810

810 has no equivalent designation confirmed by the archive.

The 810 is a transmitting triode, as given in the RCA datasheet. It uses a thoriated-tungsten filament rated at 10 volts.

Construction

The 810 has a T-20 bulb, with an overall length of 8-1/2 inches plus or minus 1/4 inch and a seated length of 8-3/16 inches plus or minus 1/4 inch. Its maximum radius is 2-1/8 inches plus or minus 1/8 inch. The tube is fitted with a skirted medium top cap and a medium side cap, and uses a medium metal-shell jumbo 4-pin bayonet base. The basing designation for bottom view is 201. On the base, pin 2 is the filament, and the grid connection is the side cap. The 810 can be mounted vertically, base down, or horizontally with pins 1 and 2 in a vertical plane.

Ratings

For Class B AF power amplifier and modulator service, the RCA datasheet lists a CCS maximum DC plate voltage of 2000 volts and an ICAS maximum DC plate voltage of 2500 volts. In this service, the CCS maximum plate dissipation is 125 watts, and the ICAS maximum plate dissipation is 175 watts.

For Class C RF power amplifier and oscillator telegraphy service, the RCA datasheet lists a CCS maximum DC plate voltage of 2000 volts and an ICAS maximum DC plate voltage of 2500 volts. In this service, the CCS maximum plate input is 500 watts, the CCS maximum plate dissipation is 125 watts, and the ICAS maximum plate dissipation is 175 watts.

Applications

The RCA datasheet also gives typical operating conditions for Class C plate-modulated RF power amplifier telephony service.

Original manufacturer datasheets for 810, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• TRANSMITTING TRIODE