Twin Beam Power Pentode
Various Brands
The 5894 / AX9903 Vacuum tube is a small, heater-cathode
tube used in AF and RF power amplifiers. It is also used
in oscillator frequency multiplier service at frequencies
up to 500 MHz.
The 5894 tube requires a septar seven-contact socket and
may be operated in a vertical position, base up or down,
or horizontal position with the plate terminals in a
horizontal plane.
Electrical Data:
Heater Voltage ............................. 6.3/12.6 V
Heater Current .............................. 1.8/0.9 A
Preferred Substitutes .................... AX9903,
RS1009.