26 Mar 2012 News for NTIA/ITS HF Propagation Models (WINDOWS version) 26 Mar 2012 1. ICEPAC had an undefined variable that could cause the program to think it was in Area Coverage mode when it was supposed to run in Point-to-Point mode. This appeared to be a rare occurance and may be computer/operating system dependent. This has been fixed. VOACAP & REC533 were not affected.