Ferrite Schematic v1.19

[Funfinder]

Below is a part of that PD circuit which is now open source - here:

http://www.servimg.com/image_preview...658&u=12209946

( http://hobidetektori.own0.com/lrl-f6...-t637.htm#5531 )

It seems working without additional omega coil BFO but is it possibly simplify this stuff ???

Look at this circuit!

There are for shure too many overfluous parts, making the whole thing only complicated, noisy and most worse:
unsensitive! If it's not too much asked someone here can erradicate this stuff and post a "clean" version.

And if ferrite l7 / l8 only have around 100 turns this is far too few for a real good antenna reception!

If this schematic already is 2,5 years old perhaps there exists some update but this is not the problem - we have really to understand what and at what frequency gets received or even transmitted.

There are 2 coils. So the question is:
Does one coil transmits at a certain freq. (what I doubt) or does it only works as signal threshold finder i.e. does it detect if the incoming signal comes from a straight direction??