Here’s that tuner: http://amzn.to/101Yf1z (this has the RTL2832U chipset) Here’s the gqrx, the software I was using: http://www.oz9aec.net/index.php/gnu-…
Video Rating: 5 / 5
This is a tour through using SDR to receive HF: http://wiki.spench.net/wiki/RF http://spench.net @spenchdotnet http://twitter.com/spenchdotnet HF with ultra-…
I’ve had a few locks but since it’s all encrypted, it’s pretty useless.
Sorry, I’m writing this as I watch – I see you’ve mentioned CODAR. I’ve
also seen sweepers with discontinuities as well – and sweepers which isn’t
very linear either towards the higher bands usually sweeping downward. Very
nice constellation plot on that Stanag signal – and now I see you used
Sigmira too. Great video! Really enjoyed watching this 😀 Been a bit busy
myself, but unfortunately not with radio …
any chance you think the diagonal signals are a frequency hopping radio?
Sounds like Chase from House
boom, exactly the resource I was looking for. Cheers for that, and let the
experimenting begin!
Could you do a tutorial on decoding the different signals to get the
data/voice in them?
The slow rate sweeper at 11:25 in the video is a sounder, it might be
associated with JORN. If you pay close attention after it leaves one freq
it steps up or down (one direction or the other, a given one always travels
in one direction only) 1 to 2 MHz and sounds again. And then another 1 or 2
MHz and again, etc. The steps are not always even 1 or 2 MHz steps, but are
often close to that size.
Yes, you certainly can! Please have a look at my latest video: “Ultra-cheap
SDR: HF with RTL2832 and transverter” (link in video description).
Whistlers – I tend to get them around here, and it’s almost certainly
man-made. Ionosondes maybe, someone suggested that I reference the time it
crosses WWV/WWVH’s 10Mhz signal and I will find that they are supposedly
very regular! 1:43 – that’s HFDL aka HF-ACARS used by long haul aircraft.
The single “alignment” tone before the data burst is a giveaway – you’re
tuned a bit too low so it might not have been that easy to spot by ear. The
fact they’re clustered is because they are in the aviation
Great, thanks! Otherwise a bittorrent link on your web site would be fine
for me, I’m happy to seed it for a while.
the sweeps are chirp transponders they go from 4hz up to 30mhz they show on
a display the f1 f2 f3 layers for good propergation for tx rx ccts
I haven’t used Excalibur/Perseus myself, but I imagine they’re both pretty
good. First place would be to check their specs on sensitivity, etc. Then
read about what other users have reported regarding performance. That said,
the USRP is in a class of its own because (as you say) it’s just so
flexible. Apart from the transverter+WBX, you could also build your own
pre-amp (e.g. using the one in the Genesis radio kit), and use it in front
of the LFRX – I think that could work really well too!
Thanks for your lovely comment!
Could some of the sweepers be FCMW radar? It’s in a lot of marine radar
now.
Fascinating, and full of helpful information! I really do like the
combination of GNU Radio and RFMap. 73 Nils, DK8OK
If you haven’t seen this video check it out. This is exactly why I love
radio communications:
HF and Software Defined Radio: HDSDR + USRP + GNU Radio + RFMap
Check out this video of HDSDR + USRP + GNU Radio + RFMAP:
HF and Software Defined Radio: HDSDR + USRP + GNU Radio + RFMap
The video is really well done, and Balint does a great job of explaining
things as he goes along. Even if you are familiar with USRPs and GNU Radio,
this is a really neat example of looking through the HF band and checking
out signals!
Saw this was posted mid-March. It looks pretty interesting. 🙂
HF and Software Defined Radio: HDSDR + USRP + GNU Radio + RFMap
Some of the very neat things you’ll find with software defined radio
Signals intelligence. Did you know there’s military radar just broadcasting
high energy RF?
HF and Software Defined Radio:HDSDR+USRP+GNURadio+RFMap – YouTube
http://goo.gl/tVtKh Software-Defined Radio For $11 http://goo.gl/BW8s0
This looks amazing
How do you record “raw airwaves” like this? Wouldn’t it create really big
files because you need such a high sampling rate to capture a decent sized
frequency range?
Very nice and well produced informative video! Thanks for having taken the
time to share it.
Terrific job! I’ll rerun to study this again.
W9ZSJ
Woow!! That is so cool 🙂
what software are you using and will it work windows 7 I have the dongle
and stuff
What kind of antenna should be used?
Just the antenna that comes with the unit.
hey I have a pc also did you get the software to work I have windows 7
please help
Using RTL2832 = 25MHz-1700MHz
Is there a tutorial for installing/using gqrx with the same tuner as you?
I’m new to linux and I can’t manage to use gqrx like you do 🙁
The only thing I get here in Sweden are radio stations. We are pretty
boring over here, I was up all night scanning the whole spectrum manually.
Which frequencies can you receive?
I’d guess the chipset is pretty universal and used in many DVB-T receivers
so you could look out for one on eBay or Amazon
Awesome! 🙂
From amazon it looks like 25-1700 MHz. I wonder how wide band you can
monitor? Is it just a few hz either side of your center freq or are you
able to monitor all at once?
I’m not quite sure if this is possible here in Germany. Anyway I saw that
you wear your basecap oldschool style, like me.
Keep the daily uploading up :)! very interested!
google SDRSharp
We are using an SDR at Mach 30 to build a low cost spacecraft
communications receiver. It is open source hardware, hosted on Open Design
Engine. Look for the gs-001 project.
Do you mean “possible” in the sense of permission or in the sense of
technically possible?
Just bought one :::)
That’s super cool and interesting. I’m so going to try this.
Can we find it in France (or Europe in general) ?
what driver for the mac
What type of antenna are you using? I just got a dongle with the RTL2832U
and R820T chipset. I receive the FM commercial band very well. But can’t
seem to tune much else in yet. I’m assuming it is the little antenna that
came with the dongle. I think this will be a lot of fun once i get
everything set up.
Thanks for posting the links to the software.
This is so cool!
SDR is fun!