"Rightrik" a écrit dans le message de news:
...
Hello, i'd like to build a loop antenna , so i need a variable capacitor
(butterfly, split-stator or vacuum) with a resulting capacity of 500 pF
and
about 5 Kv insulation...
The values are not critical, and i'll have to motorize this capacitor...

Anyone have something not too much expensive to sell?

Look the http://www.xs4all.nl/~barendh/Indexeng.htm