DrVarnik on YouTube has posted a tutorial video on how to receive, decode and plot AIS information. The Automatic Identification System (AIS) is a system used for automatic tracking of large ships and passenger boats. It is a similar idea to tracking aircraft with ADS-B. His method uses a RTL-SDR for receiving the AIS signals with SDRSharp, decoding received signals with AISMon and plotting the decoded information with OpenCPN. He uses VB-Cable for looping the audio from SDRSharp to AISMon, but if you have a ‘Stereo Mix’ or equivalent feature with your soundcard, that will be unneeded. Best results will be achieved using a narrow-band vertically polarized antenna tuned for 161.975 MHz and 162.025 MHz (marine VHF). A directional antenna would also likely be a benefit. You can find some designs to try lower down the page. For safety, please only use this guide on land! Wouldn’t want you getting lost at sea.
NeedSec just posted on YouTube a video illustrating how to use a RTL-SDR to decode Flex 1600 pager traffic using PDW, VB-Cable and SDR#. It is always surprising there is still pager traffic as when is the last time you can remember seeing someone with a pager in public. We’ve shared videos showing this sort of thing before, but NeedSec gives a great overview of what you need to do to accomplish successful decoding of Flex-1600.
This is decoding P25 with DSD and SDR#. It isn’t the greatest, but I guess it’s a work in progress. You need a very strong signal, and just the correct audio levels and settings. Most of the video is P25 bits and pieces. My audio is not clipping, it’s simply a problem I cannot figure out with stereo mix. – Source
This is the official release of WFM Stereo on SDR#. It has a stereo enhancement that provides better stereo separation and higher audio fidelity, I have tested this against WRPlus and SDR# is much better audio wise, and keeping a lock on Stereo. You can watch me clicking FM Stereo on and off, and on the top of the screen you can watch the (( stereo )) icon go on and off. – Source
This is decoding P25 with DSD and SDR#.You need a very strong signal, and just the correct audio levels and settings. This is video number TWO where I got about a 98% decode. I had about 71% inlevel and it started working great. Please don’t mind the high pitched crackle in the audio, it is a problem with my sound card and NOT an artifact in the decode itself. When decoded there is nice clean audio (well, as clean as you can get with the horrible codec motorola uses!). sdrsharp.com – Source