PTC-II pro is the most complete HF modem at the moment! High-speed, with the maximum set of functions and the possibility of upgrading to PACTOR-III. Features: forwarding e-mail messages, transferring files, organizing data transmission lines in real time. The PTC-II pro modem is a multi-mode data transfer interface between your personal computer and radio equipment. The PACTOR-II mode is now the industry standard and the most robust digital data transmission mode for HF radio communications.