> I was surprised to see this from Alpha, whom I would have expected to know > better. The identical design (less automated functions) can seen in recent issues of the ARRL Antenna Book For example, see 20th Ed., pp. 25/15 - 25/19 and titled "High-Power ARRL Antenna Tuner for Balanced or Unbalanced Lines." Even output C is the same at 800 pF max. Paul, W9AC