"Tom Sevart" wrote in news:c09us1$14cdhd$1@ID-
52518.news.uni-berlin.de:

Adjustable caps? They're everywhere.

You can get them out of old transistor radios.


Yeah, little cruddy ones. Big news - the metal frame variables are easily
had and for cheap. Any reports of their demise is highly exagerrated. Try
Antique Electronic Supply or Fair Radio, for starters.