Which system Bill? Please be specific
It's a little hard to know whether you're looking at the scanner and doing this manually, or via software (I suspect the latter since the scanner should not have any references to the UBC series, which are European), so let's cover all the bases with what is needed to reband the 796 and see what results....
. If the 796D hasn't been updated with the updated firmware, if the system you want to hear has been rebanded, you may have issues. You can find that here...
BC796DFirmwareUpdate < UnidenMan4 < TWiki
This also has the instructions on how to input the table values. Note that there are very few type 1 systems out there any more - always use the type 2 settings. Be sure to read the *whole* article.
If you're using software (either ARC250 or ProScan) you'll need to see if you're using the most up to date version. If you're using ProScan, you can set up the tables under the Trunk Bank Settings
tab. Unfortunately we don't have a pic for ARC250 in the wiki...
In summary you must have *both* the firmware updated and the most up to date software to reband properly