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SDR - Software Defined Radio / Re: RTLSDR based scanner for P25
« on: January 19, 2019, 1516 UTC »
I'm not a hardware (or software!) guy so probably not the most informed opinion....but i wonder if dedicated hardware still has the edge for scanning purposes. I think the fast scanners do about 100 channels/s (of course, you have to identify the channels first!), but with the wide bandwidth of the SDRs it would make sense that they could identify and track transmissions a lot faster _as long as the transmissions are in that reception bandwidth_! I think it would be an interesting exercise to build something on top of a framework like rtl_power that grabs a power spectrum over a chunk of bandwidth and then shifts to the next chunk, etc. while looking for repeated transmissions on a frequency over a user-defined time frame. Unfortunately by the time i have those skills everything will be digital and encrypted, probably 
Anyone care to comment on the bottleneck is for SDR based scanners....data transfer over the network, demodulation,
There's also the issue of with things going digital, it's not so much the # of different frequencies you can scan but whether or not you can parse the data coming in.
Anyone care to comment on the bottleneck is for SDR based scanners....data transfer over the network, demodulation,
There's also the issue of with things going digital, it's not so much the # of different frequencies you can scan but whether or not you can parse the data coming in.
