If you are talking about stuff like service search or spectrum sweeper, then you're going to actually need to go in and program a new object for what you're interested. Basically make a NEW -> SRCH -> LMIT/SRVC/SWPR
and then refer below. Otherwise, I am not aware of any preset frequencies in PSR-310.
For an existing object, you should select the object and EDIT
. Use the down arrow until you get to LED Mode
and select if you want it to Flash
or be Solid
. After that, you need to select LED Color
and choose 1-7
is off. Be sure to Save
it and that should be it. Repeat as desired.
If that does not work, check if Alert Mode
is set to Both
. If it is not set to either, it will not work.
If someone hasn't already provided the Easier to Read
manual for the PSR-310, the link is below and is certainly a good read to learn about the scanner:
Easier to Read PSR310/410 Scanner Manual