Amateur Radio Stack Exchange
Amateur Radio Stack Exchange

Questions tagged [hackrf]

29 questions
9
votes
3 answers

Is it legal to transmit with HackRF one?

Is it legal to transmit using HackRF one (in Germany), the purpose is to do some Lab research and Academic experiments. for example i want to broadcast an FM signal using HackRF one and try to receive it using another hardware (RTL-SDR). If no is…
A.SDR
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4
votes
1 answer

HackRF One — Expected 'hackrf_transfer -t' file format and its creation?

What file format does the HackRF One expect on the command line, using the -t option with hackrf_transfer? Also, how would I create or convert that format from a standard WAV file? I was expecting the following to transmit a 36 second wav…
M6JNY
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4
votes
0 answers

GNU Radio and OsmoSDR AGC for Hack RF

I am trying to construct an automatic gain controller for my HackRF when in receive mode. I am using the gr-osmosdr block in GNU Radio to interface with the HackRF. I am then running my received I and Q signal into a squaring block, and then an…
Severe-Building-8307
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3
votes
3 answers

The amplifier does not work for hack rf one

Good day! I ask for help with repairing the hackrf one amplifier. Doesn't work at all. Accepts signals without amplifier, and LNA and VGA adjustment in SDR sharp works too! But when I put a tick on "Amp", then all signals disappear. As I understand…
Антон
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3
votes
4 answers

How is the Hackrf able to achieve 20MHz of bandwidth with an ADC that only allows 22Msps?

The way I understand it, is that to avoid aliasing on an ADC, you have to be in the first Nyquist zone (so half the sampling speed). What doesn't make sense to me is how the Hackrf is able to bypass this, and achieve 20MHz of bandwidth, even though…
camerakid
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3
votes
0 answers

HackRF One and IoT overloaded?

I'm transmitting Z-Wave frames using HackRF One in loop, one frame every second. Has anyone clue why are some frames not transmitted? You can see several too long gaps between frames on Waterfall (RTLSDR dongle + GQRX). I'm pretty sure the problem…
Simon Štefunko
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2
votes
1 answer

Choose the right dongle for NOAA images visualization with GnuRadio

I'm a newbie in such domain and I was reading some articles around the internet and what attracted me most is using the GnuRadio to see NOAA images using some cheap hardware. I looked further it turned out that this cheap hardware is only for…
A.nechi
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2
votes
0 answers

Direction Finder using directional antenna, digital signals amid clutter

There are several methods for implementing direction finder. 1. One of the method is by using directional antenna pointing to target device, and reading the received signal strength from the target device. This method also need the device to keep…
ransh
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2
votes
2 answers

HACKRF_ERROR_NOT_FOUND

I have connected my HackRF to my computer that runs Ubuntu and it was working fine until now. It gives me an error: FATAL:Failed to open HackRF device(-5) HACKRF_ERROR_NOT_FOUND Has anyone had the same experience?
Jack
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2
votes
3 answers

Loss of information and aliasing in superheterodyne receivers

For a radio / SDR that downshifts a signal to an IF / intermediate frequency band, wouldn't information be lost in the case that the original signal is above the IF sampling rate? For example, the HackRF One has a 20Msps sampling rate, but a…
Ken - Enough about Monica
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2
votes
0 answers

DVB-T gnuradio loopback

I have recently had access to two SDRs a hackrf and a Plutosdr through my university.I am now trying to experiment and learn more about wireless communications and how to implement some examples on an SDR. I have tried to implement a simple DVB-T…
instantrame
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2
votes
2 answers

Signal in the center frequency of my SDR spectrum always

I'm pretty new to SDR, but I understand a little bit about RF. On all 3 of my SDR device (two RTL one HackRF) The center frequency is always full of interference from something unknown.....it doesn't appear to be static, because if I use a chirpchat…
Dani
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2
votes
0 answers

Is this signal BFSK or BPSK?

I'm trying to analyse a signal from a HVAC remote control (864 MHz) with my HackRF, but I'm facing an interrogation about the used modulation: Is it BFSK (frequency modulation) or BPSK (phase modulation) ? Here's what the signal looks like, once…
Rascafr
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2
votes
1 answer

Legal aspects of the HackRF one / SDR in Switzerland?

I would like to know, what I can legally do with SDR / a Hack RF One in Switzerland? What are the limitations concerning sending and receiving? Do I need any licenses for that? If so, which ones, and for what are they usable?
wdjpng
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2
votes
0 answers

unexpected output using HackRF One with rx_power

I am trying to make a wide scan from 24M to 1700M using HackRF One by using: rx_power -f 24M:1700M:1000k -g 50 data.csv This gives me a nice output like this. 2019-01-10, 15:18:26, 24000000, 25000000, 1000000.00, 1, 38.42, 38.42 When I try to…
Richard Vijgen
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