UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Looking to build RF detector probe for low frequency

IsquaredR · 12th Feb 2019, 4:54 am

Thanks G0HZU for your input. Perhaps it should be mentioned here that the metal box is connected to no part of the circuit. The probe, earth ground, "B- side" of the circuit and output to an oscilloscope have all been wired to separately from the metal box. Do you have trepidation about doing it that way? GMB my earth ground is about 8-inches long so I am hoping to obviate any circulatory current around the box.
This evening I worked just on the ground clip portion and have not had a chance to do any real testing which hopefully I will tomorrow. I am anxious to see how it does with an actual IF waveform.

12th Feb 2019, 4:54 am	#25
IsquaredR Tetrode Join Date: Apr 2017 Location: Minocqua, Wisconsin, USA. Posts: 86	Re: Looking to build RF detector probe for low frequency Thanks G0HZU for your input. Perhaps it should be mentioned here that the metal box is connected to no part of the circuit. The probe, earth ground, "B- side" of the circuit and output to an oscilloscope have all been wired to separately from the metal box. Do you have trepidation about doing it that way? GMB my earth ground is about 8-inches long so I am hoping to obviate any circulatory current around the box. This evening I worked just on the ground clip portion and have not had a chance to do any real testing which hopefully I will tomorrow. I am anxious to see how it does with an actual IF waveform.