Hi.
Brasilpb wrote it!!.
At this version there is only a rf sniffer at 120Mhz.
Bfo at 130Khz don't interest us!!
If you make changes at oscillator then maybe to catch the phenomenon with bfo circuit.
Regards
Hi !!
what changes is needed to the bfo oscillator to catch the phenomenon?
Hi Kosta!!.
You must modify the level of bfo signal.
I NEVER tried it, i speak theoretically!!!
Thanks GEO!
I will try something this winter, theoretically in the first stage I will make a bfo with crystal cd 4023, in the second stage I will add a signal amplifier and in the last stage I will make the audio with a lm 380 that detects both frequency and voltage dc in the sound signals. and of course I will add a stimulating coil.
Hello friends,
What chip is this with a red circle ??
Does anyone in the forum know how to identify it ??
Or give some opinion or suggestion based on the scheme of this circuit.
Thanks to all who can help me.
.
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