PRIMARY ID
Also known as the Radio ID. Each radio within a system will have a unique 4 digit ID number associated with it referred
to as the Primary ID, and is used to identify the Radio at the base station. This number
is transmitted upon a change in state of the PTT (pressing and releasing). The Primary ID number range is from 0001 to DEEE (hexadecimal)
VARIABLE ID
Also known as a Group ID, the Variable Unit ID is used to group radios
so that several radios will decode the same Selective Call or Call Alert. The Variable Unit ID consists of a three digit hex number ranging from 000 to EEE
As far as Secondary ID, I would put as the same as the Primary ID. Just my suggestion. If it is supposed to be different then whomever handles your radio system would tell you what it needs to be, or will program it themselves. I hope I have answered your question...
••David