Hi,
I got a nickel rod, and I would like to try to make it into some sort of mechanical filter (just for fun). Put a coil on each side, put a signal on one side, read it out the other, see what the frequency response is.
Would like to use my nanoVNA to do this.
What amplifiers on either side should I use? Any pointers to how to go about doing this? (I'm finding various articles from magazine reprints from the 50s, but nothing that has been super helpful yet.)
Cheers!
-Ben