The electron tube 4CX20000C is a high-performance ceramic/metal power tetrode designed for audio and radio frequency application

The electron tube 4CX20,000C is a high-performance ceramic/metal power tetrode designed for audio and radio frequency applications. It is particularly well-suited for use in VHF FM broadcast transmitters. It is also recommended for rf linear power amplifier service. The anode dissipation is 20KW with forced-air cooling.

It features a type of internal mechanical structure which results in high rf operating efficiency. Low rf losses in this structure permit operation at full ratings to 110 MHz.

 

GENERAL CHARACTERISTICS

ELECTRICAL

Filament:               Thoriated Tungsten Mesh

Voltage                                  10.0± 0.5 V

Current at 10.0 Volts                      140 A

Amplification Factor, Average, Grid to Screen  

6.7

Direct Interelectrode Capacitances

(grounded cathode)

Cin                                         195 pF

Cout                                      22.7 pF

Cgp                                       0.6 pF

Direct Interelectrode Capacitances

(grounded grid and screen)

Cin                                        87.4 pF

Cout                                      23.1 pF

CPK                                      0.08 pF

Maximum Frequency for Full Ratings (CW)

110 MHz

MECHANICAL:

Maximum Overall Dimensions:

Length                            9.84 in; 24.99 mm

Diameter                         8.86 in; 22.50 mm

Net Weight                     20.0 lbs. 9.06 kg

Operating Position   Vertical, Base Up or Down

Maximum Operating Temperature:

Ceramic/Metal Seals                    250°C

Anode Core                                250°C

Cooling                                      Forced Air

Base                                 Special, Coaxial

Update Date:2011-02-15 02:57:10

electron tube 4CX20000C