On May 20, 2010, at 12:10 AM, J. Forster wrote: > Roy, > > Nope. The ARN-1 is the Navy version of the APN-1 Radio Altimeter. Ok, thanks for the reply. Roy Roy Morgan k1lky at earthlink.net 529 Cobb St. Groton NY, 13073 Home: 607-898-3607 Cell: 301-928-7794