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Motorola system ID's are usually in the format of something like "7Axx" for example
But is it possible for them to be in any other format such as only 3 digits and no letters?

3 digits or characters would be a P25 system. Like the new WSP 700 system is now 9CC. 4 digits are the older analog/digital systems.

So that would be only a fully P25 system? Because i understand that some Motorola analog/type 2 or whatever systems can have P25 capable talkgroups on them

Whats happening is i am receiving a weak Mot control channel and when i sit on the control channel to try and get a system ID it just reads "ID: xxx " Whereas usually when a system ID is decoded it will show "SID:xxxx" so i am also thinking this could be some type of error due to the weak signal

Exactly, here in MA we have One Network, with the ole Type II running as 0D14 and the P25 running as D14
0D14 is analog with a few P25 TG's which are allowed on only a handfull of Talk Paths

The three digit hex System ID's are usually assigned to true P25 systems using a P25 9600 baud control channel.

The four digit System ID's are assigned to Motorola systems. They may have some digital talk groups but are not broadcasting a true P-25 control channel.

Harris system P-25 ID's are three digits as well, but are often not unique. They seem to use a default system ID of 00A a lot, but with different WACN.

-CP

_________________
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Chris Parris
Federal Wavelengths columnist
The Spectrum Monitor Magazine
chrisparris@thefedfiles.com

Makes sense - must have been some type of error due to the weak signal
Thanks