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AL-811 Low Power out 10 Meter band

Discussion in 'Amateur Radio Amplifiers' started by KJ4AQU, Apr 16, 2012.

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  1. KJ4AQU

    KJ4AQU Ham Member QRZ Page

    Tuner on tuner off only about 300 watts. Any suggestions?
     
  2. AG6K

    AG6K Ham Member QRZ Page

     Increase the diameter of the Cu tubing used for the 10m L. A good example of an amplifier design that did it right to compensate for RF skin effect is the Kenwood TL-922. . . . Are all of the filaments lit?
     
  3. W6JPK

    W6JPK Ham Member QRZ Page

    I also had the same problem and was not even able to hold 300 watts on 10 and 17 meters. I purchased an adjustment tool from MFJ to adjust the slugs in the rear of the amp. I found instructions on how to make these adjustments using search on the internet. I now get 400 plus watts on both bands...
     
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