Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "kilocycles" <kilocycles@...> wrote:
>
> John,
> Thanks for the info in your post.  It's now in my "Design" folder on
> my hard drive.


You are welcome.
 
> Your explanation provides a good example of why we don't use film
> capacitors at RF, only at audio frequencies.
(snip)

Actually, film capcitors are often used in RF design.  But details of
construction methods and dielectric properties count for a lot.  Every
commercial capacitor is a compromise between lots of competing
factors.  None is perfect and free and minimal size.  Best design
practice involves getting to know the relative costs and imperfections
of each kind of dielectric and construction method so you can select
the best overall compromise for any given application.