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, "norm_n_tam" <norm_n_tam@...> wrote:
> [quote,"kyoritsu"]BTW, I'm still having trouble taming the 6J6A regen. With no antenna at all, it's so sensitive that just moderately strong signals overload the detector.[/quote]
> You may wish to look at this site:
> It shows how to build a 6J6 (or ECC91 in Europe) regen that uses just 12v for the anode/plate! Since the mu of the 6J6/ECC91 is so high, it can be used with low voltages!
Hi Norman, thanks for the interesting link. I can't read German, but I'll put it through the Google translator and see.
'Grid feedback', they call it. To me, it seems that the detected audio is immediately sent to the audio stage, bypassing the gain the grid leak detector provides. I don't see what the advantage is. Have to read the notes.
The problem with the 6J6 was getting the signal into the tank without overloading it. This often seems to be a problem with regens. I usually find a coupling coil, often just a single link, is the best, along with a RF attenuator. Oh, also shielding the tank helps, although I don't like to do that. I like to see the parts.