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Supersonic Heterodyne radio 1920's.
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15th Mar 2018, 11:43 am
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vinrads
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Join Date: Feb 2009
Location: Chesterfield, Derbyshire, UK.
Posts: 3,762
Re: Supersonic Heterodyne radio 1920's.
Hi back to the Supersonic Heterodyne the question is how does it work ,and it works very well with -2 volts on the anode.Mick.
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