Uploaded October 2019 | Updated September 2026, 2 weeks ago

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tvrepairinformation.weebly.com In this video I demonstrate how you can build a simple Radio Frequency Detector using only a detector diode and an LED. This simple circuit was sensitive enough to operate from my cell phone, my WIFI router, my walkie talkies, my microwave, my smart meter, my google assistant, and any other devices with enough power that transmit in the frequency range of my resonant antennas.
Here is a warning about using some aftermarket diodes that may not work in this project.
Unfortunately many sellers on ebay and amazon have flooded the markets with fake 1SS86 Diodes that don't work on the higher frequencies, and they are not the 1SS86 Diodes made by Hitachi which has an H on them. . If you can't find the 1SS86 diodes made by Hitachi you can also use a 1N5711 which is not as sensitive, but they do work. Here is an additional video on this topic at the link below.
youtube.com/watch?v=ghv1JyjWB8M

Here is a PDF on the original 1SS86 Diode made by Hitachi.
https://www.pdf.support/pdfviewer?url=https%3A%2F%2Fpdf.support%2F28abef9c%2Fhitachi.co.jp%2F1SS86.pdf