This circuit was obtained from an old Electronic Design. The components are from the period but can be replaced with modern equivalents.
This circuit, which can be used on percussion instruments, has the oscillation point adjustment made in...
Equivalent transistors, like the BC548 and BC558 pair can be used in this circuit that we find in an...
Any general-purpose germanium or silicon PNP transistor can be used on this receiver. The handset...