I recentley bought a radio shack pro-106 and programmed it by following the shortcut instruction page in the wiki section. Its working pretty good now except for one concern. The only question I have is I got through all the steps on the page, entered all the frequencies in the talk group I wanted, but when I got to steps 21 through 26, I was kind of clueless. Since the paragraph above steps 21 through 26 said the low chan is 380 and last chan is 759, I entered 380 for lo chan, 759 for high chan, and the 380 again for offset. For base and step I had no idea what to put so I just left them blank and saved it. Like I said before, when I scanned its doing pretty good now, but I don't know anything about this stuff and figure it could be doing a lot better for all I know. I read the wiki page on determining base, offset, and step and cannot for the life of me figure out what its talking about. Can anyone tell me if I made a critical error in setting up this talk group by not getting the base, offset, and step correct? And also if I did and need to start over, can someone tell me what I need to put in for the base, offset, and step? Thank you so much to anyone who can help me with this.