Scanner Radio Audio Streams and
Frequency Database for
Humboldt, Mendocino, and Trinity Counties
on the North Coast of California.
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NEW and IMPROVED SCANNER RADIO AUDIO STREAMS! Try these links or players and choose the one that works for you. They all get the same stream. If the SHOUTcast server is full, use the RadioReference player. |
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Streams are also available from these broadcasters: |
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 If you have any difficulties in receiving a stream, please send us an email and we will attempt to help you. Technical information for this scanner radio and its broadcasting methods is at the bottom of this page. This scanner monitors all first-responder frequencies listed below (Law Enforcement, Fire, Ambulance and Coast Guard). There are many more active frequencies on the North Coast, and if you are searching for North Coast California frequencies to program into your own scanner, an excellent resource is http://harrymarnell.net/. That site also supplies the scanner feed for Humboldt County north of Eureka. Our scanner monitors several frequencies used by pilots at local airports. These airports are all uncontrolled, meaning they have no tower nor a traffic controller. Pilots announce their locations and landing intentions over the air to keep track of each other. Depending on the aircraft's altitude, you may hear aircraft transmissions from as far away as the Arcata Airport, nearly 30 miles to the north. If you are interested in sport aviation, please visit our web site NorthCoastAviation.com which showcases webcams installed at nearby airports. Update, 9/2011 The analog output from the scanner is now being fed to a Barix Instreamer, a dedicated IP Enabled Audio Encoder (client streaming appliance). More information Update, 2013 We are replacing the existing Radio Shack PRO2041 scanner with the GRE PSR-600, allowing us to use the ARC500 program to change the thing's parameters from our workstation. Because the PSR-600 is so sensitive we will need to get it out of the network closet. We are running new antenna cables and continuing the testing. |
These listings 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 (CalFire), 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 MCI Channel | emergency services | 460.350 | Humboldt County |
| Humboldt County Public Works | public works | 153.905 | Humboldt County |
| Humboldt County Fire Dispatch | fire, medical | 154.07 | 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 |
| 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 |
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Technical Information This scanner has been available on the net since right after broadband arrived in this area in early 2004. Our local network generally had enough bandwidth then to satisfy up to 16 simultaneous connections. For a number of years this was sufficient, but that had to change after the large local earthquake of January 2010 when many hundreds of listeners from all over the world were attempting to connect and were disappointed upon receiving "Server Full" responses. In Fall 2010 the audio stream was moved to our SHOUTcast server located in Los Angeles, tripling our capacity. At the end of that year we also added the broadcaster RadioReference.com. By utilizing these two services we are able to supply unlimited connections. This was very ably proved the following spring when the Japanese tsunami arrived on the West Coast and the two audio servers supplied hundreds of connections during that incident. One of our web servers which hosted the local webcam image monitoring the Eel River was also tested during the tsunami's arrival, serving up that webcam image 310,000 times that day. It didn't even break a sweat. This scanner radio is located near the Rohnerville Airport in Fortuna, on the rugged and beautiful North Coast of California, at approximately 200 feet elevation. This location 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 current scanner is an old warhorse Radio Shack PRO2041. Its analog audio is fed into a Barix Instreamer which processes and formats it into a digital stream. The digitized bits are then wrapped inside packets and streamed to the SHOUTcast server in Los Angeles and also to the Radio Reference Icecast service. Each listener gets an individual stream from these servers. The processing and buffering adds a delay, so after you hear the sirens, you may still be able to hear the original dispatch! If you are a local Humboldt County listener, those packets come back up on the same fiber optic line that we use to send them down to the servers. To get to you they take a round trip of about 1,500 miles, which takes about a hundredth of a second at the speed of light. The weather data on this page comes from our local Davis weather station, and we also provide and maintain several dozen webcam images. Want your own scanner? Visit Scanner Master, the nations oldest and largest scanner-only dealer. Over 30 years of experience in the scanner industry, and they will even program your scanner for you! View the catalog. |