I generated the signal with my own code & used a rtlsdr dongle to verify transmission. the graph images were generated with gnuplot.
I can clearly see the recorded data being transmitted with sdr# and the device device respond ( a Insteon light switch ) when I attempt to transmit my own data the hackrf does not transmit anything at all not even a blip. I've tried adjusting the gain( including no gain) & carrier freq eyeballing the sampled and generated data, they are both same I've have manually verified both files have the same sample rate, carrier & deviation. Both are 8bit, signed interpolated IQ data. typo : the FSK2 deviation is 75000 ( 150k peak to peek ) not 15000. On Jun 28, 2015 05:00, "Dominic Spill" <[email protected]> wrote: > On 28 June 2015 at 02:43, Peter Shipley <[email protected]> wrote: > > I am trying to transmit FSK2 at 915Mhz and can't figure out what I am > > doing wrong or what I am missing. > > > > I am trying to transmit a generated FSK2 signal. > > (Specs : freq=914973000, sample rate=2400000, FSK2 data with a > > deviation of 15000 ) > > How did you generate the signal? > > > the hackrf device does not transmit anything at all when I send my IQ > data > > (I can demodulate both localy with out error ) > > How are you testing whether or not it transmits anything? Do you have > a second SDR to monitor it with? >
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