# Foundations - [Prepare the Application Environment](https://sdr-enthusiasts.gitbook.io/ads-b/foundations/prepare-the-project-environment.md): In this step, we prepare the folder structure for our "adsb" application, and create a ".env" file containing our basic details. - [Deploy "ultrafeeder"](https://sdr-enthusiasts.gitbook.io/ads-b/foundations/deploy-ultrafeeder-container.md): The "ultrafeeder" container is the heart of our "adsb" application. It receives 1090MHz ADS-B ES signals from your SDR, and demodulates ADS-B messages, making them available for all other containers. - [Deploy "dump978" (USA Only)](https://sdr-enthusiasts.gitbook.io/ads-b/foundations/deploy-dump978-usa-only.md): The "dump978" container receives 978MHz UAT signals from your SDR (a different SDR from the one receiving 1090MHz signals), and demodulates ADS-B UAT messages, making them available for all other cont - [Container Monitoring and Management](https://sdr-enthusiasts.gitbook.io/ads-b/foundations/common-tasks-and-info.md): Now that we have our first container up and running, common management and monitoring tasks and information are outlined below and will apply to the remainder of this guide. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sdr-enthusiasts.gitbook.io/ads-b/foundations.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.