DIODE, SHARP CUTOFF PENTODE
The 1U5 Vacuum Tube is a miniature type used as combined
detector and AF voltage amplifier in lightweight,
compact, portable, battery-operated receivers. They
require a miniature 7-contact socket and may be mounted
in any position.
Electrical Data:
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.05 A
Preferred Substitutes ..................... 1DN5
Substitutes ............................... 1AS5