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SDR: Difference between revisions
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==Hardware== | ==Hardware== | ||
{|class="wikitable" | |||
|- | |||
! Device !! Tuner !! Bandwidth || Sample Rates || ADC || Freqs || Xmit? | |||
|- | |||
| NooElec NESDR SMArt || R820TR2 || 2.4MHz sustained<br/>3.2MHz peak||225--300kHz<br/>.9--2.56MHz || 8 || 25--1750MHz || No | |||
|- | |||
| NooElec NESDR SMArt XTR || E4000 || 2.4MHz || || 8 || 65--1100MHz<br/>1200--2300MHz || No | |||
|- | |||
| HackRF One || || 20MHz || || 8 || || Yes | |||
|- | |||
| AirSpy || || 10MHz || || 12 || 24--1800MHz || No | |||
|- | |||
| RTL-SDRv3 || R820TR2 || 2.4MHz sustained<br/>3.2MHz peak || || 8 || 25--1750MHz || No | |||
|- | |||
|} | |||
==Software== | ==Software== | ||
Revision as of 04:39, 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.
Hardware
| Device | Tuner | Bandwidth | Sample Rates | ADC | Freqs | Xmit? |
|---|---|---|---|---|---|---|
| NooElec NESDR SMArt | R820TR2 | 2.4MHz sustained 3.2MHz peak |
225--300kHz .9--2.56MHz |
8 | 25--1750MHz | No |
| NooElec NESDR SMArt XTR | E4000 | 2.4MHz | 8 | 65--1100MHz 1200--2300MHz |
No | |
| HackRF One | 20MHz | 8 | Yes | |||
| AirSpy | 10MHz | 12 | 24--1800MHz | No | ||
| RTL-SDRv3 | R820TR2 | 2.4MHz sustained 3.2MHz peak |
8 | 25--1750MHz | No |
