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Vacuum tubes improved in China

Discussion in '"Boat Anchor" & Classic Equipment' started by W5INC, May 27, 2019.

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  1. AD5HR

    AD5HR Ham Member QRZ Page

    I have several 6V6, 6SN7, and a 6L6G (ST envelope) tube with the
    same coating, they are all good.
    Just for kicks, I sometimes plug the 6L6G into a Fender Champ clone.
  2. W8AAZ

    W8AAZ Ham Member QRZ Page

    I was looking in an old QST and a particular manufacturer of SSB transmitters claims in their ads that they passed on the 6146 tubes and went with audio tubes, 6550, I think, due to distortion issues. They found the audio tube worked really good at HF as an amplifier and the better linearity reduced distortion as they were used as linear amplifiers in the SSB transmit scheme as opposed to class C finals such as a CW or plate modulated AM rig.

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