Title: 4X500A Author: Eimac Subject: JA-FP-2003-12-01 Created Date: 12/1/2003 9:09:01 PM

The 4X150D tetrodes are compact power tubes intended for use as amplifiers, oscillators, or frequency multipliers at frequencies up to 500 megacycles. They are designed for operation at a heater potential of 26.5 volts. 4X150A / 7034 Ceramic/Glass Transmitting Tube. New Old Stock. Various USA Brands, Limited Quantity Available, New Old Stock.

- 120 4X500A 1050 110 827R RCA POWER -.UBE GUIDE 2 RADIO CORPORATION OF AMERICA Electronic Components and Devices Harrison, N. J. RCA POWER TUBE GUIDE VACUUM-POWER-TUBE SERVICE (Coned) TYPICAL OPERATION POWER RCA TYPE OUTPUT APPROX. WATTS FREQ. MHz 1350 600 4618 1350 600 7213 1440° 30 8338 ...

The 4X500A is an external-anode tetrode having a maximum plate dissapation rating of 500 watts. It's small size and low inductance leads permit efficient operation at relatively large outputs well into the VHF region.

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Tube 4X500A or Röhre 4X500A ID21995, Transmitting Tetrode, air cooled, SPECIAL TUBEBASE in general and VHF shown. Radio tubes are valves.

Beam Transmitting Tetrode VHF - air cooled - Special Tubebase - Connection at the top - Integral radiator, special 4-pin base with metal ring connected to G2 - Glass or ceramic spacer depending upon manufacturers - 500 W max plate dissipation with forced air cooling - 120 MHz max frequency full ratings, up to 250 MHz at reduced ratings.

VHF beam power tube. 5 V at 13 A thoriated tungsten filament. 4-pin special base. Integral radiator suitable for forced-air cooling. 500 W max plate dissipation, 120 MHz max full-input …

The 4X500A is a 500 watt tetrode with full ratings to 120 MHz. Developed by Eimac, they were also made by RCA, Westinghouse (WL-4X500A) and others. This tube was used in television and FM transmitters.

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