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Tuesday, March 25, 2008

K2GXT: Henry 2K-3 Linear Amplifier Restoration

After almost selling the clubs Henry 2K-3 legal limit (1.5 KW), we have decided to fix it up at use it. The Henry is from the late 60's to 70's and is a floor amplifier. It uses two 3-500Z tubes to produce 1,500 watts in the HF bands easily.

We know that there are a few problems.

  • Panel Meter (right) is missing.
  • High Voltage is low @ 2,100 volts (should be between 2,800 and 3,100 volts)
    • Possibly an uncalibrated meter, or a mix of both
I will post pictures and other info as we get more information! Stay tuned for more updates about the project!

1 comment:

  1. Hi OM, I have been using a 2k-3 for years. Fantastic amp. My voltage indication is a little low as well. I run at about 2,600 V indicated, and that is with the calibration pot all the way over. I always suspected that there was some R drift in the voltage divider and never gave it too much additional thought! Don't expect to run break-in cw, and some of the other components may need a little TLC. Pls feel free to ask for experience with this amp if needed. 73 . Joe, AJ2Y

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