805

805 has no equivalent designation confirmed by the archive.

Description

The 805 is a plate-modulated R.F. power amplifier intended for Class C telephony service. It has an amplification factor of approximately 50 and a grid-to-plate transconductance of 4800 micromhos at 100 mA. Its interelectrode capacitances are 6.5 μμf grid-to-plate, 6.5 μμf grid-to-filament, and 1.5 μμf plate-to-filament.

Ratings

The tube carries maximum ratings of 1500 volts D.C. plate voltage, 150 mA D.C. plate current, 125 watts plate dissipation, 315 watts plate input, and -400 volts D.C. grid voltage. At a plate voltage of 1250 volts, the maximum D.C. plate current is 175 mA and the maximum plate dissipation is 85 watts. At a plate voltage of 1500 volts, the maximum D.C. plate current is 210 mA and the maximum plate dissipation is 125 watts.

Original manufacturer datasheets for 805, 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