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  3. ExxonMobil Corporation

ExxonMobil Corporation

System Name: ExxonMobil Corporation
Location: Houston, LA MT TX WY
County: 7 Counties
System Type: Project 25 Phase II
System Voice: APCO-25 Common Air Interface Exclusive
System IDs: Sysid: 55F WACN: BEE00
Sysid: C5E WACN: BEE00
Last Updated: April 11, 2026, 17:35 pm UTC   [Changed Site # 013 (Baytown, TX) to 13 (Baytown, TX)]
FCC Callsigns Map Site Locations Report

Sites and Frequencies

Key853.5375Ctrl control channel
SysidRFSSSiteNACNameCountyFrequencies
55F1 (1)013 (D)55DBaytown, TXHarris, TX
8 freqs · 1 control
939.475Ctrl935.400935.425935.4375935.500936.700936.725939.500
55F1 (1)041 (29)—Beaumont, TXJefferson, TX
4 freqs · 2 control
859.7875Ctrl860.1125Ctrl855.3375858.1125
55F1 (1)052 (34)—Baton Rouge, LAEast Baton Rouge, LA
9 freqs · 1 control
854.1125Ctrl854.6875854.7625854.9875856.4125857.4125857.5375858.3125858.3625
55F1 (1)061 (3D)550La Barge CCS Plant, WYLincoln, WY
4 freqs · 2 control
854.025Ctrl854.200Ctrl854.550854.700
55F1 (1)062 (3E)550Quealy Peak, WYLincoln, WY
3 freqs · 2 control
855.050Ctrl855.300Ctrl855.525
55F1 (1)063 (3F)550US-189 Tower, WYLincoln, WY
3 freqs · 2 control
855.700Ctrl855.875Ctrl856.800
55F1 (1)064 (40)550Hogsback Ridge, WYSublette, WY
3 freqs · 2 control
856.350Ctrl857.400Ctrl857.800
55F1 (1)065 (41)550Cretaceous Mountain, WYSublette, WY
3 freqs · 2 control
858.300Ctrl858.800Ctrl859.300
55F1 (1)066 (42)550Deadline Ridge, WYSublette, WY
3 freqs · 2 control
859.800Ctrl860.300Ctrl860.800
55F1 (1)086 (56)556Portland, TXSan Patricio, TX
2 freqs · 1 control
936.2375Ctrl936.175
C5E1 (1)081 (51)C50Billings, MTYellowstone, MT
5 freqs · 4 control
855.8125Ctrl856.4125Ctrl858.4125Ctrl859.3875Ctrl855.5875
Talkgroup Category Report

Talkgroups

Beaumont Refinery
DEC HEX Mode Alpha TagDescriptionTag
20017d1DBeau Emerg-1Emergency-1Business
20027d2DBeau Emerg-2Emergency-2Business
20037d3DBeau Safe-1Safe-1Business
20047d4DBeau Safe-2Safe-2Business
2087827DBeau AromaticsAromatics unitBusiness
2088828DBeau EthyleneEthylene unitBusiness
2089829DBeau ParaxyleneParaxylene unitBusiness
209082aDBeau USC-1USC-1-unitBusiness
209182bDBeau USC-2USC-2-unitBusiness
209382dDBeau Ethyl MaintEthylene MaintenanceBusiness
209482eDBeau Furnace MntFurnace MaintenanceBusiness
Billings Refinery
DEC HEX Mode Alpha TagDescriptionTag
60021772DBillings 6002Refinery OperationsBusiness
60031773DBillings 6003Refinery OperationsBusiness
6013177dDBillings 6013Refinery OperationsBusiness
60171781DBillings 6017Refinery OperationsBusiness
60181782DBillings 6018Refinery OperationsBusiness
La Barge CCS Plant
DEC HEX Mode Alpha TagDescriptionTag
4001fa1TLa Barge 4001La Barge CCS Plant 4001Business
4002fa2TLa Barge 4002La Barge CCS Plant 4002Business
4003fa3TLa Barge 4003La Barge CCS Plant 4003Business
4004fa4TLa Barge 4004La Barge CCS Plant 4004Business
Portland TX
DEC HEX Mode Alpha TagDescriptionTag
70091b61DPortland OpsOperationsBusiness