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Tube Substitutions for:
1AK4
Sharp-Cutoff RF Pentode
TypeSubstitutesBase Diagram
1AK41AH4, 5875, 1AH4*1AK4
Notes:* - Parallel filaments
Web References1AK4 (Raytheon) @ Franks Electron Tubes
1AK4 @ RadioMuseum.org


Type 1AK4
Sharp-Cutoff RF Pentode



MECHANICAL DATA

Basing1AK4


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage1.25Volts
Heater Current0.02A


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