On Thu, Sep 04, 2014 at 04:32:44PM +, McDonald, J Douglas wrote:
But the performance (i.e. gain, noise figure, and image response) vs
frequency 10-6000 MHz is not what I was asking. That was the IF
response, i.e. for antialiasing knowledge. Does that vary with the RF
frquency? That
On Thu, Sep 04, 2014 at 07:01:58PM +, McDonald, J Douglas wrote:
The idea is to know what the aliasing properties of HackRF are.
That is, say I set it to receive 100 MHz at the center of the bandpass
and set the sample rate at 10 megasamples per second, IQ.
10 megasamples per second IQ
On Wed, Sep 17, 2014 at 06:59:41PM +0430, Mehdi Asgari wrote:
Every time that I execute ‘hackrf_info’, it gives the error
“HACKRF_ERROR_NOT_FOUND (-5)” , but when I execute the command
instantly after the first one, it shows my device’s info.
That might be a symptom of:
On Sun, Sep 28, 2014 at 07:58:50AM -0400, Luke Berndt wrote:
I am not sure what would cause the offset to change, but reverting the
firmware would revert the frequency offset.
Nice find! That is probably due to an adjustment of the
(firmware-controlled) load capacitance for the main crystal
On Fri, Sep 26, 2014 at 10:04:20AM +0200, Simon IJskes wrote:
Is it intentional, that you need to reopen the radio if you want to
switch between send and receive?
Yes. HackRF is half-duplex. You must stop TX before RX (or vice
versa).
Mike
___
On Mon, Oct 20, 2014 at 01:25:16PM -0400, Guan Yang wrote:
Out of curiosity, what is needed to do full duplex?
I added a FAQ: https://github.com/mossmann/hackrf/wiki/FAQ#q-14
I've seen amateur radio repeaters that have a diplexer. Would a
hypothetical full duplex HackRF work the same way?
I
On Fri, Nov 07, 2014 at 08:02:56PM -0200, Vitor Augusto wrote:
I did some screenshots (link below) with signal seen with
constallation plot over the range 330MHz-380MHz. By now, my antenna
works in the range 75MHz-330MHz. Is that right? I do need to by
another one if I want to work at ~1GHz?
On Fri, Nov 07, 2014 at 01:52:58PM -0500, pete M wrote:
would it be hard to set my Hackrf to do the following:
send a signal in fm with a 1khz audio modulation at 3khz deviation?
Same fm signal, modulation level 600 hz deviation with a 103.5 hz tone?
This is well within the capabilities of
On Fri, Nov 07, 2014 at 06:37:28PM -0500, pete M wrote:
BUT I do learn fast..
You might like to start here:
http://greatscottgadgets.com/sdr/
I'm working on resuming lessons this month.
One other question.. can it also sweep in tx something like 7 mhz band
of frquency very fast then start
On Tue, Dec 02, 2014 at 05:49:38PM +0200, Ibrahim Basaran wrote:
Starting from 2700MHz the signal strength gradually decreases.
That is expected. See:
https://github.com/mossmann/hackrf/wiki/HackRF-One#transmit-power
Mike
___
HackRF-dev mailing
...@gmail.com şunları yazdı:
I am confused.
I thought he was talking RX not TX.
Stefan, VE4NSA
On Tue, Dec 2, 2014 at 6:50 PM, Michael Ossmann m...@ossmann.com
mailto:m...@ossmann.com wrote:
On Tue, Dec 02, 2014 at 05:49:38PM +0200, Ibrahim Basaran wrote
On Wed, Dec 03, 2014 at 10:05:55AM +0900, OSQZSS wrote:
Is the absolute maximum TX power achieved with the maximum
TX VGA (47dB) and TX RF amplifier (14dB)? If I set the TX VGA
to zero and disable the RF amplifier, can I expect -61dB TX power
from these maximum values?
Yes, but it also
You should also update the CPLD:
https://github.com/mossmann/hackrf/wiki/Updating-Firmware
With new firmware and old CPLD I would expect the spectrum to be
inverted in some cases. A fixed frequency offset would be puzzling
unless it is a misinterpretation of inverted spectrum (which could be an
On Tue, Dec 16, 2014 at 11:22:09AM +0100, Fabian Noeller wrote:
i do some embedded SDR with die hackrf and i want to use the HackRF
als SPI Slave to my dsp board, but there is no free spi so ein
thinking about removing the External Flash (W25Q80BV).
You can use SSP0 for an external interface
units? I have sent you a number of emails, and posts here as well, and
you have yet to respond. What's the deal? Please respond with RMA
instructions.
On 1/23/2015 2:24 PM, Michael Ossmann wrote:
Could you please share the details of your noise figure test method?
Thanks,
Mike
On Wed, Feb 18, 2015 at 12:09:16PM +0530, Tony Hagen wrote:
Is there any one who can tell me where the bootloader file is stored
in hack rf if it’s a fresh hack rf with no firmware loaded
Like to know which which Chip in the Schematics
The DFU bootloader is stored in ROM on the LPC4320
On Thu, Jun 04, 2015 at 05:15:18PM +0200, Karsten von Hornbostel wrote:
My question is, since using 2 Msps worked all the time but was not
recommended, is it recommended now to use 2 Msps or may there still be
distortions or whatever when using sample rates below 8 Msps?
The 8 Msps
On Sun, Jun 28, 2015 at 08:49:40AM -0700, Peter Shipley wrote:
As you may have guessed, my generated IQ stream was made with a loop
calling sin/cos and timing the transitions to times where IQ can swap
symmetrically ( without jumping ).
what is then proper method for making phase transitions?
On Mon, Jun 29, 2015 at 03:00:20PM +, Yen, Stephen wrote:
The wiki mentions that the HackRF One can be programmed for
stand-alone operation but I can't seem to store the flow-diagram
procedure into the device through GNU Radio.
See the firmware directory for information about building
On Tue, Jun 30, 2015 at 07:57:27AM -0700, John Malsbury wrote:
Why not use an nco for fsk? Not sure if you're using gnuradio but you
can look at the cpfsk modulator as a reference.
I strongly agree. I forgot that this was FSK, not PSK. In either case,
it would be a good idea to use existing
On Thu, Jul 02, 2015 at 12:08:20AM +0800, Srinivasan T wrote:
I have seen straight line during wi-fi scanning ( attached image file -
circle in black color at http://imgur.com/pvfEaZk ).
If you are asking about the horizontal lines, those are probably 802.11.
If you are asking about the
On Fri, Jul 10, 2015 at 06:23:53PM -0700, Ilker Temir wrote:
Has anyone tried poking at LPWAN protocols and implementations (like
Sigfox or LoRA) with HackRF or any other SDR platform? They are
designed for low power, very low bandwidth (i.e. 10b/s for Sigfox) and
very long range M2M
On Sun, Jul 12, 2015 at 01:00:53AM +, Jason Cooper wrote:
I should clarify: I know about the various AIS SDR implementations
out there. I'm interested in running code on the hackrf with just a
battery pack. UI being my $mobile_device.
That's why I mentioned the PortaPack
On Sat, Jul 11, 2015 at 06:35:37PM +, Jason Cooper wrote:
Now, for some cool thoughts: AIS for maritime tracking?
There is already an implementation of AIS decoding for the PortaPack:
https://github.com/sharebrained/portapack-hackrf
Mike
___
On Mon, Oct 05, 2015 at 07:48:32AM -0400, Richard Smith wrote:
>
> Based on DEF CON 17 - Bluetooth Smells like Chicken video I have
> watced with Dominic Spill, Michael Ossmann, and Mark Steward. All of
> this seemed possible with the USRP.
>
> Has similar stuff been done w
On Mon, Oct 05, 2015 at 08:01:42AM -0400, Richard Smith wrote:
>
> Might be worth a note in the web page errata or in the FAQ. I'm sure
> this issue will come up in other lessons as well.
Thanks for the reminder, Richard. I meant to add that to the errata a
while ago. I just updated it.
Mike
Ariel,
Sorry about the delay! We sent you a replacement on Friday.
Mike
On Sun, Nov 22, 2015 at 07:38:37PM -0500, Ariel Diaz wrote:
>
> Hello all,
>
> Earlier in October I reached out with some issues with my hackrf and Mike
> contacted me with the possibility of getting a replacement unit.
On Sat, Dec 05, 2015 at 05:15:42PM +0330, MA wrote:
>
> Update: I think my HackRF is not faulty; I created a simple FM
> transmitter with GNU Radio and set the frequency to 2.0GHZ; But I
> think it may have a drift/offset problem, because on another SDR
> (receiver), I get that FM on about 14KHZ
On Tue, Feb 23, 2016 at 11:46:27AM +, Andrew M.A. Cater wrote:
>
> I have some folk at ARM who would be interested to know this: I'd also
> be very interested. SDR might actually be a good candidate for the ARM
> 8 64 bit architecture - or even the ARM 8 A 32 bit Cortex core that
> has just
On Mon, Feb 29, 2016 at 07:54:45PM -0800, Cinaed Simson wrote:
>
> Hi - are the RX and TX amplifiers for the HackRF One the MGA8163?
They are Avago MGA-81563.
Mike
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HackRF-dev@greatscottgadgets.com
On Tue, Apr 26, 2016 at 03:26:00PM -0700, Patrick Sathyanathan wrote:
>
> I finally got a reasonable looking spectrum by increasing the return
> delay to 200ms.
>
> Why do I need such a large delay ? Is there any way to reduce host
> based retune time ?
That sounds like a bug. We can help you
Release 2017.02.1 is tagged in git with packages available for download:
https://github.com/mossmann/hackrf/releases
HackRF 2017.02.1 Release Notes
To upgrade to this release, you must update libhackrf and hackrf-tools on your
host computer. You must also update firmware on your HackRF. It
Dana,
If it is a Great Scott Gadgets unit, we would be happy to replace it for
you.
The part is available from several distributors:
http://www.findchips.com/search/LPC4320FBD144%2C551
However, I wouldn't be so certain that it is the root cause of the
fault.
Mike
On Fri, Jan 06, 2017 at
On Tue, Mar 28, 2017 at 05:19:27PM +0200, wrote:
>
> I have set of data which I have captured in the past using RTL-2832 usb
> devices and SDRSharp software under Windows.
...
> What kind of operation should I perform in GNURadio Companion
> between the source and sink file blocks?
It
On Mon, Jul 03, 2017 at 02:56:47PM +0530, rohan sundar wrote:
>
> The data throughput rate for Rx is ~10 MiB/s, which is half of what is
> expected (~20 MiB/s).
>
> The board is a modification of the Hackrf project, which has an FPGA
> instead of the CPLD for onboard baseband processing
On Fri, May 26, 2017 at 02:26:03PM +0800, RizThon wrote:
>
> I see that the minimum number of samples per frequency is 8192. Would it be
> possible to lower it to get, I suppose, shorter capture times?
Theoretically, yes, but there is a quite a lot of firmware work that would have
to be done in
On Thu, May 25, 2017 at 03:58:51PM +0800, RizThon wrote:
>
> What can I expect exactly from a performance point of view? I've read
> "sweep rate of 8 GHz per second" so does that mean that to scan
> 100MHz, it'll take 100M/8G=1/80s to scan? It should depend on the
> capture time and tuning time,
disabling the baseband filter via the LPF register. We'll be operating
> in transmit mode for most of the time anyway, and we can apply digital
> filters to any received signals we need to clean up.
>
> --Frank
>
> On Tue, Sep 19, 2017 at 10:39 AM, Michael Ossmann <m...@os
e MAX2837 datasheet:
> https://datasheets.maximintegrated.com/en/ds/MAX2837.pdf. Is it just
> straight up wrong?
>
> On Tue, Sep 19, 2017 at 5:56 PM, Michael Ossmann <m...@ossmann.com> wrote:
>
> > Frank,
> >
> > I've tried without success to disable the b
Frank,
Yes, you can replace MAX5864 with MAX5865. However, you may still run into
bandwidth limitations from the MAX2837 (31 MHz maximum baseband filter
bandwidth) and SGPIO (our implementation tops out at about 25 Msps).
Michael
On Mon, Sep 18, 2017 at 06:58:19PM -0700, Frank Liu wrote:
>
>
Yes, two HackRF Ones can be used as a two channel coherent receiver if you
connect their clocks with an SMA cable. If you need to know the phase offset
between them, you'll have to calibrate each time they start up.
Michael
On Sat, Oct 07, 2017 at 02:59:27PM +, Enildo Sánchez via
Matt,
It is a common problem to need to pad the start and/or the end of data
fed into GNU Radio in a scenario like yours. Various blocks in GNU
Radio require a certain amount of sample history to be full before they
produce output samples and require that buffer to be flushed in order to
produce
Andrew,
Was that audible noise from the hardware itself (not the attached USB
host)?
Thanks,
Mike
On Thu, May 24, 2018 at 11:45:38PM -0500, Andrew Onyshchuk wrote:
>
> Dominic,
>
> Not after firmware update - I was using the same firmware (some git master
> from 6 months ago) for some time.
Yes, that definitely sounds like a hardware failure in a voltage
regulator. We'll replace your HackRF.
On Fri, May 25, 2018 at 12:25:12AM -0500, Andrew Onyshchuk wrote:
>
> Hi Michael,
>
> Yep from the hackrf itself.
>
> Thanks,
> Andrew
> On Fri, May 25, 2018 at 12:
On Wed, Feb 07, 2018 at 08:58:43PM +0900, OSQZSS wrote:
>
> Where can I find the bill of materials of the Opera Cake board?
It can be exported from the KiCad source files:
https://github.com/mossmann/hackrf/tree/master/hardware/operacake
Mike
___
On Sat, Feb 03, 2018 at 10:39:08PM +0100, Jahn wrote:
>
> At https://greatscottgadgets.com/sdr/11/
> there is tutorial how to use HackRF to replay a captured radio signal.
> But how to capture the signal if I do not know the exact frequency?
You'll need to determine the operating frequency of
On Mon, Feb 19, 2018 at 02:00:48PM -0800, Neal Martini wrote:
>
> Are there any video tutorials in the GreatScottGadgets series after the 11
> that are available at the GreatScottGadgets website?
not yet
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HackRF-dev mailing list
On Tue, Feb 20, 2018 at 04:38:53PM -0800, Neal Martini wrote:
>
> For example, I see that one of the commands generated by the osmocom is
> self.osmosdr_source_0.set_center_freq(center_freq, 0). I can see the osmosdr
> Include File source.h in the Gnu directories, but I can't find the source
>
Maybe you had a ground loop problem?
On Tue, Sep 04, 2018 at 12:06:47PM -0700, James Brown wrote:
>
> It was one of those “something’s not working on my Hack. I’ll try my second
> one” things.
>
> I admit I was doing weirdness on the poor boards. I was trying out running
> USB over CAT 5 and
On Sun, Sep 02, 2018 at 08:47:12PM +0200, kamilkarp...@interia.eu wrote:
>
> What is shape of output RF signal (carrier wave without modulation).
> Is it sine or square?It shoud be sine in 2.3-2.7ghz because its
> outputed directly from MAX transceiver, but what about other
> frequencies?
The
The output impedance is 50 ohms.
Mike
On Sat, Sep 22, 2018 at 12:32:55AM +, Gavin Jacobs wrote:
>
> What is the output impedance when transmitting at 147.42 MHz with and without
> the output amplifier?
>
> I’ve built an RF amplifier to boost the output about 26 dB, but with no
> signal
Phil,
Unfortunately the answer is rather complicated because there are two
frequency synthesizers involved, not just one. The code that handles
tuning in the firmware is set_freq() here:
https://github.com/mossmann/hackrf/blob/master/firmware/common/tuning.c#L57
To determine the exact
Cliff,
That sounds like a faulty ANT500. Please contact your reseller for a
replacement. Send a private email to me and i...@greatscottgadgets.com
if you run into any problems with that.
The two most common faults of ANT500 and ANT700 are a short between the
center pin and shield ground or a
On Sun, Jun 14, 2020 at 07:42:14PM +0200, Kristoff wrote:
>
> Question:
> Is there a maximum transmission-duration for a hackRF ONE at 2.4 GHz?
No, there is no maximum duration of transmission. I have tested
continuous transmission for more than 24 hours.
Mike
Thank you to everyone who has been a part of hackrf-dev. We at Great
Scott Gadgets appreciate all of the conversations and friendships that
have been forged here. Over the last few years we have not given our
project-specific mailing lists the attention they deserve; instead we
have been
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