Beam Power Tube
The 7558 Vacuum tube is a miniature type used as a class
C RF amplifier, oscillator and frequency multiplier up
to 175 MHz in mobile communications equipment. It
requires a miniature 9-contact socket. Except for heater
rating, it is identical with 7551.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.8 A