| CODE | - RADIO SERVICE CODE |
| AA | AVIATION AUXILIARY GROUP |
| AC | CIVIL AIR PATROL |
| AD | AVIATION DEVELOPMENTAL |
| AF | AERONAUTICAL AND FIXED GROUP |
| AG | AIRCRAFT GROUP |
| AR | AVIATION RADIONAVIGATION LAND |
| AX | AERONAUTICAL MOBILE SATELLITE |
| BA | AUXILIARY BROADCAST |
| BF | FM BROADCAST |
| BI | INTERNATIONAL BROADCAST |
| BS | STANDARD BROADCAST |
| BT | TV BROADCAST |
| CA | INDIVIDUAL MOBILE RADIO |
| CC | INTERNATIONAL FIXED PUBLIC CONTROL |
| CD | DOMESTIC PUBLIC LAND MOBILE |
| CE | DIGITAL ELECTRONIC MESSAGE SERVICE |
| CF | POINT TO POINT MICROWAVE |
| CG | DOMESTIC PUBLIC AIR-GROUND |
| CI | INTERNATIONAL FIXED PUBLIC |
| CL | CELLULAR TELECOMMUNICATIONS |
| CM | MULTI POINT DISTRIBUTION |
| CO | OFFSHORE RADIOTELEPHONE (ORTS) |
| CP | INTERNATIONAL FIXED PUBLIC PRESS |
| CR | RURAL RADIO |
| CS | INTERNATIONAL FIXED SATELLITE |
| CT | LOCAL TELEVISION TRANSMISSION |
| CX | DOMESTIC FIXED SATELLITE |
| EX | EXPERIMENTAL EXPORT |
| GA | CONVENTIONAL PUB SAF & SPEC EMERGENCY |
| GB | CONVENTIONAL BUSINESS GROUP |
| GC | MOTOR CARRIER GROUP |
| GF | CONV PUB SAF & SPEC EMER - NATIONAL PLAN |
| GI | CONVENTIONAL OTHER INDUST & LAND TRAN |
| GO | OTHER SERVICES GROUP |
| GP | CONVENTIONAL PUB SAF & SPEC EMER |
| GR | CONVENTIOANL SMR |
| GS | 900 MEGAHERTZ PAGING |
| GU | CONVENTIONAL BUSINESS |
| GX | MIXED SERVICES GROUP |
| IB | BUSINESS |
| IF | FOREST PRODUCTS |
| IM | MOTION PICTURE |
| IP | PETROLEUM |
| IS | SPECIAL INDUSTRIAL |
| IT | TELEPHONE MAINTENANCE |
| IV | FILM AND VIDEO PRODUCTION |
| IW | POWER |
| IX | MANUFACTURES |
| IY | RELAY PRESS |
| LA | AUTOMOBILE EMERGENCY |
| LI | INTERURBAN PASSENGER |
| LJ | INTERURBAN PROPERTY |
| LP | LOW POWER |
| LR | RAILROAD |
| LU | URBAN PASSENGER |
| LV | URBAN PROPERTY |
| LX | TAXICAB |
| MA | MARINE AUXILIARY GROUP |
| MC | COASTAL GROUP |
| MK | ALASKA GROUP |
| MR | MARINE |
| MS | SHIP GROUP |
| MX | MARITIME MOBILE SATELLITE |
| NC | NATIONWIDE COMMERCIAL 5 CHANNEL |
| NL | NATIONWIDE NON-COMMERCIAL 10 CHANNEL |
| NS | NATIONWIDE NON-COMMERCIAL 5 CHANNEL |
| PF | FIRE |
| PH | HIGHWAY MAINTENANCE |
| PL | LOCAL GOVERNMENT |
| PM | EMERGENCY MEDICAL |
| PO | FORESTRY CONSERVATION |
| PP | POLICE |
| PS | SPECIAL EMERGENCY |
| QD | NON NATIONWIDE DATA |
| QM | NON NATIONWIDE PUBLIC SAFETY/ MUTUAL AID |
| QO | NON NATIONWIDE OTHER |
| QT | NON NATIONWIDE 5 CHANNEL TRUNKED |
| RA | RADIO ASTRONOMY |
| RP | REMOTE PICKUP |
| RS | RADIOLOCATION |
| SF | STANDARD FREQUENCY |
| SM | INDUSTRIAL SCIENTIFIC AND MEDICAL |
| TR | CABLE TELEVISION RELAY |
| XC | EXPERIMENTAL CONTRACT (DEV) |
| XD | EXPERIMENTAL DEVELOPMENTAL |
| XR | EXPERIMENTAL RESEARCH |
| YA | TRUNKED PUB SAF & SPEC EMERGENCY |
| YB | BUSINESS GROUP |
| YF | TRNK PUB SAF & SPEC EMER - NATIONAL PLAN |
| YI | TRUNKED OTHER INDUSTRIAL & LAND TRANSPOR |
| YO | OTHER SERVICES GROUP |
| YP | TRUNKED PUB SAFETY & SPEC EMERGENCY |
| YS | TRUNKED SMR |
| YU | TRUNKED BUSINESS |
| YX | TRUNKED SMR |
| ZA | GENERAL MOBILE |
| ZA | GENERAL MODILE RADIO |
| ZC | RADIO CONTROL |
| ZD | CITIZENS BAND |
| ZV | INTERACTIVE VIDEO & DATA |
Frequency Callsign Company Name RS City State County
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