I spent a bit of time digging around for better information on my Blackberry's performance, only to find precious little assistance in the native Blackberry OS. After a bit of digging, I found a VERY nice free app - Signalloc v5.
It's all there - signal strength, network services avaialble, current ID and channel, plus a full screen of phone network details, another for GPS internals, and yet others for WLAN and device details. You can (with Google Maps) plot your cell sites on a map, and you can also export your "saved sites" to either CSV or Google Earth.
This is a GREAT app for the tech junkie who wants to see 'behind the scenes' of their Blackberry...grab an OTA install from the link below.