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Decoding WAV on WXtoImg If you want to decode your WAV file on WXtoIMG: Resample the recording to 11025Hz, you can use noaa-apt for that.

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Every NOAA pass generates three files: a WAV file containing the satellite audio, a JPEG image in the standard NOAA format of two side-by-side images, and a text file which contains full details of the pass (satellite name, times of AOS and LOS, station details and the 2-line element set).

The SDRSharp receiver normally expects to send the audio signal to the Windows primary audio device

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VB-Audio Virtual Cable- The WXtoIMG software was originally designed to accept the audio output from a commercial receiver. Click the waterfall plot to center on it, and in the zoom window, fine-tune your focus WXtoImg Guide - Les Hamilto The signal will gradually fade in as the satellite moves farther into range. GNU Radio receiver records 44.1 kHz WAV WXtoImg waiting on pass WXtoImg will start recording right on time, but don't expect to see a strong signal on your SDR program yet. I have then transcoded tha WAV file to 16 bit signed, 11.025 kHz using VLC and Audacity, which then was decoded using wxtoimg. The RTL-SDR dongle combined with a good antenna, SDRSharp and a decoding program can be used to download and display these live images several times a day If you want to use the cool sound of NOAA satellites in your next music composition or video let me know The audio output from the demodulator is also dumped to a WAV file.

Each NOAA weather satellite broadcasts an Automatic Picture Transmission (APT) signal, which contains a live weather image of your area. Have a look at the Enhancements menu for all the different optionsД®veryday multiple NOAA weather satellites pass above you. It also uses reference data from CelesTrak to create a map overlay over the satellite image itself. You can simply start it from the command line by running WXtoImg -G. For decoding the received data I've been using WXtoImg. File -> Export Audio Make sure to use WAV (Microsoft) signed 16-bit PCM Save! Decoding. wav containing the APT signal and outputs the raw greyscale image data, false colour images and can even overlay a cloud-cover heatmap indicating precipitation probability derived from a multispectral.

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WXtoImg supports real-time decoding, map overlays, advanced colour enhancements, 3-D images, animations, multi-pass images, projection transformation (e.g This format, which is described in great detail on the celestrak site I hope to write my own code to do this at some point, but for now, have made use of WXtoImg.

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The software supports recording, decoding, editing, and viewing on most versions of Windows, Linux, and Mac OS X. This often needs to be done even if the filenames are MMDDHHMM.wav (month, day, hour, minute) because WXtoImg requires that this date be the time of the start of the recording and not the time when the satellite came over the horizon WXtoImg is a fully automated APT and WEFAX weather satellite (WXsat) decoder. However it may be necessary to change Audio file naming to Other, in the File Names and Locations dialog under the Options menu. Go back to Audacity and adjust the sample rate again and keep going until hopefully WXtoImg will process it Can WXtoImg produce map overlays from recordings made by other programs? Yes. Open the exported audio in WXtoImg and see how much the image has shifted. Then at the bottom in the box labelled Project Rate (Hz) change the value from 11025 upwards by 10Hz or so and then go File->Export and select WAV in the Save as type box.

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To release its full power, registration is required, although the freeware version has more than sufficient features for the beginner This is the most complex of the programs listed. The program can be made to process these WAV files into images in a variety of projections, and can create colour composites of numerous types.

WXtoImg is a feature-laden program that decodes NOAA data in real-time, saving the raw data as WAV files.

Press question mark to learn the rest of the keyboard shortcuts. Is there a way to create a map overlay and generate new Press J to jump to the feed. Otherwise, you may find that neither the coloured regions on the image nor the superimposed land outlines register precisely with the satellite view, as in the image below

If you use WXtoimg to record your WAV files, have set your PC clock accurately and have updated the Keplers, you should have an acceptably good image on screen.

smaller file size, while 16-bit gives better quality. WXtoImg allows recording audio files with 8-bit or 16-bit. Here you can download 2 WAV-files you can use for testing your satellite program. Home WXtoImg WAV files WAV files - Fred van den Bosc