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matching tubes

Discussion in 'Worldwidedx.com Amateur Radio Club' started by 517 Leroy, Sep 12, 2018.

  1. 517 Leroy

    517 Leroy New Member

    Sep 1, 2018
    Likes Received:
    How important is all matching tubes? I got a Scout 20 8 tuber in trade, works good but has different brand tubes.

    #1 517 Leroy, Sep 12, 2018
    Last edited: Sep 12, 2018
  2. 543_Dallas

    543_Dallas Sr. Member

    Jul 25, 2011
    Likes Received:
    It would be ideal if they were all matched with a tube tester but it will work fine with different brands in it as long as they all are good tubes. Sweep tubes are too scarce and expensive to be picky.

    Some of the local guys went out and bought tube testers. I repaired one sweep tube amp and found that if you hold an am carrier for several seconds the good tubes start to turn red faster than the weak ones and the duds do nothing. Don't over do it though. Sweep tubes have paper thin anodes.
    Shadetree Mechanic and 517 Leroy like this.

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