RDO ~ RADIO Pete, wa2cwa On Sat, 27 Sep 2014 15:42:26 -0300 Wilson Curtis <wilson_curtis at msn.com> writes: >> 3) The system used by the US Navy, the three letter designation as > in RDO, has no rhyme nor reason as far as I could see. > Hope some find this useful. > Reg Curtis - VE9RWC/KB1WCP