Yes, I looked at getting one of those myself, but as far as I'm concerned they have a few things wrong with them,
1) They are purely RF only.
2) I require the probe to work with audio circuits mainly.
3) They require a contact to be made.
4) They still require a suitable probe shell.
5) They need an oscilloscope.
6) I like the idea of the probe being connected to a speaker as in the video, means I don't have to look away to see the results.
I would be interested to discover how you get on with the Ebay one.
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