This tube utilizes a ruggedized internal structure and utilizes a welded anode cap for improved reliability. The 4CX250FG/8621 has a maximum plate dissipation rating of 250 watts and a maximum input power rating of 500 watts.

2012年4月20日 · 4CX250B ceramic vacuum tube. It’s a cute little thing. These were often used for driver tubes in FM broadcast transmitters. With the naming conventions of ceramic tubes, we can tell quite a bit about the unit without even looking at the datasheet.

Tube 4CX250B or Röhre 4CX250B ID18711, Transmitting Tetrode, air cooled, SPECIAL TUBEBASE in general and UHF shown. Radio tubes are valves.

2006年6月19日 · The 4X150A tube will work, but you should probably run only on Low side. It's rated to run only at a lower temperature, because that one is made with metal and glass. The letter "C" in 4CX" means "ceramic". The 4X150 and 4CX250 types have the same parts inside them, but the '250 just takes more heat before the ceramic is damaged.

The 7203/4CX250B is designed to operate with a heater voltage of 6.0 volts, while the 8621/4CX250FG is designed for operation at a heater volt- age of 26.5 volts. Otherwise, the two tube types have identical charac- teristics.

Division 01 Varian C AR LOS The 4CX250R is a compact, high-perveance radial-beam tetrode designed specifi- cally for use in class-ABI linear amplifiers where shock and/or vibration preclude the use of non-ruggedized tube types.

The Penta 4CX250B/M is a forced-air cooled, 250-watt plate dissipation, external anode, ceramic and metal radial beam tetrode. The superior construction of the 4CX250B/M makes it ideal for use as a grid driven RF amplifier or oscillator, or an AF power amplifier or modulator.

The 4CX250B/7203 has a maximum plate dissi-pation rating of 250 watts and a maximum input power rating of 500 watts. The 4CX250B/7203 is designed to operate with a heater voltage of 6.0 volts. Plate Dissipation (Max.) Screen Dissipation (Max.) Grid Dissipation (Max.)

Made by Eimac, branded as GE 4cx250B=7203 $249.99 On sale! Just $229.99. * 30 Day Rock Solid Warranty on ALL NOS Tubes! Read more.

YC-136 Eimac Ceramic Transmitting Tube (4CX250B) (Pull) This tube is an improved version of the 4CX250B, with slightly higher average gain. This tube has been tested, and is electrically similar to a NOS tube at 95%-100%. There may be some minor scratches or discoloration indicating that the tube had been in a socket