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Steve Markgraf steve at steve-m.deHi, On 19.02.2013 15:56, Mikhail Popov wrote: > The Problem: > The constant observation of the spike on the tuned frequency in the > ranges after 160MHz or so. Is it known issue or a HW defect? > If it is in the software, please let me know any possible fix. > The screen snapshot and USB information are attached. This is caused by the DC offset of the ADC inputs of the RTL2832, nothing you can do about that, apart from cancellation algorithms or simply offset tuning (so you don't have the signal you want to receive in the middle of the spectrum). Regards, Steve