Hi Here is the small 6kB file showing the circuit diagram for the modification. The board "S45035-D5142-.."(Ausgangsteil) has a simple BJT product detector and BFO. The BFO frequency is tuned with 22
Hi The board "S45035-D5142-.."(Ausgangsteil) has a simple BJT product detector and BFO. The BFO frequency is tuned with 2250pF and it is shifted by S4, possibly shifting it 1.85 below and above 100kH