Please read the description/textbox first. It is again about the dipmeter or radio test oscillator working from 20 MC - 110 MC.
First video is here: https://youtu.be/Reu72iLq034
This is only a VLOG, showing the development of the project started 18 july 2022.
It is also a “video into a video”, where I comment on a video about the same subject (the dipmeter) that I made this afternoon (21 july 2022).
Most important things to tell:
• Use a good quality tuning capacitor going from say 2 pF to 50 pF in this dipper circuit, more info in the video, types are showed.
• The way that I used a capacitor trimmer to make it work is, in a certain way, the ultimate “poor man” solution. And I like that. It is simple and stubborn. Though with investing a few Euro's/Dollars more for a proper tuning capacitor (2-50 pF) the test results when using the dipper will be looking like to be more precise, at least when you know what is happening in the circuit and can interpret the measurement results.
But & anyway: when you want to use a x cents capacitor/trimmer of 2 pF-50 pF or 2-30 PF: use a CERAMIC one.
Because when you solder a wire (kind of pointer) to the top of a ceramic 2-50 pF trimmer it will not be immediately defective, because the ceramic material can withstand the heat of the soldering iron.
That is/was the most important thing to tell in this VLOG.
My You Tube channel trailer is here: https://youtu.be/xbgQ8T3oqh4 When you search, search always “NEWEST FIRST” to get the right overview. You can also search via the “looking glass” on my Channel trailer via keywords like ”audio”, “radio”, “amplifier”, “filter”, “Shortwave”, “transistor”, “FET”, “oscillator”, “generator”, “switch”, “schmitt trigger” etc; so the electronic subject you are interested in.
My books about electronics & analog radio technology are available via the website of "LULU”, search for author “Ko Tilman” there.
https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=Ko+Tilman
I keep all my YT videos constant actual, so the original video’s with the most recent information are always on YouTube. Search there, and avoid my circuits that are republished, re-arranged, re-edited on other websites, giving not probable re-wiring, etc. Some persons try to find gold via my circuits. I take distance from all these fake claims. I cannot help that these things happen. Upload 22 July 2022.