Most of the time when I've seen crystal cases grounded it has been in
crystal filters, where it is supposed to help with feedthru.

...

"Joel Kolstad" wrote in message
...
Anyone have an opinion on whether or not crystal cases (e.g., HC49, HC45,
etc.) ought to be grounded or not? I've done some Googling, and I've
found various cases where people recommend it (albeit without much
explanation as to what they think will change when they do it) and no
cases where it was specifically not recommended.

Thanks,
---Joel