[R-390] Filters

[quartz55]

I was just looking at the copper cylinder and it appeares to be molded into the last disk, so I took my vernier calipers, measured the bottom of the copper cylinder and it turns out the copper cylinder is embeded into the last resonater disk.  Hmm.  Not looking good to unsolder it.  It almost looks silver soldered.

Does anyone have a bad 4K filter they would be willing to sacrifice to the good of all?  Bad coils are fine.  I'm thinking about a better way to pull the end caps off too.

I notice there is a resistor in the bottom end, about 57K across the coils.  Didn't notice it because of the goop before.