Browse Using a Map What functions and features in the Spectrum Dashboard are most useful to you? Join the discussion to help improve the FCC. Your suggestions, ideas and comments will be part of a public discussion that furthers FCC reform. About the Spectrum Dashboard The Spectrum Dashboard provides a public means of reviewing how spectrum bands are allocated and for what uses, and who holds licenses and in what areas. This version provides basic, plain language information about frequencies generally deemed appropriate for mobile broadband (225 MHz to 3700 MHz.) In addition, Spectrum Dashboard contains more detailed information, mapping, and research capabilities for the bands where broadband service is either already available, or potentially could be provided. 700 MHz800 MHz CellularAdvanced Wireless Service (AWS)Broadband Personal Communications Service (PCS)Broadband Radio Service (BRS) and Educational Broadband Service (EBS)2.3 GHz Wireless Communications Service (WCS)Full Power TV BroadcastMobile Satellite Services (MSS)What is Spectrum?

Spectrum is the range of electromagnetic radio frequencies used to transmit sound, data, and video across the country. It is what carries voice between cell phones, television shows from broadcasters to your TV, and online information from one computer to the next, wirelessly. The FCC and the National Telecommunications and Information Administration (NTIA) share responsibility for managing the spectrum. NTIA manages spectrum used by the Federal government (e.g., military, NASA) and the FCC is responsible for spectrum used by others, including individuals (e.g., garage door openers and wireless Internet connections), commercial operators (e.g., radio and television broadcasters, mobile phone providers), and public safety and health officials (e.g., police and emergency medical technicians). Frequency bands are reserved for different uses. For example, 88 – 108 MHz is used to broadcast FM radio to your car. Whereas, one of the groups of frequency bands used for cell phones is 824-849 MHz and 869-894 MHz.

Because there is a finite amount of spectrum and a growing demand for it, effectively managing the available spectrum is an important priority for the FCC. With the FCC Spectrum Dashboard, the public can now learn more about spectrum licenses across the country and areas where spectrum is currently available. Use the graphical spectrum band selection tool to browse allocations, enter specific frequency ranges or select one or more tags to determine potential frequency bands for new broadband products or other purposes within 225 MHz to 3700 MHz. Use an interactive map to find enhanced information on licensees that hold broadband spectrum within a particular county or state. Create a map to depict the total amount of spectrum held in spectrum bands such as 700 MHz, 800 MHz Cellular, and PCS. Search by "common name" to determine who holds spectrum that could potentially be used to provide mobile broadband services, including the total amount of spectrum on a county-by-county basis for spectrum bands such as AWS, BRS, and 700 MHz.

Search by name, radio service, frequency range, channel block, or call sign to learn who holds spectrum licenses around the country. You can also view a map of spectrum totals by county.16' x 7' garage door rough opening The data and analyses provided in the Spectrum Dashboard are for informational purposes and research assistance only. oak shaker doors glazedThe Spectrum Dashboard does not constitute the official licensing records for the Commission. glass door repair stockton caSpecifically, the FCC makes no representations regarding the accuracy or completeness of the information maintained in the Spectrum Dashboard.reclaimed wood doors west yorkshire

Have you wanted to know where your cellular connected project is in the world at any given time? In the same way that a Wi-Fi device can find itself by looking up access points, you can find your cellular device by getting the ID of the cell tower you're connected to, and looking up the location of that cell tower. This will give you an estimate of your location based on the quality of the tower info, and the area that it supports.This is a much less complex approach than Trilateration. If we scanned for nearby towers, we could send that information via the same hook (with some small changes). The cellular radio module on the Electron also supports a built-in trilateration feature called CELL LOCATE, but it's hard to see how much data that sends, or who it's making the request to, and it's not always super accurate, so I wanted a manual approach for this demo. For completeness I'll include the cell locate firmware as well in the project repository.We're going to demonstrate how to ask your Electron for it's current tower, and how to create a webhook to hit a Browser Location API endpoint to get your current location!

There are lots of ways to find out where your cell tower is too if you don't want to hit a Browser Location API.You can jump ahead to the source file here, but lets go through it piece by piece:This code sends the command "AT+UCELLINFO=1" to the cellular module. We're giving it 15 seconds (15000 ms) to respond, and as we get replies we want our callback function _cbCELLINFO to be called.We need to check the messages passed into the callback since we'll be hearing other messages coming back from the module and not just our response. We can do that using sscanf to only parse the message if its a good match. sscanf returns a count of how many parameters it managed to fill out.That looks something like this:Now, behind the scenes, we need to keep reminding the firmware that we're waiting on a response. We can accomplish that by periodically prompting for more responses.Once we get the cell tower information from the module, we can publish that data to the cloud, where the webhook will transform it into a secure web request to get the location.

We'll encode our data in JSON, so we can parse it back out in the webhook.You can find a template for the cellular location hook here. Make sure you get an API key, and update the hook url with your key where it says YOUR_KEY_HERE. Those JSON properties we set (id, lac, mcc, mnc), we can break them back out in our hook for our request.You can create the webhook by filling out the integrations form in the Particle Console, or you can edit the file in place and create it using the Particle CLI:If you prefer point-and-click interfaces, open the console here, and paste in the values like this:copying in values from the hook templatedon't forget the response template and turn off default optionsNow that we have our webhook, lets flash the firmware to your device! You can paste it into the Web IDE and flash from there, but I like the command line.If you watch your events in the console, you should see something like this when it's all working:oh hey it's my real location!And if you're watching the serial output (CLI: particle serial monitor), you should see something like this:Go forth and locate your cellular projects!