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Circuit Bench

  • Signal follower CK722 (CB23693E)

      Using the well-known CK722 and also the CK721, this signal follower or tracer was found in Radio...

  • Two Transistors MW Radio (CB12909E)

      This receiver uses germanium PNP transistors that can be used from old disused devices. The...

  • Multi-band regenerative receiver (CB22278E)

      This 60's receiver has a range determined by plugging coils into a socket. The circuit uses...

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