Software Defined Radio the Snubsie way! Shannon discovers how much fun a radio dongle and open source software can be. Plus, Darren meets with J0hnny Lon…
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Download it here: http://spench.net/r/USRP_Interfaces Also: Source block for GNU Radio: http://wiki.spench.net/wiki/gr-baz#rtl_source_c http://twitter.com/sp…
Look gonna try this can u tune to p25
Any USB device using the Realtek RTL2832U demodulator chip, AND a
compatible tuner (at the moment E4000, FC0013, FC0012, FC2580) should work.
FUNcubes are good (they have an E4000) but the maximum bandwidth is only 96
kHz (compared to 3.2 MHz on the RTL dongles). The upside is that because
the FCD contains an audio codec as the demod, it appears as a soundcard on
your computer (i.e. no drivers required). To be more precise, it’s a
composite USB device, the other sub-device is an HID device…
Hi thanks for putting me right about the usb stick, i have now got the Hama
nano from Amazon, i have it up and running in HDSDR and although all seems
to be running, all i am getting is white noise, not even any local
broadcast stations, in the “Hint” i am putting RTL, not sure if i have to
tell it what Tuner to use.
where did u get this for $20 i must know
This sounds great! Have you posted the project/results online? I’d love to
take a look.
Hi Balint, A post to the Open HPSDR email reflector brought me to your
site. Very nice work! Are you a ham? … Jim AF9A
Ihave a Newsky dongle. No matter what frequency I tune to there’s a peak in
the centre of the spectrum. Any ideas what’s causing this?
I ordered my a week ago from Deals Extreme and can’t wait to get it. I
wasn’t expecting a windows port so soon so this will be great when I work
AMSATs!
We manage to watch HAM radio DVB-T transmission (with VLC player 🙂 on 435
mhz but only with the bandwith of 6, 7 and 8 MHz. Editing the VLC options
we try to watch the 2 MHz signal with 2 MHz bandwith, but without sucess.
Any hint? Does anybody know any dvb-t sw where we can setup 2 MHz bandwith?
(Modulation 16QAM) Thanks
I meant kool
I have a USB-Dikom DVBT HD I deleted the contents of the ROM 24C02. Before
windows detect VID-PID 1b80: d394. While now 0BDA: 2832. Could you help me
telling me what are the first 16 bytes of EEPROM? Thank you. P. S.
balint256 you may write a ExtIO_RTL.dll for Winrad? Ciao.
I must be going daft can you link what s/ware I need to download please. De
G8VHI correct on qrz.com too!
Yes, the tuners will let you receive 70cm. You should consider using a
bandpass filter, and perhaps a preamp, if you’re after weak signals (the
device has a lower dynamic range since it only produces 8-bit samples).
The tuner range tops out on most of them between 1.4 and 1.7Ghz. At the
bottom most are in the 50Mhz range (although I just bought one with a new
chipset that goes down to 25ish Mhz). DirecTV’s LNB is downconverting to
2Mhz to 2145Mhz. The dish itself is a 5Ghz dish. So if there’s something in
5ghz that will downconvert into the middle of the LNB’s range – maybe. But
what do you want to listen to up there? It’s a very tight beam so you’d
need to motorize the dish. [cont]
Gday mate, i got a RTL2832 DVB-T USB stick, plugged it into my mac osx
(lion) and like you said my mac can’t detect the device. I downloaded wine
? I can’t find the plugin you are talking about ?? Please help me.. Im lost
like usual..
Already history.
Hi there i have just ordered Ezcap.TV, but i have clicked on the box and it
shows different than yours, i have included the link, (youtube stopped the
link) but it was Amazon.co.uk. its first box on there. Please look and tell
me if its the same, or any other on that page that will work.
Have you been able to listen to any sounds from space etc? Would this work
well plugged into an old DirectTV dish?
Which website?! I (hope) don’t think you’re talking about mine because no
one else has reported a problem…
Yes I’ve ported it to Windows as an ExtIO plugin for HDSDR/Winrad/WRplus,
and to GNU Radio (appears as a block in GNU Radio Companion). I have also
released the cross-platform source code for ‘librtl2832++’ (it’s in
gr-baz), which is a C++ (OO) interface that abstracts control of the
hardware/tuners. You can rip it out and use it for anything else if you
wish – e.g. enabling use of the hardware in other Windows/Linux apps!
Also, why does the centre of the displayed spectrum always have a strong
apparent signal? What causes that?
This is a usability issue I will resolve in the next big release: separate
plugins for each hardware device, instead of having them all contained
within the one. (It was only originally supposed to be for the USRP, as you
may have noticed!)
Hi, I’ve downloaded all the software and followed the procedure given, I
have the correct dongle 2832/e4000. A daft question maybe, using HDSDR
software there does not seem to be any signals present. The computer
recognises the dongle after using rtlreadlen=8192 tuner=e4k etc, what
method do you use to tune the dongle. Using the keyboard of the PC the
software seems to crash. balint 256 can I contact you via an email link
please, then I can send you some screen grabs.
Hi, i bought IT9135.. and i dont found RTL2832 on board. so this will not
work on this tuner?
Playlist link:
$20 ultra-cheap Software Defined Radio with RTL2832 DVB-T USB stick
Hey Shannon. The data traffic you hear on 160 Mhz is called POCSAG and can
be decoded using Stereomix. You can find decoders online for free. :)
iv had 1 of these for a while it can find bugs (wireless taps) anything
that transmits including cb radio etc its quite good shame it dont work on
linuxthough very disapointed in that part of it
I’ve had several of those cheap tv tuners die on me and just start getting
hot.l when using for sdr. Never worked again for dvb-t either.
Ooh I got to get me one of those dongles.
MOAR BAANTARRR!!
try out HDSDR, if you find a station broadcasting morse code, you can set
it to cw and the program will print out what is being said
The hackers for charity site it’s not working. Or at least not for me.
Whenever I try to enter the site it sends me to google
reference links: radioreference – com, eham – net, 26.480 – 26.950 in USA
is Government and unlikely to be FM. Is there a shortwave station @26.82?
Could be the software is unable to receive the low frequencies and instead
picking up the 4th harmonic 107.3 or it could be a FM receiver’s mixing
frequency. Doubt the SDR can go that low in frequency
Would that dongle pick up the hydrogen band? If it does I can see a
satellite dish being repurposed as a radio telescope…
S.E.T.I can you search for ET like me.
This is pretty amazing what you can find on the internet by browsing by
chance and finding out cool stuff, I enjoyed your 2nd episiode of coding
101 and this current episode of hak5 podcast, really awesome and
informative :), Keep up the Cool Jazz !!! Two Thumbs Up :)
#SDR
The 1st data is POSAG Pager use program call PWD pager to decode
Is it possible to go to 2.4Ghz or 5Ghz to listen to ones and zeros?
totally excited about plying around with SDR XD
I just got mine in the mail and have been playing with it for a while.
AWESOME! I need to get away from my computer/desk because it gets a fair
amount of interference…Thanks!
Here’s something else I found for anyone who wants to hook in to a
“standard” coax antenna. It’s an “F” to “Coax” cable that’ll fit the dongle
and let you hook up to your outdoor coax antenna or even a set of “Rabbit
Ears” inside if you want to do that.
[ulr]
http://www.amazon.com/coaxial-coax-cable-assembly-female/dp/B00CTJN480/ref=pd_luc_sim_01_04_t_lh?ie=UTF8&psc=1%5B/url%5D
Price isn’t too bad but wow, 17 to 24 days for shipping. Guess I need to
learn to be patient. LOL.
HI – thank you this looks like fun. Got a couple of questions please.
Whats the frequancy range that ive got to look for in a fm dongle? widest
possable?
Also… what programs can you use to decode any interesting digital signals
you may find?
… thanks you two, love your shows… and the goofy stuff, makes me happy
26.8 is just below the Citizens Band (CB). The music was probably a CBer
operating illegally. The signal would have most likely been AM. If I am not
mistaken FCC rules prohibit FM below 29 MHz. I do know that the 10 meter
band (28-30 mhz) is the only amateur radio band you can do FM on in the
US. As for Narrow FM, it’s used on the 2 meter (144-148 mhz) amateur radio
band. Shannon, since you are in SF, try listening on 147.045. It’s an
amateur radio repeater up on sunol ridge that gets bay area wide coverage.
It’s call sign is W6SRR. That’s one of the repeaters I use, so you might
get to hear me on it :P
Darren – hi, can you give several options for dongles in your shop please
About the banter. Seriously guys. Come on! You are bantering way to little!
its a pager freq and sounds like pocsag data
When you an SDR dognal, get the adapter cable so you use a different
antenna. The included antenna SUCKS!. I have used the dongle with an Ed
Fong outdoor 2m/70cm ham radio antenna and it worked MUCH better than the
stock antenna. A discone antenna wouldbe even better. Even just a long wire
out the window would work better.
OMG, I loved this episode! Shannon, please do moar radioz, plz!
I had a lot of fun with last week’s episode. More to come this week on SDR!