>Hi all - I downloaded the Svetlana data sheet on the 572B so I could study
>it. Some
>interesting facts came to light.
>
>grid to plate = 6.0pF
>grid to filament = 5.9pF
>Plate to filament = 0.8pF
>
>I guess if the grid isn't totally, solidly, held to chassis and everything
>else using low
>inductance grounding then this tube will make a superb oscillator!!
>Almost perfect as a
>Colpitts power oscillator.
? The critical question is: What is the measured grid-resonance when
the grid is solidly held to the chassis?.
>......
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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