Hallicrafters HG-1 Signal Generator Restoration

Discussion in '"Boat Anchor" & Classic Equipment' started by W3KW, Nov 15, 2021.

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  1. W3KW

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    I am starting a restoration of a Hallicrafters HG-1 Signal Generator. Like all the Hallicrafters designs, this one appears very well done. Mine is in great shape and will be used to align, you guessed it, a Hallicrafters receiver. My winter project is an SX-101A restoration. It's already in great shape, but just needs some new components and alignment to make it a 10 out of 10, once again.


    I'm sourcing components for the HG-1, including feed-through caps that were used on the line cord. The one drawback to the design of the HG-1 is the AC power. The line cord is fed through a small box mounted on the back with a soft, metal grommet and a knot in the cord for strain relief. Not ideal by any standards. The line cord is then soldered to the feed-through caps which feed the on/off section of a pot on the front panel and the main transformer. My goal is to replace the line cord with a polarized cord, 2-wire. No ground. I was considering a this:



    I found a polarized cord, but for the life of me, I cannot find the polarized, female, panel mount receptacle. Obviously, I found the non-polarized version. Very frustrating with the interweb at my fingertips! Any ideas where to find them? If I'm successful at converting the power set up, which will include an internal fuse of 1A, I will need to replace the feed-through caps with internally mounted caps to block RF. Any suggestions/tips there would be welcome.

    Anyway, here are some before photos and some support materials for anyone interested in the signal generator. When it's finished, I'll post an update with photos and test results. I've already added a BNC for RF out as the original merely had a test lead pass-through.









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