HK-257C

The HK-257C is a 125 watt dissipation pentode that is similar to the 4E27A. It has a septar base and full ratings to 125 MHz.

Length = 6.20" Diameter = 2.75"
Max voltage = 4000
Max current = 225 ma
Fil voltage = 5
Fil current = 7.5 amps         GOTO INDEX