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James Sharp james at fivecats.orgI've been playing around with rtl-sdr as a way to stream trunking radio and air band traffic. I've done a bit of research and found people who are using multiple dongles, one to digest the control channel and one or more to tune and receive the voice channels as the talk groups come and go. They're also using multiple dongles and/or squelch scanning to stream airband signals Around here, all of the channels of the trunking system as well as all of the "interesting" fit inside the bandwidth of a dongle running at 3.6Msps. So, my question is this: Would it not be more efficient to have a single tuner dongle outputting all of its samples over multicast (or into a shared memory segment for that matter, if you want to stay on the same host) and then having a bunch of decoder processes listening to the samples and decoding what they need out of them?