You can download a copy of the user's manual
here if you need it. It doesn't look like you can set your own scan range, but you can have the scanner search by pre-defined service. Here's what the manual says about searching:
service search
You can search for weather, ham, marine, aircraft, or
police (fire/emergency) transmissions without
knowing the specific frequencies used in your area.
The scanner is preprogrammed with all the
frequencies allocated to these services. To use this
feature, press FUNC + SVC. SRCH appears and the
scanner searches starting with the weather service
bank. To select a different service bank, repeatedly
press FUNC + SVC. Service mode appears on the
display.
When the scanner stops on a transmission, quickly
press HOLD to stop searching and listen to the
transmission. HOLD appears. In this mode, you can
press FUNC + ^ or FUNC + v to step through
the frequencies.
To release the hold and continue searching, press
HOLD. Or, if you did not press HOLD, simply press
FUNC + ^ or FUNC + v to continue searching.
It goes on to explain how to store frequencies as you find them while searching.
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