In article ,
"Michael A. Terrell" wrote:

Telamon wrote:

No I have not but if you have a link I would like to see one.

Other things I seen done with tubes externally is with those little
acorn type tubes. I have seen them used in a way they pass signals
to one another by pointing their tips together. I can't tell you
any more than that as I had no schematic of the device, which was
some kind of military remote control box that went into aircraft.

-- Telamon Ventura, California

http://www.duracap.com/inductuners/uhf600series.htm It is a compact
version of a multi gang roller inductor. There are a number of models
available, and they were used as variable TV tuners years ago. Too
bad they don't make one that is suitable for HF front end. It might
be possible to adapt the lowest VHF model to a single band, but its
still an interesting device.

http://www.google.com/search?num=100...window=1&q=Mal
lory+ind uctuner&spell=1 has a few more pages related to the
subject.

Thanks for the links.

--
Telamon
Ventura, California