| Frequency | Company name | RS | City |
|---|
| 42.3400 | CHP (BLUE) | PP | ARCATA |
| 42.5400 | CHP (GREEN) | PP | ARCATA |
| 109.5000 | ARCATA (ILS/DME) | AF | ARCATA |
| 110.2000 | ARCATA (ABVOR/DME) | AF | ARCATA |
| 122.2000 | ARCATA FLIGHT SERVICE | AF | ARCATA |
| 122.6000 | ARCATA FLIGHT SERVICE | AF | ARCATA |
| 122.9000 | CIVIL AIR PATROL | AF | ARCATA |
| 123.1000 | CIVIL AIR PATROL | AF | ARCATA |
| 123.6500 | ARCATA AIRPORT | AF | ARCATA |
| 128.9250 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 129.8500 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 130.2500 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 131.4250 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 131.5500 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 132.0000 | AERONAUTICAL RADIO, INC. | AF | ARCATA |
| 151.2500 | CALIFORNIA FISH & GAME | PO | ARCATA |
| 153.7400 | HUMBOLDT STATE COLLEGE | PL | ARCATA |
| 153.7850 | HUMBOLDT TRANSIT AUTHORITY | PL | ARCATA |
| 153.8450 | ARCATA TRANSIT AUTHORITY | PL | ARCATA |
| 154.1300 | ARCATA FIRE PROTECTION DIST. | PF | ARCATA |
| 154.1300 | ARCATA FIRE PROTECTION DIST. | PF | ARCATA |
| 154.2800 | ARCATA FIRE PROTECTION (AID) | PF | ARCATA |
| 154.2800 | ARCATA FIRE PROTECTION (AID) | PF | ARCATA |
| 154.6500 | ARCATA POLICE DEPARTMENT | PP | ARCATA |
| 154.7400 | ARCATA POLICE DEPARTMENT | PP | ARCATA |
| 154.9200 | HUMBOLDT STATE UNIVERSITY PD | PP | ARCATA |
| 155.0700 | ARCATA POLICE DEPARTMENT | PP | ARCATA |
| 155.1750 | ARCATA MAD RIVER AMBULANCE | PS | ARCATA |
| 155.1750 | ARCATA MAD RIVER AMBULANCE | PS | ARCATA |
| 155.4300 | ARCATA POLICE DEPARTMENT | PP | ARCATA |
| 155.7450 | ARCATA, CITY OF | PL | ARCATA |
| 155.9550 | ARCATA, CITY OF | PL | ARCATA |
| 158.1000 | JAMES N. HOFF | CD | ARCATA |
| 158.7900 | ARCATA POLICE DEPARTMENT | PP | ARCATA |
| 158.8350 | HUMBOLDT COUNTY, CALIFORNIA | PL | ARCATA |
| 158.9400 | ARCATA FIRE PROTECTION DIST. | PF | ARCATA |
| 169.4750 | CALIFORNIA NATURAL RESOURCES | PO | ARCATA |
| 450.2500 | STATE OF CALIFORNIA | NM | ARCATA |
| 455.2500 | STATE OF CALIFORNIA | NM | ARCATA |
| 460.2500 | CALIFORNIA STATE POLICE | PP | ARCATA |