augustin87r
New Member
Hello,
I have a Romanian made radio receiver. It has the Communist FM standard: 65-73Mhz which is useless today. I found an article with a new design for the FM unit. The person there doesn't provide the details of MF1. I assumed it's a 10.7 Mhz transformer. I couldn't find the BPF . I have built it, but it doesn't work at all. Can somebody tell me if the schematic is correct and how the MF1 should be built.
In the original schematic, the FM unit is top left, has only 2 transistors. The new one should be connected simmilar to the old block...K3b is the antenna, K9b is point 6 of the old block
I have a Romanian made radio receiver. It has the Communist FM standard: 65-73Mhz which is useless today. I found an article with a new design for the FM unit. The person there doesn't provide the details of MF1. I assumed it's a 10.7 Mhz transformer. I couldn't find the BPF . I have built it, but it doesn't work at all. Can somebody tell me if the schematic is correct and how the MF1 should be built.
In the original schematic, the FM unit is top left, has only 2 transistors. The new one should be connected simmilar to the old block...K3b is the antenna, K9b is point 6 of the old block