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I cannot find any documentation about the USAGE_hex column for the ETrunker group files. There is documentation available for Motorola systems, but not EDACS.
From what I have observed, I am guessing this is what the numbers in the column signify:
0-Analog
1-Analog with Emergency Alert
4-Digital Unencrypted
5-Digital Encrypted
Can anyone confirm or deny if '4' truly means unencrypted and '5' truly means encrypted digital?