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Do It Yourself (DIY) paradise for tube and SET project builders.

For those of you not familiar with the 4E27

It's a RF transmitting pentode with a 75 watt plate dissipation and a 5 volt 7.5 amp filament. Expensive beast - $190 'on sale' at Antique Electronics Supply.

What is the supply voltage? Are the supplies of the 'Low DCR' style?

Thanks.


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