→ onlywig:要怎樣才能買到呢? 218.160.248.57 04/01 20:25
推 onlywig:我也想買個dungle玩玩看 218.160.248.57 04/01 20:29
※ 編輯: laptop 來自: 211.72.203.66 (04/01 20:37)
※ 編輯: laptop 來自: 220.135.57.127 (04/02 05:19)
http://sdr.osmocom.org/trac/wiki/rtl-sdr
基於對DVB-T 電視棒驅動編寫
http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/44461/focus=44461
OSMOCOM 發現最新便宜價廉軟體無線電硬體
RTL2332U 是一個應用SDR (軟體無線電的晶片) 非寫死調變演算法的 ASIC
RF tuner 為(64MHZ - 1700 MHz). (Maybe work in ~2000MHz)
沒壓縮的基頻取樣 (up to 2.8 MS/s 8-bit I+Q)
丟入電腦Gnu Radio 再做無線訊號處理
只能接受 不過用於RF Sniffer 效果不錯
BUG:取樣因為沒buffer問題 所以好像在硬碟會掉包 SSD或ramdisk 會比較理想
RTL2882U晶片規格
http://www.linuxtv.org/wiki/index.php/RealTek_RTL2832U
Notes
Resolution 8 bits
Minimum sample rate > 900 ksps (must be greater!)
Maximum sample rate 3.2 Msps
Nominal sample rate 1 Msps (much higher and subtle signal degradation)
Clock 28.8 MHz internal oscillator (expect phase noise)
Spectrum flatness (Definitely not flat at centre, worse with low gain)
AGC Disabled for E4000, but still active somewhere (in demod?)
Sensitivity TBD (decent all things considered)
Quality Don't expect anything remotely close to USRP
Price
討論
http://www.reddit.com/r/RTLSDR/
https://groups.google.com/forum/#!forum/sdr-widget
HDSDR
HDSDR 是Windows 下軟體無線電軟體 ,可搭配RTL-SDR做RF頻譜訊號檢測
How to
http://thenewtech.tv/community/dongular-deviation
我們公司認識工廠 因此是給我們NT 400成本價...
(還帶天線跟搖控器...XD)
我已實作HDSDR 做頻譜觀察
正在改裝收聽測試 ACARS 訊號
搭配GNURadio
其他各種Wireless sniffer 也頗方便...
Like GSM ,Dect and more...