[R-390] Filters

[quartz55]

OK, I have 2 - 2uF 650V MLR205K630 on order.  I also found the RF gain had a glitch at the high end.  It goes from some small resistance to 0 and produces a click.  Taking apart the pot, it looks like it's just made like that.  I found a replacement I had and it a bit better, but not perfect.  I guess I'll have to wait until I get the new caps including all the Mouser ones installed to see if it makes any difference.  It's acting pretty much the same all the time.  Starting at 100uV the gain goes up to maybe 30uV then back to 100 and sometimes even more, but after a while it settles down to 100uV.  The other module seems more sensitive, so I'm sort of assuming the variable gain one is loosing gain for some reason.

N3DT