whites classic/ volksturm opt1- questions

[Kubus]

Greet.
I got from colleague made electronics to detector volksturm. However something does not it act how it should.
It it the only detector was aroused was was and squeals until to separation of battery.
Discrimination nor can put.
Transmitter has 16 volt. Sine on receiver set is about 300mV. The comparators of phaze act.
It if degrees were one should was shift VR1 in order to put on PCB potentiometer?
Should resistors 45 and 46, appointed on my patern on in red miec such value? Because classic had larger power supply.
Whether the preamplifier of receiver set it should not have the value for the patern, because the classic had and from him the coil so use.
And to the end:
Say how this RX matches from oscillator LMC7660?
Schematic
http://zapodaj.net/ba6b1fe71d37.bmp.html
Photo
http://zapodaj.net/20e28c7a5b67.jpg.html

[Austin]

Hello
I, too, I build this detector.
I have a question that is to shift the phase of the transmitter / receiver?
What should the voltage at the receiver 1pin?
What should be the frequency at 1pin receiver? Is it measured in terms of GND layout?