This is a great project; unfortunately the guy who writes and maintains it (regardless of his talent) is kind of a dick. Notice how there is only one "wideband"

This is a great project; unfortunately the guy who writes and maintains it (regardless of his talent) is kind of a dick. Notice how there is only one "wideband" receiver despite the simplicity of the hardware? There is a reason, and it doesn't mesh well with the hacker ethos that we are all so fond of around here. Anyway as a basic rundown, the implementation does a very large FFT on the high samplerate data coming in from the ADC and then individual receivers can be constructed by filtering and decimating in the frequency domain followed by doing an IFFT which makes the prospect of running many hundreds of receivers achievable on commodity hardware without having to process the full ~1+gbps dataset for each Rx. The specifics are a bit more complicated, but that is the general idea. I would encourage anyone who is deeply interested in this technique to please follow the work of Phil Harman VK6PH and Warren Pratt NR0V who are implementing the same type of processing which they term "Direct Fourier Conversion Receivers" on top of the OpenHPSDR hardware platforms. The code including the software and verilog is all open, and there are open OpenHPSDR hardware designs as well.