Signal Tracer - make your own - Part 1

I decide to build my own signal tracer based on the circuit and build plans from Television Servicing magazine (UK), May 1989 issue. The pdf is scanned and available at www.worldradiohistory.com (link below). In Part 1, I show my results of making the RF and audio probes, as well as the rough Veroboard build and initial testing, showing the RF demodulation with an AM test signal. In Part 2, I will build the enclosure from an old arts supply carry case and use signal tracer to debug an old AM transistor radio. https://www.worldradiohistory.com/UK/...