If you haven't already done this, you might want to
1) ensure that you have assigned each frequency/talkgroup to a ScanList
2) when in "scan" mode, push the keypad number that corresponds to the assigned ScanList
In other words, in ARC500, in the Object Browser, for each row (either an analog frequency or a digital talkgroup), in the ScanList column, select the desired ScanList number for that row's frequency/talkgroup
Example:
ScanList 1 might contain your local PD analog-frequencies/digital-talkgroups
ScanList 2 might contain your local FD analog-frequencies/digital-talkgroups
ScanList 3 might contain your local State Police
ScanList 4 might contain your RailRoad items
ScanList 5 might contain your Ham items
etc
Then save the file, upload it to the scanner.
And then when the scanner is in "scan" mode, push the "1", "2", "3", "4", and "5" buttons, to enable those scanlists.
If you don't want to listen to a particular one, then push that undesired number again to toggle the scanlist off.
When active/enabled, the scanlist number will display on the screen. A period "." displays in-place of the scanlist number when it is deactivated/off. To enable scanlists 11-20, use key-sequence "func" and then the scanlist number. ScanLists "21", and "22" are the "Favorites" and the "SkyWarn" scanlists.
Hope this helps,