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A horizontal ribbon.

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A horizontal ribbon.

2E24
Beam Power Pentode

EIA Base & Outline

EIA Base: 7CL
Source ........................................ RCA TT-5 - 1962

Application

Source ........................................ RCA TT-5 - 1962
Glass-octal type having quick-heating coated filament used as af power amplifier and modulator and as rf power amplifier and oscillator in mobile- and emergency-communications equipment.

Source ........................................ RCA TT-5 - 1962
May be used with full input up to 125 MHz and with reduced input up to 175 MHz. Class C Telegraphy maximum plate dissipation, CCS 10 watts, ICAS 13.5 watts.

Source ........................................ RCA TT-5 - 1962
Requires octal socket and may be operated in vertical position with base up or down, or horizontal position with pind 3 and 7 in vertical plane.

Mechanical Data

Source ........................................ RCA TT-5 - 1962
Bulb .......................................... T-9
Base Type ..................................... Octal
EIA Outline ................................... 9-24
Maximum Overall Height ........................ 3.656 In.
Maximum Seated Height ......................... 3.094 In.
Maximum Diameter .............................. 1.313 In.
EIA Base ...................................... 7CL

Electrical Data

Source ........................................ RCA TT-5 - 1962
Filament Voltage .............................. 6.3 V
Filament Current .............................. 0.65 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA TT-5 - 1962
Input ......................................... 8.5 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.11 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA TT-5 - 1962
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Plate Dissipation ............................. 13.5 W
Grid No. 2 Dissipation ........................ 2.5 W

Characteristics and Typical Operation

Class C Modulated Amplifier (Plate)
Source ........................................ RCA TT-5 - 1962
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 2.5 mA
Plate Current ................................. 54 mA
Grid No. 2 Current ............................ 8 mA
Driving Power ................................. 0.16 W
Power Output (approx) ......................... 18 W

Push Pull Class AB2 Amplifier
Source ........................................ RCA TT-5 - 1962
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -15 V
Peak Grid No. 1 Voltage........................ 82 V
Plate Current (Zero Signal) ................... 20 mA
Plate Current (Maximum Signal) ................ 150 mA
Grid No. 2 Current (Zero Signal) .............. 0.6 mA
Grid No. 2 Current (Maximum Signal) ........... 28 mA
Driving Power ................................. 0.46 W
Load Resistance ............................... 9K Ω
Power Output (approx) ......................... 54 W

Class C Oscillator/Amplifier
Source ........................................ RCA TT-5 - 1962
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 195 V
Grid No. 1 Voltage ............................ -50 V
Peak Grid No. 1 Voltage........................ 71 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 66 mA
Grid No. 2 Current ............................ 10 mA
Driving Power ................................. 0.21 W
Power Output (approx) ......................... 27 W

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 25 Jun 2022 09:09:03 -0700