This is how I alpha tag my unit for Edacs in the Edmonton Area and its working very well.
Make sure you have programmed the unit properly for the trunked system you wihs to monitor.Press the Menu Key
toggle down to number 3 trunk data then press the E key thats enter.
Select the bank you are currently monitoring then enter
toggle down to number 5 Program ID enter
you should now see location 1-1, Uniden use locations for Id's and Alpha Tags and for example purposes hit Enter again
Select 1: ID , key in your ID Enter
Your next prompt should be Alpha tag hit Enter
Using the VFO Keys input your alpha tag then Enter
the next prompt is record enter
then beep enter
at this time you should be back to item number 1, hit menu to go back to the location menu, use the vfo key to select the next location of 1-2 and continue on until your fingers bleed.
This is what i found is a cheap and simple way to program Id's and Alpha tags
I did notice that if you did program a ID and Alfa tag in location 1-1 or any others, If i was to return to this area again using the about method the field especailly in the Alpha tags were Blank, but the radio still reported what was programmed into that position. I'm not too sure if this is a bug or what.