I don't have any experience with RS scanners. Do you use software to program or program by hand? I use software to program so I never have an issue.
I checked my Uniden 396xt.
Band plan listed as follows:
0:Base Freq: 851.006250/Input Spacing: 6.2500
1:Base Freq: 762.006250/Input Spacing: 6.2500
Hope this helps...