There's also a wiki, a user-edited reference resource for communications information and acronyms. RadioReference offers user-contributed frequencies, technical information on communication systems used all over the world, the opportunity to discuss communication-related topics with users globally, and of course live streaming services.
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More than 3000 live audio streams are available to listen to at Broadcastify,
with feeds from public safety, aircraft, rail, and marine live audio
streams. Scanner broadcasts are categorized into Most Popular, Official
Feeds,Alert Feeds, etc. so users can easily navigate to what they might
be looking for in any area of the country. Broadcastify users will soon
have the opportunity to broadcast their own streaming broadcasts.
Listening to streams here is free, an upgraded membership for a small monthly premium gives listeners the ability to listen for an unlimited amount of time, set up alerts, and get rid of all advertisements. For listeners who would like to take advantage of Broadcastify's service on the go, they offer a full featured mobile web site that is supported on most smartphones, iDevices, and tablets, as well as app support that is available for Apple iOS, Android, Blackberry, Windows Mobile, and other mobile devices.
Listening to streams here is free, an upgraded membership for a small monthly premium gives listeners the ability to listen for an unlimited amount of time, set up alerts, and get rid of all advertisements. For listeners who would like to take advantage of Broadcastify's service on the go, they offer a full featured mobile web site that is supported on most smartphones, iDevices, and tablets, as well as app support that is available for Apple iOS, Android, Blackberry, Windows Mobile, and other mobile devices.
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Ustream differs
a bit from the other listings in this article; it's primarily a live
video streaming service that anyone can hook into, either to broadcast
or to watch live streams. However, it's possible to listen to live
police scanners here, and it's become a popular source when other
sources might not be broadcasting. You'll have to do a little digging to
find what you're looking for; try searching for "police scanner" in the
Ustream search field to get started.
Ustream is divided into several categories,
anything from Popular to Entertainment to Education. Most broadcasts are
free to watch, and it's possible to stream your own show if you'd like.
Over fifty million viewers tune into Ustream every month to watch live
sports events, listen to streaming audio broadcasts, or check in with
their favorite television personality. While you're watching or
listening to something, Ustream offers a unique chat feature that allows
users to connect with their fellow viewers or listeners live.------------------------------
TuneIn offers users the chance to listen to more than 70,000 stations from all over the world, in any genre from Jazz to Classical. They also offer a wide variety of public safety broadcasts, anything from air, fire, police, rail, public transportation, and much more. At the time of this writing, nearly 900 public safety broadcasts were available for streaming and listening for free within a Web browser.
Just like Ustream, it takes a bit of searching to find what you're looking for here; you'll want to type "scanner" into TuneIn's search field and then go from there. They do offer a more targeted search by genre; you can search for scanners within Air, Police, Fire, and more. Scanners that are in your local geographical area will come up first in search results. If you know the name of the scanner you're looking for, or the locality that it's attached to, it's a good idea to try that in search results as well. TuneIn also offers a mobile app available for most mobile devices, including tablets and smartphones.
Source: http://websearch.about.com/od/webdirector1/ss/Police-Scanners-Online-Four-Sources.htm#step1
