Results from last nights tinkering 🙂
Results from last nights tinkering 🙂
Sorry for the dodgy screen capture I’m working on a better solution for the next video.
sudo apt-get install gqrx-sdr
sudo apt-get install rtl-sdr
How to install SDR# on windows …
You will need …
PC/Laptop (Recommended dual core, 4gb RAM)
(Optional antenna / adapter. *Recommended*)
.NET Framework 4.6
DO NOT PLUG IN THE DONGLE
DO NOT INSTALL ANY SOFTWARE IT CAME WITH
If you have uninstall the software, driver and unplug the dongle.
Goto airspy.com and download the ‘SDR Software Package’
Unzip the files somewhere
Plug in your dongle
Run zadig.exe (as administrator)
Make sure ‘show all devices’ is selected.
In the device drop down select ‘Bulk Interface 0’
Ensure WINUSB is selected in the other drop down.
Click OK to any warnings
Select the RTLUSB dongle
Click the play icon to start capture.
Tune to a known frequency (FM station)
Ensure WFM is selected
Open the options menu
Increase RF gain, but don’t let the signal distort.
If you can hear distortion try adjusting the volume control in SDR#
Give yourself a pat on the back and get scanning!
Moving on to gqrx and linux in the next video.
Recommended SDR shopping list for up coming content …
RTLSDR – RTL2832(u) DVB-T+DAB+FM Dongle (£10-£15)
MCX MALE TO BNC FEMALE (for connecting antennas) (Approx £2)
AIR BAND (or similar) antenna (usually with BNC male connector) (£3-£10)
Kettle is on. Coffee to be made. So day twelve begins.
Tunes turned to 11 … its Friday!
Operation pre-weekend tidy up has begun.
Slow start, written up all the notes for the SDR# tutorial, might have a go at recording it later, need to clear some space in the garage for some new equipment arriving soon.
Just had a little jam on my drums .. its been way too long. Great warm up for some FPS.
Right time to do something productive.
Uploading SDR# tutorial, writing up notes in to a new post.
Really quick video showing you how to install and setup SDR# under windows.
Moving on to linux and gqrx next.
Just doing some RL stuff will be on this evening. SD card for RPi3 has arrived and whiteboard pens. Multimon-ng running on linux logging data. 🙂
Munching food just about to get down to business.
-SDR# notes / audio / video
-POCSAG in PDW
-FLEX in multimon-ng
-Test RPi3 (with retropie of course)
-Check corsair ticket.
-Audio working on RPi3 HDMI
Whoot! looks like corsair have updated the ticket. Awaiting RMA confirmation swapping this brown mx for a new spangly red mx keyboard hopefully. That would be most awesome.
Distracted by the internet again! … also reluctant to stop logging POCSAG messages … but I need the dongle.
Looking at demodulating FLEX using multimon-ng but IDK if I have the latest version compiled. Time for some updates.
RPi3B vs RPiB there is no comparison, first impressions very impressed!
RPi3 still updating & uploading vblog.
Rebuilt and installed latest version of multimon-ng. Now have FLEX messages demodulating whoot!
Audio working on RPi3 Whoot!!! 😀
Ready to record SDR# tutorial tomorrow.
On mumble with luc, hexon and gir.
Signing off for today, its been fun. 🙂
Worth an update thank you gir for offering to send a RPi zero for hakology to have a play with … can’t wait 😀
What is SDR?
S.D.R. stands for Software Defined Radio.
SDR is a combination of hardware and software used to scan/monitor/demodulate/transmit electromagnetic radio signals.
Signals can be used to transmit voice or data.
The most common methods of transmission are FM and AM.
FM = Frequency modulation
AM = Amplitude modulation
FM, modulates the frequency of the carrier wave to transmit a signal.
AM, modulates the amplitude of the carrier wave to transmit a signal.
Both can be used to transmit analogue or digital data.
You will need …
PC / laptop – Laptop preferably for portability, currently running on an i5 2.4ghz 8gb ram pretty smoothly, I did try this on an older atom processor on linux using gqrx but latency was an issue.
SDR dongle – RTL2832U – If you want to follow along with the next few videos grab an RTL dongle you can always decided if you like the hobby enough to invest in more expensive equipment at a later date.
Antenna – You can use the one provided but its not recommended for the next few videos ill be using a cheap airband antenna I bought from ebay.
Realtek DVB-T+DAB+FM Dongle
RTL2832U – Notes: The dongle was never intended to be used for SDR but two researchers discovered the chip used was able to cover a wide range of frequencies (24 mhz – 1766 mhz) and decided to rewrite the drivers. (Antii Palosaari and Eric Fry of Osmocom) Since then the dongle has proved hugely successful with amateur radio enthusiasts.
So what can you do with SDR?
Voice, ADSB, ACARS, digital voice, AIS, POCSAG, FLEX, consumer devices, weather ballon data, HAM internet, DVB-T, GSM, GPS, spectrum analysis, weather satellites, ISS, radio astronomy, meteor scatter, FM/AM radio, RDS, DAB, RNG … probably much more!
Over the last few years lots of researchers and developers have started producing applications and code for the RTLSDR and hopefully many more projects to come as the community grows.
Keep tuned for more SDR fun stuff!
If you get bored in the meantime try googling some of the stuff I’ve listed above and start your own research / project / experiment / learning / hack / etc.
Great sleep, late start, wish I’d stayed awake earlier but must have needed the sleep, feeling refreshed time to get busy. Recorded first audio for SDR EP yesterday, needs work but not bad for first try.
Rewritten dialogue again reads a lot better now. Looking for other SDR projects and ideas. Still yet to see if I have multimon-ng installed on the netbook. Tasks for the afternoon.
Not so random pictures for the day …
Just cooking some food and getting ready to record.
Recorded introduction to SDR episode but still not entirely happy with the take, have some RL boring stuff I need to do but will be back later this evening.
Back, quick wash and shave and time to record the final take. *Fingers crossed.*
Editing done, rendering video.
Time to relax!
So it begins, late night last night, got the SDR working under windows. Todays goals, get the SDR working under linux and gqrx, look at what I managed to capture in the log and start a video showing how to setup SDR#.
Really don’t want to stop logging messages lol, but I suppose its time to start making notes. Once I can get this running on the RPi ill leave it logging 24/7 for a while so I can analyse the data. Still lots of data being sent that shouldn’t be, names, phone numbers, address information, IP addresses, email addresses, URLs … and I’m sure if I log for long enough the obligatory username and password.
So I can’t show or share any of the data I’m collecting. Hibby just pointed me to (Legal stuff) … even though I can’t share the data I can show you how to demodulate the signals yourself.
Written up notes for SDR# installation.
Executing operation tidy up for recording later also doing a few other chores.
Still tidying 🙁 b/c I’m a messy bugger.
Random picture for today …
Since I’m working on radio stuff here’s my baofeng handset its the uv-5r, a great starting handset for people looking to get in to HAM radio and start learning. I bought one relatively cheap on ebay around £20, before I got my licence so I could scan and listen a little. I’ve some other scanners and sets but ill save those for another day.
meh RL … need to script my house work or hack together some sort of roomba capable of washing up and making tea/coffee on demand.
Chilling out time for a coffee and some food. BBL
A few pages of notes written and a rough idea for an introduction to SDR. Time for a brew and to record / talk through the audio. Will report back in a while.
Captured a little extra audio for the hakology introduction too.
Woke up after a few hours sleep been doing a little radio research, too early to start the next blog entry, too late to be editing this one hmmm.
No vblog for day nine either will have to make up for it later.
Good afternoon hakologists. Late start but lots to do.
Posted ebay stuff, bills to pay, boring stuff. Couple of support calls to make. Will be on soon though.
The amount of profit water, gas, and electricity companies make you’d think they’d have more people staffing the phones. Especially when everyone uses mobiles these days. I hate online payment services much prefer top up cards or direct payment. Finally got through and turns out I’m ahead with my payments whoot whoot. Only one more call to make.
Finally done with all the menial stuff. Time to get busy.
Whiteboard pens ordered, need to login to the corsair portal and check progress on that ticket.
Had a friend over for a while played a little doom4 and insurgency. Finally unlocked the BFG on doom, whoot! Hopefully not too far away from completing it on campaign mode.
Reading up on FSK (frequency shift keying) and POCSAG. Managed to get SDR# working with PDW and virtual cable for the first time. Now logging messages and noting frequencies for a tutorial.
Rendering vlog preparing to setup multimon-ng and rtl-fm.