Saturday, April 09, 2016

NOAA Weather Radio plus SAME

I am moving more quickly to decoding the Specific Area Message Encoding bursts and the grc is now available on my github page and may be cloned as usual from this instruction.

git clone https://github.com/n4hy/NOAA-WR-All-SAME.git

You will need to build uhd, gnuradio, gr-osmosdr, gr-burst, and gr-eventstream to run all of the code and there might be other additions. I hope I do not have to write new code and go through the hassle of getting it included. The display and controls are getting more complex. I am loading it up with diagnostic information right now.

Saturday, March 12, 2016

NOAA Weather Radio gnuradio receiver for RTL-SDR

NOAA Weather Radio is available in almost all areas of the country and a description of this service is available in the link below. http://www.nws.noaa.gov/nwr/ It is seven channels of NBFM centered on 162.475 MHz. Your local channel may be found here http://www.nws.noaa.gov/nwr/coverage/station_listing.html The GRC representation of a flow graph using RTL_SDR that will display all seven channels is seen below. This flowgraph will also display the entire band in the eighth plot. The sliders control squelch, RTL-SDR clock offset, a superfluous center of band control, and channel assignment. This flow graph will be avail shortly on my github repository. I am going to add a blog entry which will detail work underway, planned for future releases, and as always, it will always be GPL and your help will be welcomed. 73s Bob N4HY