Here's some additional information to get you started:
The radio has these frequency coverages:
1. 30-50 mHz FM (not a lot of action; usually quiet)
2. 118-136 mHz aircraft band, AM, not FM (all commercial airlines and airports)
3. 136-174 mHz, FM (huge amounts of activity; ham band is 144-148 mHz)
4. 420-512 mHz, FM (huge amounts of activity; ham band is 420-450 mHz mostly 440-450 mHz)
As opposed to today's desktop scanners, and most portable scanners, the 210XLT does NOT have
PL (CTCSS) or DPL (DCS) capability, nor does it have the ability to have the display show an alpha
display for the agency; it just shows numbers, period. As noted above, it's also a strictly a wideband
receiver, and today much of the radio traffic is narrowband.
The best source of information is probably the wiki section of this Board where you will find hundreds of relevant topics about scanning. You can download a copy of the 210 manual here:
BTW, I've had my 210XLT for probably twenty years and it's still in use down in the country where many
of the smaller fire and police agencies still use analog FM radio systems.