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Old 9th Oct 2019, 9:37 pm   #15
Aub
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Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,034
Default Re: ECF82 frequency changer

I don't understand the bit about independent oscillator tuning. Frequency changers normal require ganged tuning caps for the oscillator and the RF stage, otherwise it won't maintain the sum or difference required by the i.f transformer, or am I missing something?
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