Gerrit J. Veneberg
Licenced since 1974 and mainly active on HF. Equipment Yeasu FTDX5000MP and Kenwood TS850SAT. Antenna SteppIR 7Mc – 50Mc. Homebrew Amp.(EST 1993) with 3x 4CX250. Nowadays used bij some young Hams who call the Amp. Ome Joop. Done several 160M experiments with 5/8 vertical (almost 100m wire) on a balloon and kite during CQWW 160M.
Member of PI4A contest group and build several antennas and filters for the group. PI4A was PI4ZI till August 2013.