[Hackrf-dev] transmitting problem

[n0p [Luis Bernal]]

Which simple rate are you feeding the hackrf?
El 28/6/2015 15:42, "Peter Shipley" <peter.shipley at gmail.com> escribió:

>
> 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" <dominicgs at gmail.com> wrote:
>
>> On 28 June 2015 at 02:43, Peter Shipley <peter.shipley at gmail.com> 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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