The 4CX3000A is a metal-ceramic, forced air-cooled tetrode with a thoriated tungsten cathode. At an operating frequency of 150MHz, the anode dissipation power is 3500W. The tube is mainly used in class AB1 linear amplifier on audio frequency or radio frequency applications, for its quality of low intermodulation distortion makes it suitable for single sideband service. It’s also used on class C rf power amplifier and anode-modulated rf power amplifier.
Specifications:
Filament Voltage……9V
Filament Current……41.5A
Amplification Factor……5.5
Interelectrode Capacitances (cathode-grounded)
Input……130pF Feedback……1pF Output……12.5Pf
Weight……2.5 kg, Height……201mm, Maximum Diameter…… φ118mm
Mounting……Upright
Cooling……forced air
Shell Temperature……250℃
Maximum ratings (class C RF amplifier):
Anode voltage...7kV
Anode current...2A
Maximum ratings (class C modulated RF amplifier):
Anode voltage...5kV
Anode current...1.4A
Typical operation
Anode voltage......5000v
Grid 2 voltage……500v
Anode current……1.4A
Driving power……31w
Anode output power……5750w
Typical operation
Anode voltage......7000v
Grid 2 voltage……500v
Anode current……1.9A
Driving power……41w
Anode output power……11kw
