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Recently I have noted that two of my three Zenith Transoceanic radios don't like line voltage (I think 120V). However, if I use my variable supply that is plugged into an isolation transformer they play wonderfully. The third, which is the later and final tube design (model 600) and employs a current limiting tube works fine off the line. I'm not really sure what is going on with this. It's not a real bother as I have heard that it is best to run these radios either on DC or as I mentioned on a reduced voltage due to the delicate 1.4V tube filaments. They are very easy to open and one of the tubes is pretty pricey.
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"Face piles of trials with smiles, for it riles them to believe that you perceive the web they weave, and keep on thinking free"
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