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Sideband · 11th Oct 2010, 5:34 pm

Those are the same circuits I have although my RSGB edition is slightly later dated June 1969. They give the value of the RF choke in the 12AU7 (ECC82) circuit as 1.5 to 2.5mH. Should be dead easy to build that into an exsiting receiver.

SB

11th Oct 2010, 5:34 pm	#18
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,566	Re: Product detector circuit Those are the same circuits I have although my RSGB edition is slightly later dated June 1969. They give the value of the RF choke in the 12AU7 (ECC82) circuit as 1.5 to 2.5mH. Should be dead easy to build that into an exsiting receiver. SB __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....