Grab a NOAA All Hazards Weather Radio broadcast and stream it to the world.


NOAA ALL HAZARDS Weather Radio transmitters operate with power from 100 to 1000 watts, with a reception range of 'city blocks' to 40 miles if everything is perfect. It often isn't for our location, hardware budget, etc. The frequency used is between Standard VHF television channels 6 and 7...and is narrow band FM with a maximum frequency deviation of 5 kHz.


Stream Quality

...is so important, that several PWS team members audit the site consistently for quality and offline streams. We show you any last update times, and 'flag' any streams with issues, giving both users and providers the last observed streams status, or any station listing updates.

files update

When the team sought NOAA/NWS approval, we agreed to strive for the best possible monitoring and presentation of NWR broadcasts. —Further Discussed and illustrated on the STREAM QUALITY page.


Important Notes:

Once Online, Stuff will happen. Useful info and utilities at the following links:
STREAM QUALITY — Example Audio Issues and solutions
STREAM RELIABILITY Is my stream Online or NOT? — Monitoring and notification utilities you can run locally.


transmittet For Stream Providers ONLY: QRA Access and Alerts
More Information
SUBSCRIBE to Quality and Reliability Analysis and Stream Alerts — Click here.



Hardware

1. PC or something similar.
2. Weather Radio Receiver e.g. Midland WR300
3. Audio cable lash-up from receiver to PC (whatever).
*Radio may have only 'mono' output from line out / earphone plug...
Just ONE of several possibilities:
*Mono to 2 Channel splitter, — Something like this works well.
*Audio Cable to PC (whatever) Line In — something like these
*Some encoders allow single channel to stream as both channels, whatever produces L and R audio.
4. Raspberry Pi + SDR ? — YES! — Tim Urberg has posted scripts and documentation on Github "RTL SDR Darkice Scripts — Discussion and inquires here:WxForum..net.


Encoder

...software (or device) which creates good to excellent 2 channel MP3 audio from your WxRadio output; at 32-64 Kbs (16 Kbs may produce minor aliasing), streaming both channels, with -4 to 0 db average, for best overall presentation. See STREAM QUALITY



A Quality, Reliable Stream
Begins at the Antenna

— Quality starts with reception — If you've a lousy signal, no amount of fancy software or requests for help will improve it... even adding one of those so-called 'extension' accessory antennas may be a waste of money...
BUT — an external ¼ λ ground plane antenna can be dramatic — here's a quick and dirty-- if you can hear a signal, even noisy, this little home built ugly will clean it up.

(...any doubts, click the image, and listen as the antenna is connected to the receiver)

groundplane

Here's a Quick HOWTO from NOAA, and more technical Advanced Info Here
But, you say, you've got a really tough situation? See this $35 bad boy.



Encoders / Stream Servers

Stream to an online Icecast server:
We recommend: wxradio.dyndns.org SEE below



Stream it yourself locally





Let's Do It

First

— Encode your stream as MP3 audio. Stream L & R channels ('centered' Mono)
— 32k to 64k Bit Rate. Higher bit rates just waste bandwidth on narrow band FM audio
— 32k is recommended minimum. A bit rate of 16k or less will definitely produce aliasing.
— "Samplerate" of 22050K is adequate...this is narrow band audio. 44100K is CD standard.

Second

— Stream BOTH L & R Channels! (stereo or 'centered' Mono)

Your audio source may be single channel (mono) L or R. Some encoders allow 'splitting' on set up in some fashion, some do not. Simple mechanical solution is to use a "mono" to "Stereo" "splitter" adapter, which takes single source and splits to two channels for input to computer, or devices L and R line inputs-'both channels".

If your encoder has an option for "Mono" try that first, it may produce better stream quality than "Stereo". or "Joint Stereo" in some situations and configurations.

Third

— Set adequate input and Encoder volume levels! This is crucial!

If your encoder has DB meters/etc, set average peak at -6db to -3db if possible. Don't 'listen'... watch. If there is excessive volume, you'll blast your listeners with a sudden high level stream they're not expecting. Too low a volume level they have to crank up their volume, then the next station is peaking "in the red", and that wakes up the baby ... and Mama's PO'd, So, set levels visually, rather than "it sounds good to me!".

Gotcha! Signal Input On most configurations, 'MIC' input typically expects lower signal levels than a receiver's earphone or line out signal...can result in much higher signal levels, especially if MIC has a 'boost' setting. Use the LINE Inputs if available!

Further Discussed and illustrated on the STREAM QUALITY page.



Getting it Live on the Web

Simple is Better

We've an Icecast Server just waiting for you, courtesy of a PWS friend, Crushed Box Software. Chris has made it real simple, free, and reliable...

Simply point or change the encoder mp3 output to wxradio.dyndns.org
User: source
Password: WxRadio2014
IMPORTANT: The Stream Access URL we will use for WxRadioDynDns will be EXACTLY the mountpoint name... for example, "http://wxradio.dyndns.org:8000/mountpointname" with no extension... ONLY IF you included .MP3 as part of the Mount Point name will it part of our access url... The Valid address is'"http://wxradio.dyndns.org:8000/exactMountPointName" with NO extension. There are illustration links on the "butt" and "M3W" encoders suggested above.

Stream it Yourself

This means the streams are accessed directly from your device, within limits of your bandwidth, and number of 'concurrent' users you can handle... Setups vary, and such things as 'port forwarding' come into play... so we won't spend any time with that... follow the setup directions for your setup and situations.
IMPORTANT: BROADWAVE, and possibly others, may require a different ACCESS url other than suggested by your server's instructions. For Broadwave, ignore any 'add-ons' to the address.. supply us with an address such as "http://12.234.345.678/88:broadwave.mp3". There are illustration links on the "butt" and "M3W" encoders suggested above.



Already Online at Another Website or Server?

Understand that this may not be possible for various reasons. Furthermore, we cannot guarantee compatibility with another platform's streaming server.
ADDITIONALLY such may require different ACCESS url coding than you may give us, we may only spend a brief time attempting to interpret, and which they may change at their own whim. Just so you're aware: If you submit a QRA request for that stream, it may not be possible, you may be delayed while it is researched, or the request may be declined.



Finally: Register Your Stream!

Submit your stream to NOAA Weather Radio Org

Use the 'Submission Form."
Select "New Stream" and fill in all the appropriate fields.

Cheers    Welcome Aboard!     Save a Life!


...and remember:  — Excepting a fault in a NWR transmitter —  
Quality and Reliability is the responsibility of each provider.
A daily, quick, online check of your stream will prevent many 'dead' or 'disabled' feeds.