Some number their channels differently, but all FRS/GMRS radios operate in the same mode and will have at least some frequencies in common. Check the channel/frequency lists for both radios and you'll be able to talk to each other.
This might be it:
-Tha Mp3 Doctor
The manual says:
Channels Available - 22 Channels
Output ERP Power (TX) - 0.5W (FCC Maximum)
BatteryLife - 30 Hours (typical)
Range - About 2 Miles
I think this is the document you're looking for:
http://safemanuals.com/ let me know if i helped rate me please.
My name is Tony DeMil. I have some other 2276s that work well if you're interested!
Make me an offer. Or, do you have a manual? I also have other models. I came across a bunch in a lost and found sale.