Okay, but what about using the signal from the antenna-input directly? I can't use an RF splitter / power divider to the non-amplified signal, I might get away with that buffer board? Not sure about the usable bandwidth, though. Might be worth a try. In that case, I still need some sort of? RX/TX signaling, in order to tell the buffer board when to disconnect.
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If that approach is not viable at all, I might have to dig deeper on how to get the I/Q data directly. Although, I'm assuming that's better done in software. I'm aware, that the QMX firmware is under active development and at some point in time we might get an API, which would, if capable be a fist-class solution. I'm unsure, though what priority that feature has, and we can't expect Hans to do all at once. Therefore, I'm looking for alternatives. Also, I like the idea of processing the analog signal with a second, independent device.