Thread: Heathkit impedance bridge model IB-28 manual needed
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Old 11-26-2011, 08:22 PM
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JohnHacker1 JohnHacker1 is offline
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Not sure if these are still around:

www.tech-systems-labs.com/heathkit.htm
www.vintage-radio.info
www.d8apro.com/heath3.htm

Good luck!
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