Hi Today I did a test using the automatic correction of SATPC32 at high speed and the result was that my transmission stay almost at the same frequency, as shown in this video. https://youtu.be/lz535MBCWMs SatPC32 is the best ! 73 PY5LF Luciano Fabricio Curitiba-PR-BR GG54jm http://www.qrz.com/db/PY5LF