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[43+] Metal Detector Schematic Circuit Diagram
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![UNIVERSAL VFO-BFO MODULE WITH SI5351](https://i2.wp.com/www.qsl.net/pa2ohh/20vfobfodiagram.jpg)
UNIVERSAL VFO-BFO MODULE WITH SI5351
![Qrp Radio Amateur: BFO](https://1.bp.blogspot.com/-QjL3Lq7mCz0/U2ZaUfoO-wI/AAAAAAAAAIs/ioNGMdD3Hb0/s1600/BFO-Circuit.png)
Qrp Radio Amateur: BFO
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BFO Schematic?
![[43+] Metal Detector Schematic Circuit Diagram](https://i2.wp.com/electronics-diy.com/schematics/649/BFO-1.png)
[43+] Metal Detector Schematic Circuit Diagram
![Electroluminescent Receiver - BFO/Amplifier](https://i2.wp.com/www.qsl.net/wn5y/elrbfopro.gif)
Electroluminescent Receiver - BFO/Amplifier
![FairbanksMorse](https://i2.wp.com/www.geojohn.org/Radios/MyRadios/Fairbanks/BFOcircuit.jpg)
FairbanksMorse