While the Motorola XPR-4550 has some limitations for amateur usage it also has some capabilities many ham focused radios do not have.
- Very well made physically
- Great audio
- Integral GPS will work with APRS through DMR
- Roaming across DMR channel/talkgroups (this is very neat)
- Can direct access zone change via P1 button. Not as useful as Zone Up and Zone Down
- This is the radio most of the early ham DMR's was copying. You can see it in the menus, etc. Especially the CS-800 and TYT menus.
- Can be remote mounted using a separation kit. I'm seeing these on ebay at ~$100
- Must use Motorola CPS to program
- Limited to 1000 contacts
- Zone order is alphabetical, which can be addressed by using leading characters in the CPS
- Display showing the Contact name/ID is smaller and a bit fainter than the Channel Name line (this is addressed on the more expensive 5500)