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G8HQP Dave · 9th Oct 2019, 11:18 am

I think it is just an error. Given the circuit as it stands, you would need to add a low value capacitor from the triode cathode to the pentode grid (or possibly the pentode cathode).

9th Oct 2019, 11:18 am	#3
G8HQP Dave Rest in Peace Join Date: Sep 2008 Location: Solihull, West Midlands, UK. Posts: 4,872	Re: ECF82 frequency changer I think it is just an error. Given the circuit as it stands, you would need to add a low value capacitor from the triode cathode to the pentode grid (or possibly the pentode cathode).