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Help needed with simple narrow band transmitter with HackRF


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I am attempting to create a narrow band transmitter, over the range of 3GHz to 6GHz, using HackRF One and gnuradio-companion.

Though, by cranking up the IF gain on the 'osmocom sink', I am able to see my desired peak on a Spectrum Analyzer, the problem is I also see atleast one other, usually bigger, peaks at other frequencies 100s of MHz away.

I have tried to attach the program, but the forum informs me 'you aren't permitted to upload this kind of file' (and I've tried sending .grc, .py, and even renaming with a .txt).

Please let me know what you need to know about the program, and I will send it.



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