Detektor TRANSET 150

[yhl]

http://www.detektory.wz.cz/download/transet150.pdf

[yhl]

BFO metal detectors 1.5 m depth

[WM6]

BFO metal detectors 1.5 m depth

Congratulations on finished BFO. And thanks for schematic.

1.5m for 60x60 plate (by 30 cm coil) can be maybe possible in air not in soil.

Try with x-tal with lower valoue e.g. half so much.

[detectoman]

yhl: where is the schematic for these bfo 1.5 mts, i am afective to bfos
is these link pdf?

the pdf say archive wrong
regards detectoman

[yhl]

CD4013 how mixing, after mixing what is that? Sound

[WM6]

yhl: where is the schematic for these bfo 1.5 mts, i am afective to bfos
is these link pdf?

the pdf say archive wrong

Link is still in live. Yes it is PDF file copy from polish magazine Praktyczny Elektronik 3/95.

CD4013 how mixing, after mixing what is that? Sound

US1A act as mixer and output is audible sound (or beat frequency).

[Fred]

yhl: where is the schematic for these bfo 1.5 mts, i am afective to bfos

Yes some BFO´s seem to have several km range

[mikebg]

Yes some BFO´s seem to have several km range

Fred, according to author Wiktor Przybysz,the abbreviation BFO means BASE FREQUENCY OSCILLATOR.

[Fred]

Fred, according to author Wiktor Przybysz,the abbreviation BFO means BASE FREQUENCY OSCILLATOR.

How can you beat that ?

[Krzysztof]

Hi Monsieurs.
This is normal BFO with stirring 8 harmonic signal from the coil with the signal generator.
For the purposes of measuring the signal derived from the coil 17kHz (division by 2 and buffer).
The range of active plate 60x60cm Fe is 1.2 m.
When measuring the change in tone was obtained with 1 Hz Sensitivity 1.5 m.
All measurements in the air in the laboratory.
Do not get excited!
Best regards Chris.