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Ameritron 811x

Discussion in 'Amateur Radio Amplifiers' started by M0TRJ, Mar 2, 2018.

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  1. M0TRJ

    M0TRJ Ham Member QRZ Page

    i only have 2 working valves Roger i did send you an email
  2. G3YRO

    G3YRO Ham Member QRZ Page

    Ah OK . . .

    Hope your new valves arrive soon.

    Roger G3YRO
  3. WB1E

    WB1E Ham Member QRZ Page

    There is D-16 also. Had the same issue with a friends AL811H. High input SWR. This amp is so hard to work on. W8JI, love ya bro, but arrgh. New tubes did change anything~

    I gave it back to my friend, ready to send back to the factory~

    Good luck.
  4. M0TRJ

    M0TRJ Ham Member QRZ Page

    Ok Roger i have three NOS OTK Russian tubes in it now it shows a plate current of 1.3k not the suggested 1.7k in the manual thats on standby
  5. G3YRO

    G3YRO Ham Member QRZ Page

    A Plate Voltage of 1.3kV you mean . . .

    What happens to the PA current and the Grid Current readings when you switch the Amp to Transmit?

    Roger G3YRO

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