[R-390] Filters

[quartz55]

I'm thinking about how to attach the nickel wire.  There may be a way.  BTW it certainly is magnetic.  I'm about done for today though.

I'm thinking of coming up with a better way to pull off the end caps now that I know how they work.  That would certainly help, not to be so destructive in removing things.  Pulling on the attachment points is not good, I had a couple of them move.

I've still got a 2K filter that has high loss and lower resistance from the coil to ground, so it may just have bad dukey inside to clean out.