I’m building a UHF amateur repeater and want to use SDRs for the whole thing so that we can experiment easily without changing hardware much. I have a couple of LimeSDRs and an amplifier already that I can use for this. I still need to get a UHF cavity duplexer, but that’s easy enough.
Has anyone written any gnuradio flow graphs or other software that creates a repeater? I’m happy to contribute, I just don’t want to reinvent the wheel if this has already been done and I just can’t find it.