Testing tubes
Testing the tubes. Turns out that the original tubes were all Sylvania. So all of the tubes have been replaced at some point...
Video of the restoration process
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Alignment
Starting on the alignment. Looks like the 455khz crystal has drifted to 452.6khz. The alignment will correct for the drift. The drift is normal, due to the age of the crystal. 65 years and counting
Alignment part 2
Did a full IF and RF alignment on the NC-98. It took 2 or 3 hours. All the repairs worked including the new trimmer capacitor. Its working excellent!
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