Dear Gary, LF Group, An image of 518kHz at 506kHz implies LO = 512kHz? You could change the LO frequency to 500kHz, although then you would not be able to receive signals on that spot frequency. You
Hi Gary see the "notch" I designed for Hugh to reduce DCF39 a little at http://www.alan.melia.btinternet.co.uk/BR-t-Notch.htm The plot will give some idea of the possible reduction in wanted signal.
Dear Gary, LF group, Since this kind of notch filter has other useful applications too, I had a go at designing something useable from available bits. I used an IF transformer from an ancient transis
