18D Ill assume your running shack equipment here is some data that I guess should help
Looks to me like your answer is at bottom
The statewide mutual aid frequency of 154.8750 MHz. will be used at each tower as a conventional "fallback" frequency, should the primary trunking system fail. Moreover, each city, county and state agency can have redundant backup systems and talkaround frequencies of their own if desired.
VHF MULTI TABLE FOR THE PRO-96
CH LOW 8192
CH HIGH 12287
OFFSET 8192
STEP 2.5
Expect multiple tables.
Base Freq for the multi table is: 150.9925 MHz.
Trunking multi-table
ID: 00
Low channel: 0
High channel: 4095
Channel offset: 0
Base frequency: 851.00625
kHz step: 6.25
ID: 01
Low channel: 4096
High channel: 8191
Channel offset: 4096
Base frequency: 762.00625
kHz step: 6.25
ID: 02
Low channel: 8192
High channel: 12287
Channel offset: 8192
Base frequency: 150.9925
kHz step: 2.5
ID: 03
Low channel: 12288
High channel: 16383
Channel offset: 12288
Base frequency: 146.7775
kHz step: 5.0
ID: 04
Low channel: 16384
High channel: 20479
Channel offset: 16384
Base frequency: 146.775
kHz step: 5.0
ID: 05
Low channel: 20480
High channel: 24575
Channel offset: 20480
Base frequency: 153.5275
kHz step: 5.0
ID: 06
Low channel: 24576
High channel: 28671
Channel offset: 24576
Base frequency: 149.37
kHz step: 5.0
ID: 07
Low channel: 28672
High channel: 32767
Channel offset: 28672
Base frequency: 136.0
kHz step: 12.5