800

800 has no equivalent designation confirmed by the archive.

Description

The 800 is a transmitting tube intended for use as a plate-modulated R-F power amplifier in Class C telephony and as an R-F power amplifier and oscillator in Class C telegraphy. It is also rated as a Class B audio-frequency power amplifier and modulator. The tube has a thoriated-tungsten filament.

Construction and Ratings

The 800 has a medium 4-pin bayonet base and uses a thoriated-tungsten filament rated at 5 volts a-c or d-c and 3.1 amperes. Its amplification factor is 15. Grid-to-plate capacitance is 2.5 uuf and grid-to-filament capacitance is 0.8 uuf. For Class C telegraphy service, maximum ratings are 35 watts plate dissipation, 100 watts plate input, and 1250 volts D-C plate voltage. For Class C telephony service, the maximum D-C plate voltage is 1250 volts and the maximum plate dissipation is 35 watts.

Operating Notes

The RCA Victor Division datasheet for the 800, dated SEPT. 11, 1933, specifies the RCA socket number 9937. The datasheet also indicates that data on operating frequencies are given on the sheet TRANS. TUBE RATINGS vs. FREQUENCY.

Original manufacturer datasheets for 800, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• PLATE-MODULATED R-F POWER AMPLIFIER - Class C Telephony