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SDR: Difference between revisions
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[[File:SDRsoftware.png|right|thumb|The SDR software stack, at least according to PothosWare (authors of SoapySDR)]] | |||
Software-defined radio moves the majority of radio processing into software, facilitating relatively inexpensive wide-band hardware interfaces to the electromagnetic spectrum, especially those frequencies below 3GHz. Pairing advanced SDRs with software-defined antennas yields dynamically optimal [https://en.wikipedia.org/wiki/Cognitive_radio cognitive radio]. Perhaps most famously, [https://www.rtl-sdr.com/about-rtl-sdr/ DVB-T television tuners] built around the RTL2832U chip, and available in USB form factor for less than $30 (particularly the Rafael Micro R820T2), can reliably provide 2MHz of RX bandwidth anywhere from ~30MHz to ~2GHz (still lower frequencies are supported via direct sampling). For $500, [[BladeRF|powerful units]] capable of tremendous bandwidth and range (as well as transmission capabilities) are available, and from there it's not that great a leap to building your own [https://en.wikipedia.org/wiki/Stingray_phone_tracker stingray]--if the cops have 'em, so should you, doyouknowhatiamsayin? | Software-defined radio moves the majority of radio processing into software, facilitating relatively inexpensive wide-band hardware interfaces to the electromagnetic spectrum, especially those frequencies below 3GHz. Pairing advanced SDRs with software-defined antennas yields dynamically optimal [https://en.wikipedia.org/wiki/Cognitive_radio cognitive radio]. Perhaps most famously, [https://www.rtl-sdr.com/about-rtl-sdr/ DVB-T television tuners] built around the RTL2832U chip, and available in USB form factor for less than $30 (particularly the Rafael Micro R820T2), can reliably provide 2MHz of RX bandwidth anywhere from ~30MHz to ~2GHz (still lower frequencies are supported via direct sampling). For $500, [[BladeRF|powerful units]] capable of tremendous bandwidth and range (as well as transmission capabilities) are available, and from there it's not that great a leap to building your own [https://en.wikipedia.org/wiki/Stingray_phone_tracker stingray]--if the cops have 'em, so should you, doyouknowhatiamsayin? | ||
Revision as of 16:33, 6 July 2019
Software-defined radio moves the majority of radio processing into software, facilitating relatively inexpensive wide-band hardware interfaces to the electromagnetic spectrum, especially those frequencies below 3GHz. Pairing advanced SDRs with software-defined antennas yields dynamically optimal cognitive radio. Perhaps most famously, DVB-T television tuners built around the RTL2832U chip, and available in USB form factor for less than $30 (particularly the Rafael Micro R820T2), can reliably provide 2MHz of RX bandwidth anywhere from ~30MHz to ~2GHz (still lower frequencies are supported via direct sampling). For $500, powerful units capable of tremendous bandwidth and range (as well as transmission capabilities) are available, and from there it's not that great a leap to building your own stingray--if the cops have 'em, so should you, doyouknowhatiamsayin?
On the more ballin' end of things, a tricked-out Per Vices Cyan will run you $290k before shipping.
Hardware
| Device | Tuner | BW (MHz) | Samples (Msps) | ADC | Tune (MHz) | Xmit? | FPGA? |
|---|---|---|---|---|---|---|---|
| RTL-SDRv3 | R820TR2 | 2.4 sustained 3.2 peak |
8 | 25--1750 | No | No | |
| NooElec NESDR SMArt |
R820TR2 | 2.4 sustained 3.2 peak |
225--300kHz .9--2.56MHz |
8 | 25--1750 | No | No |
| NooElec NESDR SMArt XTR |
E4000 | 2.4 | 8 | 65--1100 1200--2300 |
No | No | |
| SDRPlay RSP2 | 10 | 12 | DC--2000 | No | No | ||
| SDRPlay RSP1A | 6 | 14 | DC--2000 | No | No | ||
| HackRF One | RFFC5072 | 20 | 2--20 | 8 | 1--6000 | Half | No |
| AirSpy R2 | R820TR2 | 10 | 2.5--10 | 12 | 24--1800 | No | No |
| AirSpy Mini | R820TR2 | 12 | 6 | 12 | 24--1750 | No | No |
| AirSpy HF+ | 0.768 | 16 | DC--31 60--260 |
No | No | ||
| BladeRF 2.0 micro | AD9361 | 56 | 61.44 | 12 | 47--6000 | 2x | Cyclone V |
| BladeRF x40/x115 | LMS6002D | 28 | 40 | 12 | 300--3800 | 1x | Cyclone IV |
| Ettus B210 USRP | AD9361 | 56 | 61.44 | 12 | 70--6000 | 2x | Spartan 6 XC6SLX150 |
| Ettus B200 USRP | AD9361 | 56 | 61.44 | 12 | 70--6000 | 1x | Spartan 6 XC6SLX150 |
| Per Vices Noctar | 250 | 125 | 12 / 16 | DC--4000 | 1x | Cyclone IV |
