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Shockwave, it didn’t help that the shaft coupler for Tune/ plate cap spun without turning shaft on variable capacitor. Also the load cap was a air variable that only went up to 100pf with a 100pf doorknob in parallel with it. The Tune cap by the way only went up to 38pf. Granted you have some anode capacitance to add to that. But in order for it to work right, the circuit had to have a Q of 10. Assuming the plate voltage was 2200vdc. Which I haven’t been able to check yet. Needless to say this amp was Fubar’ed.

[QUOTE="Crusher, post: 754233, member: 3746"] Shockwave, it didn’t help that the shaft coupler for Tune/ plate cap spun without turning shaft on variable capacitor. Also the load cap was a air variable that only went up to 100pf with a 100pf doorknob in parallel with it. The Tune cap by the way only went up to 38pf. Granted you have some anode capacitance to add to that. But in order for it to work right, the circuit had to have a Q of 10. Assuming the plate voltage was 2200vdc. Which I haven’t been able to check yet. Needless to say this amp was Fubar’ed. [/QUOTE]

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