Hi Jonathan, Be aware that the 8 bit resolution of the DAC on the HackRF means that you get quite a bit of quantization noise in the output. You can build a filter bank to reduce those spurs but the end result is that the HackRF's use as a signal generator is not as high as you might like. I ended up getting one of the EraSynth ones off CrowdSupply when they ran their first campaign and it has much lower phase noise and (in my case) a wider range. I have used it as an LO with a mini-circuits mixer to tune the entire amateur band for the HackRF (it also extended the range of my HackRF to the 10Ghz bands as I can downconvert 10Ghz to 1Ghz that the HackRF can handle nicely. While the Minicircuits mixer is good to at least 10dBm I have not tried trancieving with it yet. I also picked up a Morpheus (cheap at $125) which has the mixer built in, but it doesn't have the range that the Erasynth does.
73, --Chuck (AI6ZR) On Sat, Jan 12, 2019 at 8:38 AM Jonathan Guthrie <ka8...@ka8kpn.org> wrote: > Please allow me to introduce myself. I'm Jonathan and I just bought a > HackRF One with the intention of turning it into a software-defined > transceiver for amateur radio use. I figure that a power amplifier and > T/R switch can't be all that hard (yeah, I know, "famous last words") > and I'm a computer programmer at my day job so the software part is at > least do-able. The upshot is that I'm hoping that for a little bit (or > a lot) of sweat equity, I can get an HF transceiver that is similar to > commercial transceivers for a fraction of the cost. That's the plan, > anyway. I'm certain it'll be educational. > > By looking over the recent archives, I see that other people have tried > to do similar things, which is good because it means that I don't have > to start from complete scratch. > > For a long time, I been using one of those TV dongles as a > software-defined receiver to receive FM broadcast, 2m FM, and some 2m > and 70cm SSB/CW signals from satellites, so I don't have to climb (much > of) a learning curve to work with GRC. > > So far, I've plugged my HackRF One in to my Linux laptop and have > listened to some FM radio, and it seems to work. > > At some point, I'm probably going to get another one so I can use it as > a signal generator. Lots of useful things you can do with a signal > generator. > > Anyway, that's me. If I have any questions about how to proceed, I'll > let you know. > > -- > Jonathan Guthrie > ARS KA8KPN > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >
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