Hello Robert Sondack,VE2ASL & ALL   KB2LJJ radio mods database offers approximately 7,000 Radio Mod's, This comes close to 12Mb of the typical space. The KB2LJJ Radio Mods Database is the premier online that stores many radios modifications, that you can search on the Radio Mods Database for free (the above info  from KB2LJJ QRZ website)   link is:-   http://kb2ljj.serveftp.com/   KEEP IT IN YOUR FAVORITES   Thanks JOAO F RIBEIRO KB2LJJ  for the great work.FB OM.       Here is a link to Icom 471A http://kb2ljj.serveftp.com/icoms/IC-471A_E%20Instruction%20Manual.pdf       73 de Nader , st2nh www.st2nh.com