Search found 16 matches

by VK2FUNK
Sun Apr 01, 2012 11:01 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

Where do ya get other sinks, sources etc from? And how do I get to see them, once I have them, in Radio Companion? A good place to look around is CGRAN: http://www.cgran.org It's also a good idea to search the GNU Radio Discussion mailing list: http://www.gnu.org/software/gnuradio/mailinglists.html...
by VK2FUNK
Sun Apr 01, 2012 10:46 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

Your video made it to the Slashdot front page, nice one! Thank you! Although I think perhaps they may have meant to put up either of the follow two (instead of the one they did, which doesn't specifically deal with the cheap SDR dongle): http://www.youtube.com/watch?v=Z0hEquzLsWU (Windows) http://w...
by VK2FUNK
Sat Mar 31, 2012 7:03 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

@ VK2DAG: Lots of connections :) So you have your USRP (or FunCube or RTL2832U/DVB or..) plugged into a windoze box running HDSDR with the "EXT IO" running BorIP so that your Linux box running GNU-Radio can access the data (audio?) from HDSDR. Is this right? Yes, this is correct. GNU Radio can get t...
by VK2FUNK
Mon Mar 26, 2012 9:31 am
Forum: General Discussion
Topic: Software Defined Radio Direction Finding
Replies: 0
Views: 222

Software Defined Radio Direction Finding

Hello once again, For those of you interested in Radio Direction Finding, I thought I would share my recent presentation on the subject: [youtube=http://www.youtube.com/watch?v=NSC4Y8yA-jY][/youtube] where I talk about DF in general, and my homebrew (auto-)mobile SDRDF system using the open source U...
by VK2FUNK
Sat Mar 24, 2012 9:12 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

Thanks for the analysis! Righto - the first sweeper at 04:04 you mention was the one I referred to.

Very interesting to hear the variable WRF is known as 'agile mode'! Pretty amazing you can see such slow-moving vehicles too.
by VK2FUNK
Fri Mar 23, 2012 11:59 am
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

@ Peter VK5PJ: No worries at all! If/when you do, would be great to discuss again...
by VK2FUNK
Thu Mar 22, 2012 3:26 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

So as per usual there will be one really important step missing so I can spend a few days pulling out my hair Hopefully this won't happen! GNU Radio is a hugely popular project and so is refined on a regular basis (plenty of docs too as you've found). Installation takes some time, but is straight f...
by VK2FUNK
Thu Mar 22, 2012 3:13 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

a wave form that you could not identify some where around 6 to 7 MHz Thanks for that Peter! Just to clarify, you're talking about the weak sweeper I mention in the first recording (LO = 7.023MHz) and it's just on the right of the HAM band (with plenty of AM broadcast on the right), so it sweeps bet...
by VK2FUNK
Thu Mar 22, 2012 12:32 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

Wow! How was that for a burst of techno babble bullcrap??? That was fantastic!!! Really happy to see you getting into it there. GNU Radio is the way to go. Only try setting up on Windows with MinGW-x86 (I've done this - some difficult-to-follow notes here: http://wiki.spench.net/wiki/GNU_Radio_MinG...
by VK2FUNK
Thu Mar 22, 2012 10:17 am
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

@VK4APN: Thanks Paul - glad you found it informative!
by VK2FUNK
Thu Mar 22, 2012 10:15 am
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

Is that the sample rate it uses when viewing 1MHz on the waterfall? With IQ sampling you can get a "waterfall bandwidth" almost equal to the sample rate, what's stopping the SDR software from having a 16Mhz wide waterfall? The full bandwidth (including the waterfall) of the digitised signal will eq...
by VK2FUNK
Wed Mar 21, 2012 11:30 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

can you describe also your "Ettus Resarch" receiver? I have the USRP 1 with WBX daughterboard (50 MHz - 2.2 GHz), which does 16-bit I/Q at 8 MSps, or 8-bit at 16 MSps, over USB 2. It can be found here: https://www.ettus.com/product/category/USRP_Bus_Series If you're thinking about getting one, it's...
by VK2FUNK
Wed Mar 21, 2012 10:53 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Re: Video intro to receiving HF with Software Defined Radio

VK2GOM wrote:Pine Gap are looking for people like you! How do you like Alice Springs? :D
Thank you for checking it out!

I would certainly be amenable to applying such skills there ;) Not sure whether I ought to wait for an invitiation though... :?:
by VK2FUNK
Wed Mar 21, 2012 4:02 pm
Forum: Satellites & Balloons
Topic: Blind signal analysis of satellite transmissions
Replies: 0
Views: 578

Blind signal analysis of satellite transmissions

Hi folks, I gave a presentation entitled "Hacking the Wireless World with Software Defined Radio" at Ruxcon 2011. Part of this covers how one can analyse and demodulate various signals (e.g. those from a satellite) without precise a priori knowledge of modulation/coding parameters. I used a USRP and...
by VK2FUNK
Wed Mar 21, 2012 3:53 pm
Forum: Software Defined Radio
Topic: Video intro to receiving HF with Software Defined Radio
Replies: 24
Views: 2549

Video intro to receiving HF with Software Defined Radio

Hi folks, I'd like to share this video I recently put together that demonstrates how one can use Software Defined Radio to receive HF. I analyse a number of interesting/unusual signals (e.g. STANAG, DRM, OTH RADAR) by putting them through various pieces of software (e.g. HDSDR, GNU Radio, Sigmira). ...
by VK2FUNK
Fri Aug 06, 2010 11:08 am
Forum: General Discussion
Topic: Australian Geographical Radio Frequency Map
Replies: 17
Views: 2053

Re: Australian Geographical Radio Frequency Map

Hi folks, Thank you for checking out my site and posting your comments! I'm still working on it (most recently, as you may have noticed, our HAM registrations). If you have any specific suggestions/bug-reports/etc, then please don't hesitate to describe them here so I can attend to any outstanding i...