Scanner Audio Streams and
Frequency Database for
Humboldt, Mendocino, and Trinity Counties
on California's North Coast.
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NEW and
IMPROVED SCANNER AUDIO STREAMS! | |
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We also listen to this scanner, but if it stops working for more than a half day or so please let us know at sunnyfortuna@gmail.com. Our ISP (sonic.net in Santa Rosa) is rock solid but the local network's automatic firewall updates and router configurations occasionally conspire against us. Technical information for this radio and its broadcasting server is here. The URI for this scanner is being listed on some scanner location web sites. |
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The scanner listens to all the frequencies below and their related TAC channels. There are many more additional active frequencies on the North Coast. An excellent resource for finding local scanner frequencies is http://harrymarnell.net/. If you hear telemetry bursts you are listening to the International Space Station. These digipeater mode signals are in the 2 meter amateur radio band (145.800 and 145.8250 MHz) and are received only for the few minutes while the Station is within range. This listing may be sorted by clicking on the headings. |
| Name | Type | Frequency | Base of operations |
|---|---|---|---|
| Arcata Fire Department | fire, medical | 154.130 | Arcata and McKinleyville |
| Arcata Police Department | law enforcement | 155.430 | Arcata |
| CALCORD | law enforcement | 156.075 | State wide |
| CALTRANS District 1 | public works | 47.200 | Eureka District |
| CLEMARS | law enforcement | 154.920 | State wide |
| California Department of Forestry | fire, emergency dispatch, medical | 151.250 | Humboldt County |
| California Department of Forestry | fire, emergency dispatch, medical | 151.385 | Mendocino County |
| California Fish & Game | law enforcement | 151.415 | North Coast |
| California Highway Patrol | law enforcement | 42.180 through 42.540 |
Humboldt County Trinity County |
| California Highway Patrol mobile extenders | law enforcement | 154.905 | Humboldt County |
| Carlotta Fire Department | fire, medical | 154.010 | Carlotta |
| Eureka Police Department | law enforcement | 154.325 | Eureka |
| Fairhaven Fire Department | fire, medical | 154.400 | Samoa Peninsula |
| Ferndale Fire Department | fire, medical | 154.175 | Ferndale |
| Ferndale Police Department (Fortuna dispatch) | law enforcement | 155.250 | Ferndale |
| Fortuna Fire Department | fire, medical | 154.235 | Fortuna, Hydesville |
| Fortuna Police Department | law enforcement | 155.250 | Fortuna |
| Humboldt County Fire Dispatch | fire, medical | 154.070 | Humboldt County |
| Humboldt County MCI Channel | emergency services | 460.350 | Humboldt County |
| Humboldt County Public Works | public works | 153.905 | Humboldt County |
| Humboldt County Sheriff | law enforcement | 155.070 | Humboldt County |
| Humboldt County Sheriff Main Channel | law enforcement | 154.740 | Humboldt County |
| International Space Station, Ham Radio | telemetry bursts | 145.800 | When overhead |
| Loleta Fire Department | fire, medical | 154.010 | Loleta |
| Marine Channel 16, distress and hailing | communication | 156.800 | Marine |
| Marine Channel 22a | communication | 157.100 | Marine |
| Marine Channel 83 | communication | 157.175 | Marine |
| MedNet - Fortuna Dispatch | medical | 462.950 | Fortuna |
| MedNet - Redwood Memorial Hospital | medical | 463.000 | Fortuna |
| NALEMARS | law enforcement | 155.475 | Statewide |
| OES and Fire Mutual Aid "White" | fire, emergency services | 154.280 | Humboldt County |
| PALCO (Humboldt Redwoods Lumber) | fire, logging | 153.260 | Scotia |
| Rio Dell Fire Department | fire, medical | 153.770 | Rio Dell |
| Rio Dell Police Department (Fortuna dispatch) | law enforcement | 155.250 | Rio Dell |
| Rohnerville Airport CTAF | airport operations UNICOM | 122.900 | Fortuna |
| Rohnerville CDF Air Tanker Base | fire, airport operations | 123.975 | Fortuna |
| Scotia Fire Department | fire, medical | 153.320 | Scotia |
| Six Rivers National Forest | fire, emergency, admin | 168.725 | Northern Cal |
Technical InformationThis radio scanner is located near the Rohnerville Airport in Fortuna, at approximately 200 feet of elevation. Meridian Hill is about a quarter-mile to the east. The locale provides line of sight to all of Fortuna and to most of the Eel River delta. It has excellent reception of all North Coast mountaintop repeaters. The antenna is a vertical VHF collinear about ten feet long, mounted at the top of a short mast. The scanner operates 24/7 and monitors about 70 local channels at 20 channels per second. The analog audio is fed into a computer sound card input. The computer processes the audio and converts it to the various requested formats. The digitized bits are then wrapped into packets which are served up using a SHOUTcast server (here's how it's done). Each listener gets an individual 24 kilobit per second stream. Overhead and switching adds a bit more. 300 kbps of upstream bandwidth is dedicated to the scanner and allows the server to send up to twelve streams at once. The scanner audio processing adds about a 30-second delay. By hustling to your computer after the fire siren sounds, you will still be able to hear the original dispatch! This same workhorse computer is also used to process weather data from our local Davis weather station and serve up that data and also some webcam images. We have an excellent DSL connection to our ISP, Sonic.net in Santa Rosa, but we're too far away from the DSLAM to get the top tier. |