Dave VanHorn wrote:

> If all you care about is finding the biggest impedance discontinuity,
> then you could do a lumped line oscillator, based on the fact that a
> short at 1/4 wave reflects as an open, and at 3/4 wave as a short.

  OK, I know I/m picky as ever, but you mean "and at 1/2 wave as a
short".
--
  Cheers,
        Paul B.