[Amps] alpha 76a

[budi santoso]

Hi
I am restoring an alpha 76a 2 tube version, which I got in bad condition.
After repairing  power supply and control circuit I am able to run the linear amp.

The working condition for 2 3cx400a are :

Pout        Pin        Vanode    Ianode    Igrid     Eff.
watt        watt        volt           mA        mA       %

1000          85        2000        720        30        70
800            65        2050        600        22        65
600            50        2000        520        15        55
400            35        2000        400        10        48

Power output and input measured using Bird with 1000w and 250 W slug, I think accurate.
Voltage and current measured using internal meter ( I have no equipment to callibrate )

Is the tube condition good enought ?

Thank's

Budi
YB1BS