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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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PostPosted: 24 Apr 2014, 15:21 
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Joined: 03 May 2011, 15:16
Posts: 182
Location: Romania,Iasi City
Hello everybody!!

I am interested in building this design for MW and LW.

1tube & 2IC Super Hetrodyne Radio

I got the IC and the valve.

I have all the coils on a PCB with FM-LW-MW from a radio.cass.

The problem is the coils. Which type of coils should be used? The yellow core is 1st AM IF, the white is 2nd stage AM IF and the black is 3rd AM IF stage. The two coils should be the same for example (yellow-Filter-yellow) or not? (for example yellow-Filter-black).. Another problem is how can I know the numbering of those coils and the hot end and cold end of each section?

Thank you!

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