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Heathkit TC-3 Tube Checker - Tube Data

Discussion in 'General Technical Questions and Answers' started by KB3NRY, Jun 1, 2008.

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  1. KB3NRY

    KB3NRY Ham Member QRZ Page

    Hey all!

    I recently got a Heathkit TC-3 tube checker. The checker has a scrolling list of tubes and the settings. Unfortunately, this doesn't cover every tube. I have however found supplementary data sheets for the Heathkit TC-1, TC-2 and some other charts for other Heathkit radios. These have a much larger list of tubes and the settings.

    My question is, are these settings the same on most testers? Can I use the same settings for my tester to test those tubes? Will the letter switches do the same for the TC-3 as the TC-1 and even IT-17, IT-21, and IT-3117?

    Is there a difference between tube checkers and tube testers? If so what?

    Thanks in advance.
  2. W9GB

    W9GB Ham Member QRZ Page

  3. AG3Y

    AG3Y Guest

    Contact the fellows at the Jacksonville Antique Radio Society ( J.A.R.S.) They have lots of different tube checkers, and can give you additional information on how to obtain charts, etc.

    Here is their link:

    good luck! 73, Jim
  4. KB3NRY

    KB3NRY Ham Member QRZ Page

    Thanks for the info guys.

    w9gb, thanks for the info. Thats all I'd been able to find. I was trying to find out if the supplementary charts for the other testers would work because I have found charts for them with a lot more tubes.

    Thanks for the contact info. I'll try to get a hold of them and see what they can help me with.
  5. WA2CWA

    WA2CWA Ham Member QRZ Page

    All three testers, TC1, TC2, and TC3 are emission type testers. The schematics show major circuitry to be identical or fairly close. The TC3 has one or two additional sockets on it. The supplemental tube chart for the TC1/TC2/TC2P, dated 10/76, should add a lot more tubes that you can test.

    Pete, wa2cwa
  6. KB3NRY

    KB3NRY Ham Member QRZ Page


    Sounds great! Thats awesome to hear. I've found some very good supplementary tube charts for the other tube checkers.

    Do you or anyone know if the charts for IT-17, IT-21, and IT-3117 would work? I've found 29 pages of tubes and the information needed to test for those.

    EDIT: Now that I've printed out the lists for the TC-1, TC-2, and TC-2P, it looks like I shouldn't need the IT lists. I've got 12 pages of tubes so I think it should cover plenty. If I find a tube not on the list, then I'll do some more research.

    Thanks all for your help.
    Last edited: Jun 1, 2008
  7. WA2CWA

    WA2CWA Ham Member QRZ Page

    The supplemental tube chart manual for the TC1, TC2, TC2P, that I have listed on my web site is approx. 58 pages.

    Pete, wa2cwa
  8. picturevalve

    picturevalve QRZ Member



    I just got a Heathkit TC-3 and need the charts. Do you have them available to share? The tubes I want to test are 12AX7, EL84, and GZ34 but dont know the settings.
  10. AG3Y

    AG3Y Guest

    See post #3 above !
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