Hi guys, I have seen some schematics and I've got a question:

At the input of SB, do I put a IF freq about 25KHz? If the SB is about
48KHz, I get the IF and they change into a two signals I & Q about 25KHz.

455KHz - 1720 KHz (LO 4x) = 25KHz I & Q

Is it correct? I hope I don't miss on this.

73





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