Tube DIY Asylum

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Have you tried the 7360?

Posted by Triode Kingdom_ on July 10, 2004 at 00:53:36:
That's another beam deflection (sheet beam) tube, and it was well known to hams and RF engineers during the '60s. Squires-Sanders used it as the product detector in their flagship receiver, the SS-1R. The 7360 was responsible in no small part for the excellent performance (linearity and dynamic range) they achieved.