[Elecraft] Feed through capacitors

[Matt Osborn]

In my attempt to complete the Poor man's Spectrum Analyzer, I found
that I need some feed through capacitors to shunt RF off the DC power
supply lines.

I've been unable to find a source.  That neither Mouser nor DigiKey
seems to offer them has me wondering if I'm looking in the right place
or for the right things.

I wanted the screw in types that fit in a hole in the Hammond box used
to hold the RF board.  Mouser does sell SMD types, but I don't think
those are particularly useful for this application.

Does anyone know where I might find a supplier?

PS. It seems as though the feed from this reflector isn't working.
I've seen less than 5 posts since Friday evening.  I was able to post
a test message that made to the reflector and back, so I'm still
subscribed, etc.