HFU HF Underground

Technical Topics => SDR - Software Defined Radio => Topic started by: Elf36 on October 01, 2021, 1144 UTC

Title: Waterfall images
Post by: Elf36 on October 01, 2021, 1144 UTC

I can't seem to find it now, but there was a QSL card for Panda Radio and a screen shot of SDRuno with a Panda Bear clear as day. How to people create images within the waterfall.

Title: Re: Waterfall images
Post by: Elf36 on October 01, 2021, 1342 UTC

Apparently Ham's are also putting their calls into the waterfall display.

Title: Re: Waterfall images
Post by: NJQA on October 01, 2021, 1424 UTC

https://www.reddit.com/r/amateurradio/comments/3zen9b/encoding_images_in_waterfall_displays/?

Easypal and FLdigi have some capabilities to do this.

Title: Re: Waterfall images
Post by: Elf36 on October 01, 2021, 1634 UTC

Thank you.

Title: Re: Waterfall Images
Post by: ~SIGINT~ on October 02, 2021, 0001 UTC

I have also seen it on the MARS data channels. Unfortunately the one time when I saw it I wasn't ready to screen grab it. It caught me by surprise. I think it was either on one of the Air Force (AA) or SHARES net.

Title: Re: Waterfall images
Post by: Josh on October 28, 2021, 0041 UTC

Another neat trick is to record some ota music and play it back ota from the image. Just for proof of concept of course.