Software Program Rev Description Download Attenuator Calculator 1.20 Resistive attenuator calculator. KML Generator 2.05 GPS log file analyzer and KML generator. PAD-2-HTML 1.05 Generate HTML from PAD files. Serial Loopback Test 1.10 Serial port loopback test. We proudly distribute our software through the following websites.               A majority of our software is made available for free so please consider making a donation to support our efforts. Thanks!