 175 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -25 V
Plate Resistance (approx) ..................... 5.6K Ω
Transconductance .............................. 11.3K µ
Plate Current ................................. 125 mA
Grid No. 2 Current ............................ 4.5 mA
Driving Power ................................. 1000 W

Characteristics and Typical Operation

Class C Amplifier [ARRL-71]
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 140 V
Grid No. 1 Voltage ............................ -85 V
Plate Current ................................. 232 mA
Grid No. 2 Current ............................ 12.5 mA
Power Output (approx) ......................... 77 W
Maximum Frequency ............................. 60 MHz

Characteristics and Typical Operation

Class AB1 Amplifier [ARRL-71]
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 140 V
Grid No. 1 Voltage ............................ -46 V
Plate Current (Zero Signal) ................... 40 mA
Plate Current (Maximum Signal) ................ 133 mA
Grid No. 2 Current ............................ 4.5 mA
Power Output (approx) ......................... 57.6 W
Maximum Frequency ............................. 60 MHz

Characteristics and Typical Operation

Hortz Defl Amplifier
DC Plate Supply Voltage ....................... 900 V
Peak Positive-Pulse Plate Voltage ............. 7500 V
Peak Negative-Pulse Plate Voltage ............. 1100 V
DC Grid No. 2 Voltage ......................... 190 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 250 V
Average Cathode Current ....................... 315 mA
Peak Cathode Current .......................... 1100 mA
Plate Dissipation ............................. 28 W
Grid No. 2 Dissipation ........................ 5.5 W

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