Quote:
Originally Posted by DrTech
Goldmax, you change the polarity of transistors BC108 (U8,U5,U6) because I do not work because the Emitter and collector are changed depending on the circuit and is assembled, the difference is in the way he did Sneshko PCB and the other as you assemble the pcb .
After making the modification worked out perfectly in passive mode, but NOT active mode. I change the BC108 transistor U8 new one.
It works in active mode but goes beep TX and RX must be far apart to stop beeping., I think they are at the same frequency
Regards...
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Hi DrTech
Congratulations to your totem, he looks very good.
I built my PCB after Qiaozhi's instruction in his book, and you can only say that the PCB works so very well.
Qiaozhi is an expert in this area and I can only recommend them to you even after his instruction to build.
But as is to see them on your picture, I would say that the distance from the RX coil to the TX coil is too low and therefore you can not find the zero point.
Have you installed the ferrite coil in the box?
Regards