[aprssig] HackRF as SDR for ham use?
Chuck.Gooden at comcast.net
Sun Aug 3 11:32:10 EDT 2014
To capture and decode Wi-Fi traffic, down load a copy of wireshark at
http://www.wireshark.org. There is a link for a 802.11 packet capture
but it is expensive. wireshark is a very good tool that I use at work
and is very full featured. I have never tried it on a wifi connection
but it will probably work, and if it doesn't its free so it wont cost
On 8/2/2014 11:00 PM, Greg D wrote:
> Hi John,
> Non-Ham related question... Professionally, I work in the Wi-Fi area,
> and was also interested in being able to use the HackRF for capturing
> and decoding Wi-Fi traffic, as well as getting a better look at the RF
> environment (spectrum analysis). Can this be done with the available
> (free) software?
> Sounds like a really interesting and fun conference!
> Greg KO6TH
> John Gorkos wrote:
>> I'm at BlackHat right now, and just finished the first day of classes,
>> hands on, with Michael Ossmann and the HackRF. I've barely had any time
>> with it at all. It has extremely low transmit power, and is classified
>> as "test equipment" to avoid all of the FCC legalities for type
>> certification. I can tell you I've gotten 20MHz of bandwidth samples
>> out of it, into a Linux VM on my MacBook pro, and it seems to be pretty
>> slick. Tomorrow will be more hands on with the device, and a LOT of
>> time in GnuRadio. Obviously, based on the fact that we're at BlackHat,
>> most of the concentration is on security and penetration. Things like
>> finding unknown signal types in a very large chunk of spectrum, then
>> locating and identifying those signals.
>> BTW, Michael is a real genius at explaining SDR techniques and the math
>> behind them. At the beginning of the class, he passed out little green
>> plastic slinkys with his company logo on them. Today, about halfway
>> through the afternoon session, he used the slinkys to explain how a sine
>> wave and cosine wave look the same, depending on whether you're looking
>> at them from the imaginary or real number point of view, and that the
>> slinky represents the longitudinal axis of time extending out of the
>> paper, as you plot complex numbers on a two axis system. Freaking
>> brilliant. If you ever get the opportunity to go to one of his
>> classes, you'd be a fool to decline.
>> I'll try to provide more info about the device tomorrow. I'm mentally
>> and physically drained after a day of complex math.
>> John Gorkos
>> On 8/2/14, 6:13 PM, Greg D wrote:
>>> Hi folks,
>>> I see there's a new SDR receiver being built for the "hacker"
>>> community: http://hakshop.myshopify.com/products/hackrf
>>> They claim it's compatible with SDR#, so I wonder how well it will work
>>> for the variety of digital ham radio purposes? It's a little pricy,
>>> claims to cover 10mhz to 6 ghz, so that would cover through our
>>> 5.65-5.925ghz allocation. I don't know what the bandwidth is.
>>> Greg KO6TH
>>> aprssig mailing list
>>> aprssig at tapr.org
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