On Sat, 19 Feb 2005 21:43:57 -0800, "Andrey"
wrote:

How do I design an automatic antenna tuner with no moving parts?

This is a good question.

How to do it - without relays, motor driven capacitors and inductor cotacts?

1.) Since you did not specify the power level, use varactor diodes and
inductors on a suitable core material and vary the core permeability
with an external magnet field, controlled by a variable DC-current.

2.) Alternatively, get rid of the antenna tuner by using resonant and
matched broadband antennas.

Paul OH3LWR