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GNU Radio Tools for Radio Wrangling and Spectrum Domination [video]
- gravypod 11y agoGood talk, sadly he does not go over any of the hardware side. I've been looking for a cheap way to get into SDR.
- rsync 11y agohttp://www.rtl-sdr.com/ http://www.rtl-sdr.com/ Specifically, the upgraded/tuned rtl: http://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/ http://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/ It's $24.
- gravypod 11y agoI have my technician license, I'd like to transmit.
- rsync 11y agohackrf is reasonably priced, yes ? Very good support in GNU Radio.
- concernedctzn 11y agoThe BladeRF is full duplex for just a little more than the hackrf, definitely a viable option for enthusiasts.
- madengr 11y agoYes, but the blade RF only goes down to 400 MHz, so will not cover the 2M ham band.
- toomuchtodo 11y agohttps://greatscottgadgets.com/hackrf/ https://greatscottgadgets.com/hackrf/
- finnn 11y ago$24? Maybe if it's fulfilled by Amazon Prime or whatever and including same-hour shipping. If you're willing to wait for shipping, the exact same shit is like 1/3 the price from China (eg [0]) [0]: http://www.aliexpress.com/wholesale?SearchText=RTL2832U http://www.aliexpress.com/wholesale?SearchText=RTL2832U
- rhinoceraptor 11y agoThat antenna looks like it's a lot better than the normal one. The normal one is essentially useless for most purposes, and you have to get a $10 MCX adapter to plug it in to a real antenna.
- meatmanek 11y agoThe upgraded clock would be really nice; I have a standard RTL-SDR without that, and the clock can drift a lot with temperature: it'll start up a few dozen PPM off, and shift another few dozen when it warms up. Depending on frequency, that ends up being many kilohertz, which is really annoying if you're shifting/filtering/downsampling, as your target signal can drift outside of your filter window. A constant ppm error is easy to compensate for; less so when it changes.
- th0ma5 11y agoLove the RTL-SDRs and the HackRF ... my first SDR was called the Zeta SDR ... it is a DIY direct conversion receiver with less than 10 parts or so, and you plug it into a soundcard. The schematics are available online, and I think I put it together with all brand new stuff for less than $30. It is only a single band, however you can add a digital synth like the Si5351A and if you can handle the hash and spurs the thing supports a range from below 1mhz to almost 10mhz. If you have a 16 bit or 24 bit soundcard, then the dynamic range is superb. If it is 192khz or so then you can see that / 2 as the range... Anyway... this was a while ago, and it was very satisfying to put together a simple circuit and get going. I used Quisk and various other things, but I'm sure GNU Radio would work.
- gravypod 11y agoThe Zeta SDR sounds more in my price range! A great idea. Someone should be able to rig it to a USB interface, Is there a website with a lot of open source radio designs?
- jjoonathan 11y agoNot to be rude, I have no way of judging your skill level, but are you sure you understand the implications of 20-100khz bandwidth and a tuning range of 1-10mhz? Here is the table at top with the zeta included. I'd _strongly_ recommend going with the rtl-sdr over the zeta as a first radio. Source Device Price Max. Bandwidth Resolution Name EUR GHz MHz bit 0 zeta-sdr 30 .01 .002 16 1 rtl-sdr 25 2 3 8 2 rad1o 200 4 20 8 3 hackrf 400 6 20 8 4 bladeRF 400 4 28 12 5 usrp 700 6 60 12/14 6 warp 7000 5 170 14
- th0ma5 11y agoYes I'd go along with this. You're going to have a plug & play experience more so with the RTL... I guess my interest at the time was transatlantic weak digital signals on HF ham bands. With the RTL-SDR you'll be able to "see" all your favorite radio stations, listen to or track airplanes, and all kinds o things. With an upconverter (~$40) you'll get into HF a bit as well.
- weinzierl 11y agoHere is a quick comparison table I made for myself just yesterday. The purpose was to get an overview what is currently possible for what money. It most probably has errors but the sources are mentioned, so you can check for yourself. It's just the devices I stumbled upon, there are probably others. Source Device Price Max. Bandwidth Resolution Name EUR GHz MHz bit 1 rtl-sdr 20 2 2 8 2 rad1o 200 4 20 8 3 hackrf 400 6 20 8 4 bladeRF 400 4 28 12 5 usrp 700 6 60 12/14 6 warp 7000 5 170 14 1 http://sdr.osmocom.org/trac/wiki/rtl-sdr http://sdr.osmocom.org/trac/wiki/rtl-sdr 2 https://rad1o.badge.events.ccc.de/ https://rad1o.badge.events.ccc.de/ 3 http://greatscottgadgets.com/hackrf/ http://greatscottgadgets.com/hackrf/ 4 http://www.nuand.com/ http://www.nuand.com/ 5 http://www.ettus.com/ http://www.ettus.com/ 6 http://warpproject.org/trac/wiki/about http://warpproject.org/trac/wiki/about Other sources I used: http://www.eetutorial.net/sdr-showdown-hackrf-vs-bladerf-vs-usrp/ http://www.eetutorial.net/sdr-showdown-hackrf-vs-bladerf-vs-... https://media.ccc.de/v/32c3-7153-rad1o https://media.ccc.de/v/32c3-7153-rad1o https://media.ccc.de/v/32c3-7119-building_and_breaking_wireless_security https://media.ccc.de/v/32c3-7119-building_and_breaking_wirel... EDIT: The videos just mention devices and that's where I got the ideas for what people are actually using. They don't contain any device comparisons or anything like that.
- vhold 11y agoI believe another key difference between rtl-sdr and the rest is that rtl-sdr cannot transmit?
- weinzierl 11y agoYes that's right and important information. The rad1o and the HackRF are Half-Duplex all the others are Full-Duplex (IIRC).
- gravypod 11y agoMy issue is that I am allowed to transmit, and being unable to nullifies half the fun. Are there any cheap alternatives to use that can transmit?
- alvern 11y agothank you for sharing this