[Elecraft] Design reasons for X7-X11 case soldering

[Tom, W6WW]

So should I change the top-soldered crystals to bottom side grounding?

73,
Tom, W6WW
K2 #3453


> Actually, the desired result of grounding the crystal cans with a direct
> lead is a low inductance ground that sets up a shield to crystal signal
> blowby, thus improving the performance of the filter.  Stray coupling of
the
> signal you are trying to filter might be greater if the cans were all at a
> higher impedance than direct grounding them creates.
> You are converting the cans from acting as plates of a capacitor to acting
> as a shield.
>
> Often crystals have a steel type can, and thus you also are getting the
> magnetic shield tied well to ground.
> -Stuart K5KVH
>