Using Proscan to log and record uids. What is a tell all sign that it is a mobile or portable. Also, when they 10-7 or 10-8 for duty, can I assume portable radio?
Like noted above, it's hard to tell from just the number. You might be able to see a pattern, but that isn't always the case. Our local area had a decent "system" to Unit IDs and you could tell a fire unit from a police unit, etc. But as the system expanded, new units did not follow they system.
I tried for the expansion units, but as Mark said, it is a daunting task.
Calling 10-8 or 10-7 is also agency dependent.