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![455KHz bfo schematic needed with transformers](https://i2.wp.com/obrazki.elektroda.pl/3554993200_1353229104.gif)
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![BFO Metal detectors Circuit Diagram | Wiring circuit](https://1.bp.blogspot.com/-mn5V9vJoEsE/Uh92hAe9KPI/AAAAAAAAErs/4omF1sS2vi8/s400/BFO+Metal+detectors+Circuit+Diagram.gif)
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![Circuit Design Notes](https://i2.wp.com/genebitsystems.com/david/Homebrew20mQrp/images/Bfo.jpg)
![Circuit diagram of BF and its connection with the transformer](https://i2.wp.com/www.researchgate.net/profile/Xiaorong_Xie/publication/260509585/figure/fig2/AS:368097761480709@1464772753846/Circuit-diagram-of-BF-and-its-connection-with-the-transformer.png)
![The AA8V 6x2 Superheterodyne Receiver - BFO Schematic Diagram and](https://i2.wp.com/www.frostburg.edu/personal/latta/ee/6x2rcvr/schematic/bfo/bfomap.jpg)
![BFO_MULTIPLEXER - Basic_Circuit - Circuit Diagram - SeekIC.com](https://i2.wp.com/www.seekic.com/uploadfile/ic-circuit/20097720856759.gif)
![Electroluminescent Receiver - BFO/Amplifier](https://i2.wp.com/www.qsl.net/wn5y/elrbfopro.gif)
![BFO Schematic?](https://i2.wp.com/www.smokypond.com/gallery/download/14134-4/BFO.jpg)
![Figure 5-8. Circuits For Checking bfo, rf Gain Control and Audio Gain](https://i2.wp.com/compassandgyros.tpub.com/TM-11-6625-821-45/TM-11-6625-821-450081im.jpg)
![HF BPF Builders' Notes](https://i2.wp.com/wb5rvz.com/sdr/hf_bpf/images/index.gif)