RE: Dielectric constant table

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com> 

Garden-variety polyethylene (PE) bags have the same dielectric constant
as polypropylene (PP), and PE actually has a lower dissipation factor
than PP (means lower losses/cooler operation).  But with either bag, you
still have the problem of impurities, trapped air bubbles, bulkiness,
messy oil, and typically, inevitable failure.

I posted a comprehensive tabulation of dielectric constants and
dissipation factors to this list a while back, see
http://www.pupman-dot-com/listarchives/2003/March/msg00106.html.

Gary Lau
MA, USA


Original poster: "Nick Andrews" <nicothefabulous-at-hotmail-dot-com>

Has anyone tried polypropylene comic book bags in cap construction?  The

really cheap ones are polyethylene, but the good ones are polypropylene.
Some are mylar, but they are more, and I imagine won't work at HF.

Nick A