#Hackrf one realtime bandwidth how to
Remember that giving false declarations is a criminal offense and mind you, the guy's at customs are not stupid and certainly know how to use Google, eBay and AliExpress. You will be then taxed according to what you effectively paid for. It doesn't matter what the seller declared - if your package gets selected for analisys (which ALL packages do now, increasing the shipping time by 1-3 weeks on average), then you need to provide: invoice, copy of payment (bank transfer, Paypal, whatever).
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Examples: 1) Portugal (where I live): customs have been much more aggressive in the last 12 months. If you don't already have an RTLSDR and are getting lots of use out of it, and have reached its limits, you're likely wasting your money on a HackRF.īear in mind that different coutries handle customs differently, which is why I started to post about less good experiences for the end user. Also, the potential for disappointment is much higher when you spend over a hundred Euros on something versus something that costs what a decent cup of espresso might cost you. (Or be so much harder to use that the RTLSDR ends up being more useful) OTOH, if you're a security researcher, it is likely extremely useful. Also, do you have an RTLSDR? Don't buy a HackRF expecting it to be better than an RTLSDR in the frequency range covered by an RTLSDR. So make sure you buy it from a seller with a good, long term reputation on the site you buy it. (I have no idea) The thing buyers need to remember though is that the seller is the one who is responsible for support so if you had a problem with your particular unit, the seller is whom you would need to go to. Also, it would be good to do that because its quite possible he doesn't have any problem with it, and that they are decent quality.
![hackrf one realtime bandwidth hackrf one realtime bandwidth](https://www.rtl-sdr.com/wp-content/uploads/2014/10/RF_Analyzer_hackrf.jpg)
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As far as buying a Chinese-made HackRF, you should ask on the HackRF mailing list, likely they would know if they had any tech issues, even though they weren't made directly by Michael Ossmann. Clearly the genuine article as far as tech skills and user enthusiasm. Same goes for the Chinese ham community's web sites. (which you can read the most effectively using Chromium in auto translate mode or Google Translate) There was all sorts of interesting stuff there, actually. So if you want to analyze the very low value signal, then in that case, RBW needs to be lower down accordingly.When I last surfed the Chinese HackRF community web site (years ago) they had all sorts of info in Chinese. Lowering the RBW lowers down the noise floor of the instrument. Thus, signal resolution is determined by the IF filters inside the analyzer.īelow is the example of two closely spaced signals: If a narrow enough filter is used, the two input signals can be discriminated and appear as separate peaks. If a wide filter is used and two equal-amplitude input signals are close enough in frequency, then the two signals will appear as one signal. Resolving Closely Spaced SignalsĪs you change the filter bandwidth, you change the width of the displayed response. These filters are bandpass filters located in the spectrum analyser’s final IF stages. However,resolution bandwidth may also be defined as the 6 dB or impulse bandwidth of the filter Typically, resolution bandwidth is defined as the 3 dB bandwidth of the IF filter.
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Two input signals can be seen as two spectrum waveforms only if they exceed the 3dB bandwidth of the IF filter. RBW stands for Resolution Bandwidth it is used to view distinctly two very closely spaced signals in frequency domain.