If you have been using RTL-2832U sticks for SDR applications, you probably are very familiar with SDR Sharp. Youssef has published a new simplified ADS-B decoder which is now part of the SDR-Sharp software download. The ADS-B Sharp project has been around since early December, but is now become a bit more mature. We have discussed the Windows based RTL0190 decoder a bit on Ham Radio Science, so it would be natural to compare the two decoders. However, both decoders are still under development, so anything we say here is most likely subject to change. With that being said, ADS-B seems to have a slight advantage in frame rates. With about 8 aircraft in review ADS-B Sharp reported a frame rate of around 25, while RTL1090 showed about 9. This allowed ADS-B Sharp to “see” a couple of more aircraft than RTL1090 was able to in the same time frame. Like RTL1090, SDR-ADS-B outputs it’s data in AVR format which makes it compatible with Plane Plotter and Virtual Radar Server. ADS-B Sharp is also very simple to set up. If you are installing a RTL2832U stick for the first time, you will need to install the Zadig drivers. The simply download ADS-B Sharp and start the program. You will then need to tell PlanePlotter or Virtual Radar Server to use a Beast device with the IP port of 47806. Thats it. Rtl1090 is also pretty easy to install, but it does take a couple of more steps to get it going. RTL1090 certainly wins in the user interface department with ADS-B Sharp having a plainer simpler design. However, ADS-B Sharp seems to use a few less CPU cycles, which may make it a better decoder for using with computers with slower processors. Both RTL1090 and ADS-B Sharp do a great job of decoding ADS-B packets using RTL2832U DVB-T sticks. However, you might want to give ADS-B Sharp a try and see how it works for you. It may do a better job for those in areas with lots of ADS-B traffic.