A Heathkit IG-72 Signal Generator Part 1 - Observations.
I picked up a nice example of a Heathkit IG-72 audio (sine) generator at a small hamfest in Piketon, Ohio. It seemed to need relatively minimal repair to get it back in operation. This is part 1 of a series, it's observations and basic checks on the instrument to see how it's working before deciding if any repairs are needed.