ARC500 is the most popular programming software for the Whistler WS1040/WS1065/GRE PSR-500/PSR-600 and Radioshack PRO-106/PRO-197/PRO-651/PRO-652 models scanner series and is also the most user-friendly software available for your scanner developed by the scanner software world market leader! ARC500PRO adds powerful data logging and digital audio recording!