I’ve shown the latest beta download for my RTL-SDR 2 below. It really is quite a powerful version with a big increase in the number of channels available. I expect it will take some tweaking to bring it in line with the majority of the SDRs out there, but it’s certainly a significant improvement on the original.
I use Debian stable as the operating system for my RTL-SDR. For optimum performance with the RTL-SDR I use the latest version of RTL DSPs accelerated (v2.5) and the free CME (v126.96.36.199). This is a lot of software and not all is essential to maximize performance. In fact, it’s a number of libraries that make RTL-SDR run, but for me, I can’t justify the endeavour of building them all myself on the relatively limited resources of the Raspberry Pi.
I’ve been a bit overwhelmed by all the software and libraries and am, happily, now on the verge of finding out how to get them all installed without having to install and maintain the OS. To be honest, I was never really sure how they were co-ordinated with each other. However, with much help from the SDR people at RTL-SDR.com, the current status is fairly clear on what software or software components I need to use for a given application. Most importantly, for the RTL-SDR it would appear that the RTL-SDR DSP accelerated (v2.5) is not compatible with the Haefely OSR (Optical Spectrum Recorder) (v188.8.131.52) - meaning that the RTL User Interface (UI) does not work. This needs to be resolved by Haefely, particularly since the latest version of Haefely OSR is based around user-defined hardware modules. Fortunately, with these combining relatively little of the performance of the display and effectively being the same as the main processing, it seems that this is possible. d2c66b5586