You forgot to note, they're pre-stored messages that go out on each transmission and show on the SCREEN of the far-end receiving radio.
They give you a few so you can change the message easily without having to reprogram it, so you can have multiple "default" messages. Nate WY0X On Jan 19, 2010, at 7:00 PM, Steve Bosshard (NU5D) wrote: > If you use a GPS receiver with your ID800 for position reporting or have a > GPS emulator program to mimic the function of a GPS receiver for use at fixed > locations, C1 contains the message string used for position reporting: > http://www.aprs-is.net/DPRSCalc.aspx > > Many folks do not use reflectors and instead source route their calls. A > message like SET UR=/K5CTX C tells the receiving station how to answer your > call. (unfortunately, many hams have never learned to set UR for call > routing). > > Also some JA stations have a message like RX>CS (maybe order reversed) to let > the receiving station know to capture their call to reply. JA stations do > not have reflectors or dplus and rely on source routing.
