Below, you'll find more information about each of these entities. Here's a shortlist,
Scroll down for a more detailed list with links
FCC.gov
WebSDR.org
Brodcastify.com
LiveATC
RailroadRadio.net
ARRL.org
QRZ.com
ARNewsline.org
major.io
The Federal Communications Commission (FCC) is an independent U.S. government agency responsible for regulating communications by radio, television, wire, satellite, and cable across the United States.
A WebSDR is a Software-Defined Radio receiver connected to the internet, allowing many listeners to listen and tune it simultaneously. SDR technology makes it possible that all listeners tune independently, and thus listen to different signals; this is in contrast to the many classical receivers that are already available via the internet.
MOBILE USERS: Unfortunately there's no official app for websdr, but there is an app. It's called Pocket TX RX.
Android Downloads:
Pocket TX RX Lite (ad supported)
Pocket TX RX Pro ($7.49)
It takes a little getting used to because it's not conventional Android navigation, but once you're used to it, it's pretty awesome.
Listen to scanner feeds worldwide!
There's also an awesome scanner app for your mobile device called "Scanner Radio" that pulls from this same database.
LiveATC.net (Live Air Traffic Control) is where you can go to listen to MANY control towers across the globe. Simply search for Airport or ARTCC code or frequency.
They also offer an app can download on various devices instead of using a web browser (for $3.99)
Listen to train broadcasts from all over the North American continent.
There is no mobile app for this site yet, however there is a page for mobile users that makes it easy to switch from stream to stream.
ARRL.org is the official website of the American Radio Relay League (ARRL), the national association for amateur radio in the United States.
Founded in 1914 by Hiram Percy Maxim, ARRL represents the interests of amateur radio operators before federal regulatory bodies, provides technical advice and assistance, supports educational programs, and sponsors emergency communications services.
The website offers news, information, resources, and membership benefits for its members, including access to the QST magazine and various amateur radio programs.
QRZ.com is an amateur radio website that lists almost every callsign in the world, providing a resource for ham radio enthusiasts to find and connect with other operators.
Founded in 1992 by Fred Lloyd, the site pulls information directly from the FCC database and other international online databases. Registered users can edit their data for accuracy and add additional information about their station, antennas, and other interests.
QRZ.com is recognized as a valuable tool in the ham radio community, similar to how Facebook is used in social media.
The name "QRZ" is derived from the Q code "Who is calling me?", which reflects the site's purpose in assisting amateur radio operators with call sign lookups.
The website also maintains a presence in space, with a copy of the CD-ROM containing all U.S. call signs aboard the International Space Station and the Russian Mir space station.
From their website:
"Amateur Radio Newsline™ is a free service to the amateur radio community. We produce a weekly audio news bulletin called a “QST” or “bulletin of interest to radio amateurs” that is delivered by a downloadable MP3 audio file from our website or through a podcast subscription. Operations are supported primarily by voluntary donations from individual amateurs and amateur radio clubs. We are a 501(c)(3) Federal tax-exempt corporation and most contributions made to us are tax deductible. (Please check with your tax advisor if you have any questions regarding such donations.) "
Every Saturday, we broadcast their latest news on 50kuw's Zello channel.
...some good reading.......