I need a lead on a US Navy DAK-3 manual. I have the DAK-3, but no information on appropriate loop and sense antennas. I'd like to deploy this DF unit as part of the 500kc experimental tests this fall. At the least, can someone identify the NAVSHIPS manual for me? Thanks. Don W5OR WD2XSH/15 www.500kc.com donreaves at gmail.com