HFU HF Underground
Technical Topics => The RF Workbench => Topic started by: ThaDood on February 19, 2026, 1656 UTC
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https://www.kennetron.com/ Now, if there was only someone who could figure out how to rebuild Amateur level tubes. Those 3-500's are pretty pricey today, and 572's are certainly getting there.
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Better learn how to blow glass and get some thoriated tungsten....Because that's what I'm going to have to do to keep my old rigs running.