• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Heathkit IT-17 Tube checker

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tailspn

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Joined 2003
Anyone have experience with one? I have one, but without the manual, and have a operation question. The switch setup for every tube part number has a code which I can't figure out. The switch identifying letter (if used for testing a particular tube) is either shown in light print, or bold print, or grouped with another switch(s) within parenthesis. What do these diferent ways of showing the switch identifiers mean?:confused:

Thanks
Tom
 
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