You can restrict the range of the receiver. Here's an excerpt from the
manual.


Programable VFO 
If you always check frequencies within a certain range, 
you can set upper and lower limits for frequencies that are 
selectable. For example, if you select 144 MHz for the 
lower limit and 145 MHz for the upper limit, the tunable 
range will be from 144.000 MHz to 145.995 MHz. 

1 Select your desired VFO frequency. 
2 Enter Menu mode and access Menu 100. 
(Example: E type) 
3 Press the Tuning control. 
* The lower frequency limit blinks. 
4 Rotate the Tuning control to select your desired lower 
frequency limit, then press the Tuning control to set 
the selected value. 
* The upper frequency limit blinks. 
5 Rotate the Tuning control to select your desired upper 
frequency limit, then press the Tuning control to set 
the selected value. 
6 Press [ESC] to exit Menu mode. 
Note: You cannot program the 100 kHz and subsequent digits. The 
exact 100 kHz and subsequent digits of the upper limit depend on the 
frequency step size you are using.